Preconfigured SoPlex LP-solver. More...

#include <soplex.h>

Classes
struct	RowViolation

struct	RowViolationCompare

class	Settings
	class of parameter settings More...

class	Statistics

Public Member Functions

	SoPlex ()
	default constructor More...

SoPlex &	operator= (const SoPlex &rhs)
	assignment operator More...

	SoPlex (const SoPlex &rhs)
	copy constructor More...

virtual	~SoPlex ()
	destructor More...


int	numRowsReal () const
	returns number of rows More...

int	numColsReal () const
	returns number of columns More...

int	numNonzerosReal () const
	returns number of nonzeros More...

Real	minAbsNonzeroReal () const
	returns smallest non-zero element in absolute value More...

Real	maxAbsNonzeroReal () const
	returns biggest non-zero element in absolute value More...

Real	coefReal (int row, int col) const
	returns (unscaled) coefficient More...

const SVectorReal &	rowVectorRealInternal (int i) const
	returns vector of row `i`, ignoring scaling More...

void	getRowVectorReal (int i, DSVectorReal &row) const
	gets vector of row `i` More...

const VectorReal &	rhsRealInternal () const
	returns right-hand side vector, ignoring scaling More...

void	getRhsReal (DVectorReal &rhs) const
	gets right-hand side vector More...

Real	rhsReal (int i) const
	returns right-hand side of row `i` More...

const VectorReal &	lhsRealInternal () const
	returns left-hand side vector, ignoring scaling More...

void	getLhsReal (DVectorReal &lhs) const
	gets left-hand side vector More...

Real	lhsReal (int i) const
	returns left-hand side of row `i` More...

LPRowReal::Type	rowTypeReal (int i) const
	returns inequality type of row `i` More...

const SVectorReal &	colVectorRealInternal (int i) const
	returns vector of col `i`, ignoring scaling More...

void	getColVectorReal (int i, DSVectorReal &col) const
	gets vector of col `i` More...

const VectorReal &	upperRealInternal () const
	returns upper bound vector More...

Real	upperReal (int i) const
	returns upper bound of column `i` More...

void	getUpperReal (DVectorReal &upper) const
	gets upper bound vector More...

const VectorReal &	lowerRealInternal () const
	returns lower bound vector More...

Real	lowerReal (int i) const
	returns lower bound of column `i` More...

void	getLowerReal (DVectorReal &lower) const
	gets lower bound vector More...

void	getObjReal (VectorReal &obj) const
	gets objective function vector More...

Real	objReal (int i) const
	returns objective value of column `i` More...

const VectorReal &	maxObjRealInternal () const
	returns objective function vector after transformation to a maximization problem; since this is how it is stored internally, this is generally faster More...

Real	maxObjReal (int i) const
	returns objective value of column `i` after transformation to a maximization problem; since this is how it is stored internally, this is generally faster More...

void	getNdualNorms (int &nnormsRow, int &nnormsCol) const
	gets number of available dual norms More...

bool	getDualNorms (int &nnormsRow, int &nnormsCol, Real *norms) const
	gets steepest edge norms and returns false if they are not available More...

bool	setDualNorms (int nnormsRow, int nnormsCol, Real *norms)
	sets steepest edge norms and returns false if that's not possible More...

void	setIntegralityInformation (int ncols, int *intInfo)
	pass integrality information about the variables to the solver More...


int	numRowsRational () const
	returns number of rows More...

int	numColsRational () const
	returns number of columns More...

int	numNonzerosRational () const
	returns number of nonzeros More...

Rational	minAbsNonzeroRational () const
	returns smallest non-zero element in absolute value More...

Rational	maxAbsNonzeroRational () const
	returns biggest non-zero element in absolute value More...

void	getRowRational (int i, LPRowRational &lprow) const
	gets row `i` More...

void	getRowsRational (int start, int end, LPRowSetRational &lprowset) const
	gets rows `start`, ..., `end`. More...

const SVectorRational &	rowVectorRational (int i) const
	returns vector of row `i` More...

const VectorRational &	rhsRational () const
	returns right-hand side vector More...

const Rational &	rhsRational (int i) const
	returns right-hand side of row `i` More...

const VectorRational &	lhsRational () const
	returns left-hand side vector More...

const Rational &	lhsRational (int i) const
	returns left-hand side of row `i` More...

LPRowRational::Type	rowTypeRational (int i) const
	returns inequality type of row `i` More...

void	getColRational (int i, LPColRational &lpcol) const
	gets column `i` More...

void	getColsRational (int start, int end, LPColSetRational &lpcolset) const
	gets columns `start`, ..., `end` More...

const SVectorRational &	colVectorRational (int i) const
	returns vector of column `i` More...

const VectorRational &	upperRational () const
	returns upper bound vector More...

const Rational &	upperRational (int i) const
	returns upper bound of column `i` More...

const VectorRational &	lowerRational () const
	returns lower bound vector More...

const Rational &	lowerRational (int i) const
	returns lower bound of column `i` More...

void	getObjRational (VectorRational &obj) const
	gets objective function vector More...

void	getObjRational (int i, Rational &obj) const
	gets objective value of column `i` More...

Rational	objRational (int i) const
	returns objective value of column `i` More...

const VectorRational &	maxObjRational () const
	returns objective function vector after transformation to a maximization problem; since this is how it is stored internally, this is generally faster More...

const Rational &	maxObjRational (int i) const
	returns objective value of column `i` after transformation to a maximization problem; since this is how it is stored internally, this is generally faster More...


void	addRowReal (const LPRowReal &lprow)
	adds a single row More...

void	addRowsReal (const LPRowSetReal &lprowset)
	adds multiple rows More...

void	addColReal (const LPCol &lpcol)
	adds a single column More...

void	addColsReal (const LPColSetReal &lpcolset)
	adds multiple columns More...

void	changeRowReal (int i, const LPRowReal &lprow)
	replaces row `i` with `lprow` More...

void	changeLhsReal (const VectorReal &lhs)
	changes left-hand side vector for constraints to `lhs` More...

void	changeLhsReal (int i, const Real &lhs)
	changes left-hand side of row `i` to `lhs` More...

void	changeRhsReal (const VectorReal &rhs)
	changes right-hand side vector to `rhs` More...

void	changeRhsReal (int i, const Real &rhs)
	changes right-hand side of row `i` to `rhs` More...

void	changeRangeReal (const VectorReal &lhs, const VectorReal &rhs)
	changes left- and right-hand side vectors More...

void	changeRangeReal (int i, const Real &lhs, const Real &rhs)
	changes left- and right-hand side of row `i` More...

void	changeColReal (int i, const LPColReal &lpcol)
	replaces column `i` with `lpcol` More...

void	changeLowerReal (const VectorReal &lower)
	changes vector of lower bounds to `lower` More...

void	changeLowerReal (int i, const Real &lower)
	changes lower bound of column i to `lower` More...

void	changeUpperReal (const VectorReal &upper)
	changes vector of upper bounds to `upper` More...

void	changeUpperReal (int i, const Real &upper)
	changes `i` 'th upper bound to `upper` More...

void	changeBoundsReal (const VectorReal &lower, const VectorReal &upper)
	changes vectors of column bounds to `lower` and `upper` More...

void	changeBoundsReal (int i, const Real &lower, const Real &upper)
	changes bounds of column `i` to `lower` and `upper` More...

void	changeObjReal (const VectorReal &obj)
	changes objective function vector to `obj` More...

void	changeObjReal (int i, const Real &obj)
	changes objective coefficient of column i to `obj` More...

void	changeElementReal (int i, int j, const Real &val)
	changes matrix entry in row `i` and column `j` to `val` More...

void	removeRowReal (int i)
	removes row `i` More...

void	removeRowsReal (int perm[])
	removes all rows with an index `i` such that `perm`[i] < 0; upon completion, `perm`[i] >= 0 indicates the new index where row `i` has been moved to; note that `perm` must point to an array of size at least numRowsReal() More...

void	removeRowsReal (int idx[], int n, int perm[]=0)
	remove all rows with indices in array `idx` of size `n`; an array `perm` of size numRowsReal() may be passed as buffer memory More...

void	removeRowRangeReal (int start, int end, int perm[]=0)
	removes rows `start` to `end` including both; an array `perm` of size numRowsReal() may be passed as buffer memory More...

void	removeColReal (int i)
	removes column i More...

void	removeColsReal (int perm[])
	removes all columns with an index `i` such that `perm`[i] < 0; upon completion, `perm`[i] >= 0 indicates the new index where column `i` has been moved to; note that `perm` must point to an array of size at least numColsReal() More...

void	removeColsReal (int idx[], int n, int perm[]=0)
	remove all columns with indices in array `idx` of size `n`; an array `perm` of size numColsReal() may be passed as buffer memory More...

void	removeColRangeReal (int start, int end, int perm[]=0)
	removes columns `start` to `end` including both; an array `perm` of size numColsReal() may be passed as buffer memory More...

void	clearLPReal ()
	clears the LP More...

void	syncLPReal ()
	synchronizes real LP with rational LP, i.e., copies (rounded) rational LP into real LP, if sync mode is manual More...


void	addRowRational (const LPRowRational &lprow)
	adds a single row More...

void	addRowsRational (const LPRowSetRational &lprowset)
	adds multiple rows More...

void	addColRational (const LPColRational &lpcol)
	adds a single column More...

void	addColsRational (const LPColSetRational &lpcolset)
	adds multiple columns More...

void	changeRowRational (int i, const LPRowRational &lprow)
	replaces row `i` with `lprow` More...

void	changeLhsRational (const VectorRational &lhs)
	changes left-hand side vector for constraints to `lhs` More...

void	changeLhsRational (int i, const Rational &lhs)
	changes left-hand side of row `i` to `lhs` More...

void	changeRhsRational (const VectorRational &rhs)
	changes right-hand side vector to `rhs` More...

void	changeRhsRational (int i, const Rational &rhs)
	changes right-hand side of row `i` to `rhs` More...

void	changeRangeRational (const VectorRational &lhs, const VectorRational &rhs)
	changes left- and right-hand side vectors More...

void	changeRangeRational (int i, const Rational &lhs, const Rational &rhs)
	changes left- and right-hand side of row `i` More...

void	changeColRational (int i, const LPColRational &lpcol)
	replaces column `i` with `lpcol` More...

void	changeLowerRational (const VectorRational &lower)
	changes vector of lower bounds to `lower` More...

void	changeLowerRational (int i, const Rational &lower)
	changes lower bound of column i to `lower` More...

void	changeUpperRational (const VectorRational &upper)
	changes vector of upper bounds to `upper` More...

void	changeUpperRational (int i, const Rational &upper)
	changes `i` 'th upper bound to `upper` More...

void	changeBoundsRational (const VectorRational &lower, const VectorRational &upper)
	changes vectors of column bounds to `lower` and `upper` More...

void	changeBoundsRational (int i, const Rational &lower, const Rational &upper)
	changes bounds of column `i` to `lower` and `upper` More...

void	changeObjRational (const VectorRational &obj)
	changes objective function vector to `obj` More...

void	changeObjRational (int i, const Rational &obj)
	changes objective coefficient of column i to `obj` More...

void	changeElementRational (int i, int j, const Rational &val)
	changes matrix entry in row `i` and column `j` to `val` More...

void	removeRowRational (int i)
	removes row `i` More...

void	removeRowsRational (int perm[])
	removes all rows with an index `i` such that `perm`[i] < 0; upon completion, `perm`[i] >= 0 indicates the new index where row `i` has been moved to; note that `perm` must point to an array of size at least numRowsRational() More...

void	removeRowsRational (int idx[], int n, int perm[]=0)
	remove all rows with indices in array `idx` of size `n`; an array `perm` of size numRowsRational() may be passed as buffer memory More...

void	removeRowRangeRational (int start, int end, int perm[]=0)
	removes rows `start` to `end` including both; an array `perm` of size numRowsRational() may be passed as buffer memory More...

void	removeColRational (int i)
	removes column i More...

void	removeColsRational (int perm[])
	removes all columns with an index `i` such that `perm`[i] < 0; upon completion, `perm`[i] >= 0 indicates the new index where column `i` has been moved to; note that `perm` must point to an array of size at least numColsRational() More...

void	removeColsRational (int idx[], int n, int perm[]=0)
	remove all columns with indices in array `idx` of size `n`; an array `perm` of size numColsRational() may be passed as buffer memory More...

void	removeColRangeRational (int start, int end, int perm[]=0)
	removes columns `start` to `end` including both; an array `perm` of size numColsRational() may be passed as buffer memory More...

void	clearLPRational ()
	clears the LP More...

void	syncLPRational ()
	synchronizes rational LP with real LP, i.e., copies real LP to rational LP, if sync mode is manual More...


SPxSolver::Status	optimize ()
	optimize the given LP More...

SPxSolver::Status	solve ()

SPxSolver::Status	status () const
	returns the current solver status More...

bool	hasPrimal () const
	is a primal feasible solution available? More...

bool	hasPrimalRay () const
	is a primal unbounded ray available? More...

bool	hasDual () const
	is a dual feasible solution available? More...

bool	hasDualFarkas () const
	is Farkas proof of infeasibility available? More...


Real	objValueReal ()
	returns the objective value if a primal solution is available More...

bool	getPrimalReal (VectorReal &vector)
	gets the primal solution vector if available; returns true on success More...

bool	getSlacksReal (VectorReal &vector)
	gets the vector of slack values if available; returns true on success More...

bool	getPrimalRayReal (VectorReal &vector)
	gets the primal ray if available; returns true on success More...

bool	getDualReal (VectorReal &vector)
	gets the dual solution vector if available; returns true on success More...

bool	getRedCostReal (VectorReal &vector)
	gets the vector of reduced cost values if available; returns true on success More...

bool	getDualFarkasReal (VectorReal &vector)
	gets the Farkas proof if available; returns true on success More...

bool	getBoundViolationReal (Real &maxviol, Real &sumviol)
	gets violation of bounds; returns true on success More...

bool	getRowViolationReal (Real &maxviol, Real &sumviol)
	gets violation of constraints; returns true on success More...

bool	getRedCostViolationReal (Real &maxviol, Real &sumviol)
	gets violation of reduced costs; returns true on success More...

bool	getDualViolationReal (Real &maxviol, Real &sumviol)
	gets violation of dual multipliers; returns true on success More...


Rational	objValueRational ()
	returns the objective value if a primal solution is available More...

bool	getPrimalRational (VectorRational &vector)
	gets the primal solution vector if available; returns true on success More...

bool	getSlacksRational (VectorRational &vector)
	gets the vector of slack values if available; returns true on success More...

bool	getPrimalRayRational (VectorRational &vector)
	gets the primal ray if LP is unbounded; returns true on success More...

bool	getDualRational (VectorRational &vector)
	gets the dual solution vector if available; returns true on success More...

bool	getRedCostRational (VectorRational &vector)
	gets the vector of reduced cost values if available; returns true on success More...

bool	getDualFarkasRational (VectorRational &vector)
	gets the Farkas proof if LP is infeasible; returns true on success More...

bool	getBoundViolationRational (Rational &maxviol, Rational &sumviol)
	gets violation of bounds; returns true on success More...

bool	getRowViolationRational (Rational &maxviol, Rational &sumviol)
	gets violation of constraints; returns true on success More...

bool	getRedCostViolationRational (Rational &maxviol, Rational &sumviol)
	gets violation of reduced costs; returns true on success More...

bool	getDualViolationRational (Rational &maxviol, Rational &sumviol)
	gets violation of dual multipliers; returns true on success More...

int	totalSizePrimalRational (const int base=2)
	get size of primal solution More...

int	totalSizeDualRational (const int base=2)
	get size of dual solution More...

int	dlcmSizePrimalRational (const int base=2)
	get size of least common multiple of denominators in primal solution More...

int	dlcmSizeDualRational (const int base=2)
	get size of least common multiple of denominators in dual solution More...

int	dmaxSizePrimalRational (const int base=2)
	get size of largest denominator in primal solution More...

int	dmaxSizeDualRational (const int base=2)
	get size of largest denominator in dual solution More...


bool	hasBasis () const
	is an advanced starting basis available? More...

SPxBasis::SPxStatus	basisStatus () const
	returns the current basis status More...

SPxSolver::VarStatus	basisRowStatus (int row) const
	returns basis status for a single row More...

SPxSolver::VarStatus	basisColStatus (int col) const
	returns basis status for a single column More...

void	getBasis (SPxSolver::VarStatus rows[], SPxSolver::VarStatus cols[]) const
	gets current basis via arrays of statuses More...

void	getBasisInd (int *bind) const
	gets the indices of the basic columns and rows; basic column n gives value n, basic row m gives value -1-m More...

bool	getEstimatedCondition (Real &condition)
	computes an estimated condition number for the current basis matrix using the power method; returns true on success More...

bool	getExactCondition (Real &condition)
	computes the exact condition number for the current basis matrix using the power method; returns true on success More...

bool	getBasisInverseRowReal (int r, Real coef, int inds=NULL, int *ninds=NULL, bool unscale=true)
	computes row `r` of basis inverse; returns true on success More...

bool	getBasisInverseColReal (int c, Real coef, int inds=NULL, int *ninds=NULL, bool unscale=true)
	computes column `c` of basis inverse; returns true on success More...

bool	getBasisInverseTimesVecReal (Real rhs, Real sol, bool unscale=true)
	computes dense solution of basis matrix B * `sol` = `rhs`; returns true on success More...

bool	multBasis (Real *vec, bool unscale=true)
	multiply with basis matrix; B * `vec` (inplace) More...

bool	multBasisTranspose (Real *vec, bool unscale=true)
	multiply with transpose of basis matrix; `vec` * B^T (inplace) More...

bool	computeBasisInverseRational ()
	compute rational basis inverse; returns true on success More...

bool	getBasisIndRational (DataArray< int > &bind)
	gets an array of indices for the columns of the rational basis matrix; bind[i] >= 0 means that the i-th column of the basis matrix contains variable bind[i]; bind[i] < 0 means that the i-th column of the basis matrix contains the slack variable for row -bind[i]-1; performs rational factorization if not available; returns true on success More...

bool	getBasisInverseRowRational (const int r, SSVectorRational &vec)
	computes row r of basis inverse; performs rational factorization if not available; returns true on success More...

bool	getBasisInverseColRational (const int c, SSVectorRational &vec)
	computes column c of basis inverse; performs rational factorization if not available; returns true on success More...

bool	getBasisInverseTimesVecRational (const SVectorRational &rhs, SSVectorRational &sol)
	computes solution of basis matrix B * sol = rhs; performs rational factorization if not available; returns true on success More...

void	setBasis (const SPxSolver::VarStatus rows[], const SPxSolver::VarStatus cols[])
	sets starting basis via arrays of statuses More...

void	clearBasis ()
	clears starting basis More...


int	numIterations () const
	number of iterations since last call to solve More...

Real	solveTime () const
	time spent in last call to solve More...

std::string	statisticString () const
	statistical information in form of a string More...

const char *	getStarterName ()
	name of starter More...

const char *	getSimplifierName ()
	name of simplifier More...

const char *	getScalerName ()
	name of scaling method More...

const char *	getPricerName ()
	name of currently loaded pricer More...

const char *	getRatiotesterName ()
	name of currently loaded ratiotester More...


bool	readFile (const char filename, NameSet rowNames=0, NameSet colNames=0, DIdxSet intVars=0)
	reads LP file in LP or MPS format according to READMODE parameter; gets row names, column names, and integer variables if desired; returns true on success More...

bool	writeFileReal (const char filename, const NameSet rowNames=0, const NameSet colNames=0, const DIdxSet intvars=0, const bool unscale=false) const
	writes real LP to file; LP or MPS format is chosen from the extension in `filename`; if `rowNames` and `colNames` are `NULL`, default names are used; if `intVars` is not `NULL`, the variables contained in it are marked as integer; returns true on success More...

bool	writeFileRational (const char filename, const NameSet rowNames=0, const NameSet colNames=0, const DIdxSet intvars=0) const
	writes rational LP to file; LP or MPS format is chosen from the extension in `filename`; if `rowNames` and `colNames` are `NULL`, default names are used; if `intVars` is not `NULL`, the variables contained in it are marked as integer; returns true on success More...

bool	writeDualFileReal (const char filename, const NameSet rowNames=0, const NameSet colNames=0, const DIdxSet intvars=0) const
	writes the dual of the real LP to file; LP or MPS format is chosen from the extension in `filename`; if `rowNames` and `colNames` are `NULL`, default names are used; if `intVars` is not `NULL`, the variables contained in it are marked as integer; returns true on success More...

bool	readBasisFile (const char filename, const NameSet rowNames=0, const NameSet *colNames=0)
	reads basis information from `filename` and returns true on success; if `rowNames` and `colNames` are `NULL`, default names are assumed; returns true on success More...

bool	writeBasisFile (const char filename, const NameSet rowNames=0, const NameSet *colNames=0, const bool cpxFormat=false) const
	writes basis information to `filename`; if `rowNames` and `colNames` are `NULL`, default names are used; returns true on success More...

void	writeStateReal (const char filename, const NameSet rowNames=0, const NameSet *colNames=0, const bool cpxFormat=false) const
	writes internal LP, basis information, and parameter settings; if `rowNames` and `colNames` are `NULL`, default names are used More...

void	writeStateRational (const char filename, const NameSet rowNames=0, const NameSet *colNames=0, const bool cpxFormat=false) const
	writes internal LP, basis information, and parameter settings; if `rowNames` and `colNames` are `NULL`, default names are used More...


void	printSolutionStatistics (std::ostream &os)
	prints solution statistics More...

void	printSolvingStatistics (std::ostream &os)
	prints statistics on solving process More...

void	printShortStatistics (std::ostream &os)
	prints short statistics More...

void	printStatistics (std::ostream &os)
	prints complete statistics More...

void	printStatus (std::ostream &os, SPxSolver::Status status)
	prints status More...


void	printVersion () const
	prints version and compilation options More...

bool	areLPsInSync (const bool checkVecVals=true, const bool checkMatVals=false, const bool quiet=false) const
	checks if real LP and rational LP are in sync; dimensions will always be compared, vector and matrix values only if the respective parameter is set to true. If quiet is set to true the function will only display which vectors are different. More...

void	setRandomSeed (unsigned int seed)
	set the random seeds of the solver instance More...

unsigned int	randomSeed () const
	returns the current random seed of the solver instance More...

Private Member Functions

void	_ensureDSVectorRationalMemory (DSVectorRational &vec, const int newmax) const
	extends sparse vector to hold newmax entries if and only if it holds no more free entries More...

void	_idxToPerm (int idx, int idxSize, int perm, int permSize) const
	creates a permutation for removing rows/columns from an array of indices More...

void	_rangeToPerm (int start, int end, int *perm, int permSize) const
	creates a permutation for removing rows/columns from a range of indices More...

bool	_isConsistent () const
	checks consistency More...

bool	_isSolveStopped (bool &stoppedTime, bool &stoppedIter) const
	should solving process be stopped? More...

RangeType	_rangeTypeReal (const Real &lower, const Real &upper) const
	determines RangeType from real bounds More...

RangeType	_rangeTypeRational (const Rational &lower, const Rational &upper) const
	determines RangeType from rational bounds More...

RangeType	_switchRangeType (const RangeType &rangeType) const
	switches RANGETYPE_LOWER to RANGETYPE_UPPER and vice versa More...

bool	_lowerFinite (const RangeType &rangeType) const
	checks whether RangeType corresponds to finite lower bound More...

bool	_upperFinite (const RangeType &rangeType) const
	checks whether RangeType corresponds to finite upper bound More...


void	_addRowReal (const LPRowReal &lprow)
	adds a single row to the real LP and adjusts basis More...

void	_addRowReal (Real lhs, const SVectorReal &lprow, Real rhs)
	adds a single row to the real LP and adjusts basis More...

void	_addRowsReal (const LPRowSetReal &lprowset)
	adds multiple rows to the real LP and adjusts basis More...

void	_addColReal (const LPColReal &lpcol)
	adds a single column to the real LP and adjusts basis More...

void	_addColReal (Real obj, Real lower, const SVectorReal &lpcol, Real upper)
	adds a single column to the real LP and adjusts basis More...

void	_addColsReal (const LPColSetReal &lpcolset)
	adds multiple columns to the real LP and adjusts basis More...

void	_changeRowReal (int i, const LPRowReal &lprow)
	replaces row `i` with `lprow` and adjusts basis More...

void	_changeLhsReal (const VectorReal &lhs)
	changes left-hand side vector for constraints to `lhs` and adjusts basis More...

void	_changeLhsReal (int i, const Real &lhs)
	changes left-hand side of row `i` to `lhs` and adjusts basis More...

void	_changeRhsReal (const VectorReal &rhs)
	changes right-hand side vector to `rhs` and adjusts basis More...

void	_changeRhsReal (int i, const Real &rhs)
	changes right-hand side of row `i` to `rhs` and adjusts basis More...

void	_changeRangeReal (const VectorReal &lhs, const VectorReal &rhs)
	changes left- and right-hand side vectors and adjusts basis More...

void	_changeRangeReal (int i, const Real &lhs, const Real &rhs)
	changes left- and right-hand side of row `i` and adjusts basis More...

void	_changeColReal (int i, const LPColReal &lpcol)
	replaces column `i` with `lpcol` and adjusts basis More...

void	_changeLowerReal (const VectorReal &lower)
	changes vector of lower bounds to `lower` and adjusts basis More...

void	_changeLowerReal (int i, const Real &lower)
	changes lower bound of column i to `lower` and adjusts basis More...

void	_changeUpperReal (const VectorReal &upper)
	changes vector of upper bounds to `upper` and adjusts basis More...

void	_changeUpperReal (int i, const Real &upper)
	changes `i` 'th upper bound to `upper` and adjusts basis More...

void	_changeBoundsReal (const VectorReal &lower, const VectorReal &upper)
	changes vectors of column bounds to `lower` and `upper` and adjusts basis More...

void	_changeBoundsReal (int i, const Real &lower, const Real &upper)
	changes bounds of column `i` to `lower` and `upper` and adjusts basis More...

void	_changeElementReal (int i, int j, const Real &val)
	changes matrix entry in row `i` and column `j` to `val` and adjusts basis More...

void	_removeRowReal (int i)
	removes row `i` and adjusts basis More...

void	_removeRowsReal (int perm[])
	removes all rows with an index `i` such that `perm`[i] < 0; upon completion, `perm`[i] >= 0 indicates the new index where row `i` has been moved to; note that `perm` must point to an array of size at least numRowsReal() More...

void	_removeRowsReal (int idx[], int n, int perm[])
	remove all rows with indices in array `idx` of size `n`; an array `perm` of size numRowsReal() may be passed as buffer memory More...

void	_removeRowRangeReal (int start, int end, int perm[])
	removes rows `start` to `end` including both; an array `perm` of size numRowsReal() may be passed as buffer memory More...

void	_removeColReal (int i)
	removes column i More...

void	_removeColsReal (int perm[])
	removes all columns with an index `i` such that `perm`[i] < 0; upon completion, `perm`[i] >= 0 indicates the new index where column `i` has been moved to; note that `perm` must point to an array of size at least numColsReal() More...

void	_removeColsReal (int idx[], int n, int perm[])
	remove all columns with indices in array `idx` of size `n`; an array `perm` of size numColsReal() may be passed as buffer memory More...

void	_removeColRangeReal (int start, int end, int perm[])
	removes columns `start` to `end` including both; an array `perm` of size numColsReal() may be passed as buffer memory More...

void	_invalidateSolution ()
	invalidates solution More...

void	_enableSimplifierAndScaler ()
	enables simplifier and scaler according to current parameters More...

void	_disableSimplifierAndScaler ()
	disables simplifier and scaler More...

void	_ensureRationalLP ()
	ensures that the rational LP is available; performs no sync More...

void	_ensureRealLPLoaded ()
	ensures that the real LP and the basis are loaded in the solver; performs no sync More...

void	_solveRealLPAndRecordStatistics ()
	call floating-point solver and update statistics on iterations etc. More...

bool	_readFileReal (const char filename, NameSet rowNames=0, NameSet colNames=0, DIdxSet intVars=0)
	reads real LP in LP or MPS format from file and returns true on success; gets row names, column names, and integer variables if desired More...

bool	_readFileRational (const char filename, NameSet rowNames=0, NameSet colNames=0, DIdxSet intVars=0)
	reads rational LP in LP or MPS format from file and returns true on success; gets row names, column names, and integer variables if desired More...

void	_completeRangeTypesRational ()
	completes range type arrays after adding columns and/or rows More...

void	_recomputeRangeTypesReal ()
	recomputes range types from scratch using real LP More...

void	_recomputeRangeTypesRational ()
	recomputes range types from scratch using rational LP More...

void	_syncLPReal (bool time=true)
	synchronizes real LP with rational LP, i.e., copies (rounded) rational LP into real LP, without looking at the sync mode More...

void	_syncLPRational (bool time=true)
	synchronizes rational LP with real LP, i.e., copies real LP to rational LP, without looking at the sync mode More...

void	_syncRealSolution ()
	synchronizes real solution with rational solution, i.e., copies real solution to rational solution More...

void	_syncRationalSolution ()
	synchronizes rational solution with real solution, i.e., copies (rounded) rational solution to real solution More...

const UnitVectorRational *	_unitVectorRational (const int i)
	returns pointer to a constant unit vector available until destruction of the SoPlex class More...

bool	_parseSettingsLine (char *line, const int lineNumber)
	parses one line in a settings file and returns true on success; note that the string is modified More...


void	_optimizeRational ()
	solves rational LP More...

void	_performOptIRStable (SolRational &sol, bool acceptUnbounded, bool acceptInfeasible, int minRounds, bool &primalFeasible, bool &dualFeasible, bool &infeasible, bool &unbounded, bool &stopped, bool &stoppedIter, bool &error)
	solves current problem with iterative refinement and recovery mechanism More...

void	_performUnboundedIRStable (SolRational &sol, bool &hasUnboundedRay, bool &stopped, bool &stoppedIter, bool &error)
	performs iterative refinement on the auxiliary problem for testing unboundedness More...

void	_performFeasIRStable (SolRational &sol, bool &withDualFarkas, bool &stopped, bool &stoppedIter, bool &error)
	performs iterative refinement on the auxiliary problem for testing feasibility More...

void	_lift ()
	reduces matrix coefficient in absolute value by the lifting procedure of Thiele et al. 2013 More...

void	_project (SolRational &sol)
	undoes lifting More...

void	_storeBasis ()
	store basis More...

void	_restoreBasis ()
	restore basis More...

void	_storeLPReal ()
	stores objective, bounds, and sides of real LP More...

void	_restoreLPReal ()
	restores objective, bounds, and sides of real LP More...

void	_transformEquality ()
	introduces slack variables to transform inequality constraints into equations for both rational and real LP, which should be in sync More...

void	_untransformEquality (SolRational &sol)
	undoes transformation to equality form More...

void	_transformUnbounded ()
	transforms LP to unboundedness problem by moving the objective function to the constraints, changing right-hand side and bounds to zero, and adding an auxiliary variable for the decrease in the objective function More...

void	_untransformUnbounded (SolRational &sol, bool unbounded)
	undoes transformation to unboundedness problem More...

void	_transformFeasibility ()
	transforms LP to feasibility problem by removing the objective function, shifting variables, and homogenizing the right-hand side More...

void	_untransformFeasibility (SolRational &sol, bool infeasible)
	undoes transformation to feasibility problem More...

void	_computeInfeasBox (SolRational &sol, bool transformed)

SPxSolver::Status	_solveRealForRational (bool fromscratch, VectorReal &primal, VectorReal &dual, DataArray< SPxSolver::VarStatus > &basisStatusRows, DataArray< SPxSolver::VarStatus > &basisStatusCols, bool &returnedBasis)
	solves real LP during iterative refinement More...

SPxSolver::Status	_solveRealStable (bool acceptUnbounded, bool acceptInfeasible, VectorReal &primal, VectorReal &dual, DataArray< SPxSolver::VarStatus > &basisStatusRows, DataArray< SPxSolver::VarStatus > &basisStatusCols, bool &returnedBasis, const bool forceNoSimplifier=false)
	solves real LP with recovery mechanism More...

void	_computeBasisInverseRational ()
	computes rational inverse of basis matrix as defined by _rationalLUSolverBind More...

void	_factorizeColumnRational (SolRational &sol, DataArray< SPxSolver::VarStatus > &basisStatusRows, DataArray< SPxSolver::VarStatus > &basisStatusCols, bool &stoppedTime, bool &stoppedIter, bool &error, bool &optimal)
	factorizes rational basis matrix in column representation More...

bool	_reconstructSolutionRational (SolRational &sol, DataArray< SPxSolver::VarStatus > &basisStatusRows, DataArray< SPxSolver::VarStatus > &basisStatusCols, const Rational &denomBoundSquared)
	attempts rational reconstruction of primal-dual solution More...


void	_optimizeReal ()
	solves real LP More...

void	_evaluateSolutionReal (SPxSimplifier::Result simplificationStatus)
	checks result of the solving process and solves again without preprocessing if necessary More...

void	_preprocessAndSolveReal (bool applyPreprocessing)
	solves real LP with/without preprocessing More...

void	_resolveWithoutPreprocessing (SPxSimplifier::Result simplificationStatus)
	loads original problem into solver and solves again after it has been solved to optimality with preprocessing More...

void	_verifySolutionReal ()
	verify computed solution and resolve if necessary More...

void	_storeSolutionReal (bool verify=true)
	stores solution of the real LP; before calling this, the real LP must be loaded in the solver and solved (again) More...

void	_storeSolutionRealFromPresol ()
	stores solution from the simplifier because problem vanished in presolving step More...

void	_unscaleSolutionReal (SPxLPReal &LP, bool persistent=true)
	unscales stored solution to remove internal or external scaling of LP More...

void	_loadRealLP (bool initBasis)
	load original LP and possibly setup a slack basis More...

void	_checkScaling (SPxLPReal *origLP) const
	check scaling of LP More...

void	_checkBasisScaling ()
	check correctness of (un)scaled basis matrix operations More...

bool	_reapplyPersistentScaling () const
	check whether persistent scaling is supposed to be reapplied again after unscaling More...

void	_solveDecompositionDualSimplex ()
	solves LP using the decomposition based dual simplex More...

void	_createDecompReducedAndComplementaryProblems ()
	creating copies of the original problem that will be manipulated to form the reduced and complementary problems More...

void	_formDecompReducedProblem (bool &stop)
	forms the reduced problem More...

void	_solveDecompReducedProblem ()
	solves the reduced problem More...

void	_formDecompComplementaryProblem ()
	forms the complementary problem More...

void	_decompSimplifyAndSolve (SPxSolver &solver, SLUFactor &sluFactor, bool fromScratch, bool applyPreprocessing)
	simplifies the problem and solves More...

void	_decompResolveWithoutPreprocessing (SPxSolver &solver, SLUFactor &sluFactor, SPxSimplifier::Result result)
	loads original problem into solver and solves again after it has been solved to optimality with preprocessing More...

void	_getZeroDualMultiplierIndices (Vector feasVector, int nonposind, int colsforremoval, int *nnonposind, bool &stop)
	identifies the columns of the row-form basis that correspond to rows with zero dual multipliers. More...

void	_getCompatibleColumns (Vector feasVector, int nonposind, int compatind, int rowsforremoval, int colsforremoval, int nnonposind, int *ncompatind, bool formRedProb, bool &stop)
	retrieves the compatible columns from the constraint matrix More...

void	_computeReducedProbObjCoeff (bool &stop)
	computes the reduced problem objective coefficients More...

void	_getCompatibleBoundCons (LPRowSet &boundcons, int compatboundcons, int nonposind, int *ncompatboundcons, int nnonposind, bool &stop)
	computes the compatible bound constraints and adds them to the reduced problem More...

void	_getRowsForRemovalComplementaryProblem (int nonposind, int bind, int rowsforremoval, int nrowsforremoval, int nnonposind)
	computes the rows to remove from the complementary problem More...

void	_deleteAndUpdateRowsComplementaryProblem (SPxRowId rangedRowIds[], int &naddedrows)
	removing rows from the complementary problem. More...

void	_evaluateSolutionDecomp (SPxSolver &solver, SLUFactor &sluFactor, SPxSimplifier::Result result)
	evaluates the solution of the reduced problem for the DBDS More...

void	_updateDecompReducedProblem (Real objVal, DVector dualVector, DVector redcostVector, DVector compPrimalVector, DVector compDualVector)
	update the reduced problem with additional columns and rows More...

void	_updateDecompReducedProblemViol (bool allrows)
	update the reduced problem with additional columns and rows based upon the violated original bounds and rows More...

void	_findViolatedRows (Real compObjValue, DataArray< RowViolation > &violatedrows, int &nviolatedrows)
	builds the update rows with those violated in the complmentary problem More...

void	_updateDecompComplementaryDualProblem (bool origObj)
	update the dual complementary problem with additional columns and rows More...

void	_updateDecompComplementaryPrimalProblem (bool origObj)
	update the primal complementary problem with additional columns and rows More...

void	_checkOriginalProblemOptimality (Vector primalVector, bool printViol)
	checking the optimality of the original problem. More...

void	_updateComplementaryDualSlackColCoeff ()
	updating the slack column coefficients to adjust for equality constraints More...

void	_updateComplementaryPrimalSlackColCoeff ()
	updating the slack column coefficients to adjust for equality constraints More...

void	_removeComplementaryDualFixedPrimalVars (int *currFixedVars)
	removing the dual columns related to the fixed variables More...

void	_identifyComplementaryDualFixedPrimalVars (int *currFixedVars)
	removing the dual columns related to the fixed variables More...

void	_updateComplementaryDualFixedPrimalVars (int *currFixedVars)
	updating the dual columns related to the fixed primal variables. More...

void	_identifyComplementaryPrimalFixedPrimalVars (int *currFixedVars)
	removing the dual columns related to the fixed variables More...

void	_updateComplementaryPrimalFixedPrimalVars (int *currFixedVars)
	updating the dual columns related to the fixed primal variables. More...

void	_setComplementaryDualOriginalObjective ()
	updating the complementary dual problem with the original objective function More...

void	_setComplementaryPrimalOriginalObjective ()
	updating the complementary primal problem with the original objective function More...

int	getOrigVarFixedDirection (int colNum)
	determining which bound the primal variables will be fixed to. More...

bool	checkBasisDualFeasibility (Vector feasVec)
	checks the dual feasibility of the current basis More...

DualSign	getExpectedDualVariableSign (int rowNumber)
	returns the expected sign of the dual variables for the reduced problem More...

DualSign	getOrigProbDualVariableSign (int rowNumber)
	returns the expected sign of the dual variables for the original problem More...

void	printDecompDisplayLine (SPxSolver &solver, const SPxOut::Verbosity origVerb, bool force, bool forceHead)
	prints a display line of the flying table for the DBDS More...

void	getOriginalProblemStatistics ()
	stores the problem statistics of the original problem More...

void	printOriginalProblemStatistics (std::ostream &os)
	stores the problem statistics of the original problem More...

Real	getCompSlackVarCoeff (int primalRowNum)
	gets the coefficient of the slack variable in the primal complementary problem More...

bool	getDecompBoundViolation (Real &maxviol, Real &sumviol)
	gets violation of bounds; returns true on success More...

bool	getDecompRowViolation (Real &maxviol, Real &sumviol)
	gets violation of constraints; returns true on success More...

bool	decompTerminate (Real timeLimit)
	function call to terminate the decomposition simplex More...

void	_writeOriginalProblemBasis (const char filename, NameSet rowNames, NameSet *colNames, bool cpxFormat)
	function to build a basis for the original problem as given by the solution to the reduced problem More...

void	getOriginalProblemBasisRowStatus (DataArray< int > &degenerateRowNums, DataArray< SPxSolver::VarStatus > &degenerateRowStatus, int &nDegenerateRows, int &nNonBasicRows)
	function to retrieve the original problem row basis status from the reduced and complementary problems More...

void	getOriginalProblemBasisColStatus (int &nNonBasicCols)
	function to retrieve the column status for the original problem basis from the reduced and complementary problems More...

Private Attributes

Statistics *	_statistics
	statistics since last call to solveReal() or solveRational() More...


Settings *	_currentSettings

Rational	_rationalPosInfty

Rational	_rationalNegInfty

Rational	_rationalFeastol

Rational	_rationalOpttol

Rational	_rationalMaxscaleincr


SPxSolver	_solver

SLUFactor	_slufactor

SPxMainSM	_simplifierMainSM

SPxEquiliSC	_scalerUniequi

SPxEquiliSC	_scalerBiequi

SPxGeometSC	_scalerGeo1

SPxGeometSC	_scalerGeo8

SPxLeastSqSC	_scalerLeastsq

SPxWeightST	_starterWeight

SPxSumST	_starterSum

SPxVectorST	_starterVector

SPxAutoPR	_pricerAuto

SPxDantzigPR	_pricerDantzig

SPxParMultPR	_pricerParMult

SPxDevexPR	_pricerDevex

SPxSteepPR	_pricerQuickSteep

SPxSteepExPR	_pricerSteep

SPxDefaultRT	_ratiotesterTextbook

SPxHarrisRT	_ratiotesterHarris

SPxFastRT	_ratiotesterFast

SPxBoundFlippingRT	_ratiotesterBoundFlipping

SPxLPReal *	_realLP

SPxLPReal *	_decompLP

SPxSimplifier *	_simplifier

SPxScaler *	_scaler

SPxStarter *	_starter

bool	_isRealLPLoaded

bool	_isRealLPScaled

bool	_applyPolishing

DVectorReal	_manualLower

DVectorReal	_manualUpper

DVectorReal	_manualLhs

DVectorReal	_manualRhs

DVectorReal	_manualObj

SPxLPReal	_manualRealLP


SPxSolver::Status	_status

int	_lastSolveMode

DataArray< SPxSolver::VarStatus >	_basisStatusRows

DataArray< SPxSolver::VarStatus >	_basisStatusCols

SolReal	_solReal

SolRational	_solRational

SolRational	_workSol

bool	_hasBasis

bool	_hasSolReal

bool	_hasSolRational


int	_optimizeCalls

int	_unscaleCalls

Rational	_rationalPosone

Rational	_rationalNegone

Rational	_rationalZero

enum	BoolParam { LIFTING = 0, EQTRANS = 1, TESTDUALINF = 2, RATFAC = 3, USEDECOMPDUALSIMPLEX = 4, COMPUTEDEGEN = 5, USECOMPDUAL = 6, EXPLICITVIOL = 7, ACCEPTCYCLING = 8, RATREC = 9, POWERSCALING = 10, RATFACJUMP = 11, ROWBOUNDFLIPS = 12, PERSISTENTSCALING = 13, FULLPERTURBATION = 14, BOOLPARAM_COUNT = 15 }
	boolean parameters More...

enum	IntParam { OBJSENSE = 0, REPRESENTATION = 1, ALGORITHM = 2, FACTOR_UPDATE_TYPE = 3, FACTOR_UPDATE_MAX = 4, ITERLIMIT = 5, REFLIMIT = 6, STALLREFLIMIT = 7, DISPLAYFREQ = 8, VERBOSITY = 9, SIMPLIFIER = 10, SCALER = 11, STARTER = 12, PRICER = 13, RATIOTESTER = 14, SYNCMODE = 15, READMODE = 16, SOLVEMODE = 17, CHECKMODE = 18, TIMER = 19, HYPER_PRICING = 20, RATFAC_MINSTALLS = 21, LEASTSQ_MAXROUNDS = 22, SOLUTION_POLISHING = 23, DECOMP_ITERLIMIT = 24, DECOMP_MAXADDEDROWS = 25, DECOMP_DISPLAYFREQ = 26, DECOMP_VERBOSITY = 27, INTPARAM_COUNT = 28 }
	integer parameters More...

enum	{ OBJSENSE_MINIMIZE = -1, OBJSENSE_MAXIMIZE = 1 }
	values for parameter OBJSENSE More...

enum	{ REPRESENTATION_AUTO = 0, REPRESENTATION_COLUMN = 1, REPRESENTATION_ROW = 2 }
	values for parameter REPRESENTATION More...

enum	{ ALGORITHM_PRIMAL = 0, ALGORITHM_DUAL = 1 }
	values for parameter ALGORITHM More...

enum	{ FACTOR_UPDATE_TYPE_ETA = 0, FACTOR_UPDATE_TYPE_FT = 1 }
	values for parameter FACTOR_UPDATE_TYPE More...

enum	{ VERBOSITY_ERROR = 0, VERBOSITY_WARNING = 1, VERBOSITY_DEBUG = 2, VERBOSITY_NORMAL = 3, VERBOSITY_HIGH = 4, VERBOSITY_FULL = 5 }
	values for parameter VERBOSITY More...

enum	{ SIMPLIFIER_OFF = 0, SIMPLIFIER_AUTO = 1 }
	values for parameter SIMPLIFIER More...

enum	{ SCALER_OFF = 0, SCALER_UNIEQUI = 1, SCALER_BIEQUI = 2, SCALER_GEO1 = 3, SCALER_GEO8 = 4, SCALER_LEASTSQ = 5 }
	values for parameter SCALER More...

enum	{ STARTER_OFF = 0, STARTER_WEIGHT = 1, STARTER_SUM = 2, STARTER_VECTOR = 3 }
	values for parameter STARTER More...

enum	{ PRICER_AUTO = 0, PRICER_DANTZIG = 1, PRICER_PARMULT = 2, PRICER_DEVEX = 3, PRICER_QUICKSTEEP = 4, PRICER_STEEP = 5 }
	values for parameter PRICER More...

enum	{ RATIOTESTER_TEXTBOOK = 0, RATIOTESTER_HARRIS = 1, RATIOTESTER_FAST = 2, RATIOTESTER_BOUNDFLIPPING = 3 }
	values for parameter RATIOTESTER More...

enum	{ SYNCMODE_ONLYREAL = 0, SYNCMODE_AUTO = 1, SYNCMODE_MANUAL = 2 }
	values for parameter SYNCMODE More...

enum	{ READMODE_REAL = 0, READMODE_RATIONAL = 1 }
	values for parameter READMODE More...

enum	{ SOLVEMODE_REAL = 0, SOLVEMODE_AUTO = 1, SOLVEMODE_RATIONAL = 2 }
	values for parameter SOLVEMODE More...

enum	{ CHECKMODE_REAL = 0, CHECKMODE_AUTO = 1, CHECKMODE_RATIONAL = 2 }
	values for parameter CHECKMODE More...

enum	{ TIMER_OFF = 0, TIMER_CPU = 1, TIMER_WALLCLOCK = 2 }
	values for parameter TIMER More...

enum	{ HYPER_PRICING_OFF = 0, HYPER_PRICING_AUTO = 1, HYPER_PRICING_ON = 2 }
	values for parameter HYPER_PRICING More...

enum	{ POLISHING_OFF = 0, POLISHING_MAXBASICSLACK = 1, POLISHING_MINBASICSLACK = 2 }
	values for parameter SOLUTION_POLISHING More...

enum	RealParam { FEASTOL = 0, OPTTOL = 1, EPSILON_ZERO = 2, EPSILON_FACTORIZATION = 3, EPSILON_UPDATE = 4, EPSILON_PIVOT = 5, INFTY = 6, TIMELIMIT = 7, OBJLIMIT_LOWER = 8, OBJLIMIT_UPPER = 9, FPFEASTOL = 10, FPOPTTOL = 11, MAXSCALEINCR = 12, LIFTMINVAL = 13, LIFTMAXVAL = 14, SPARSITY_THRESHOLD = 15, REPRESENTATION_SWITCH = 16, RATREC_FREQ = 17, MINRED = 18, REFAC_BASIS_NNZ = 19, REFAC_UPDATE_FILL = 20, REFAC_MEM_FACTOR = 21, LEASTSQ_ACRCY = 22, OBJ_OFFSET = 23, REALPARAM_COUNT = 24 }
	real parameters More...

SPxOut	spxout

bool	boolParam (const BoolParam param) const
	returns boolean parameter value More...

int	intParam (const IntParam param) const
	returns integer parameter value More...

Real	realParam (const RealParam param) const
	returns real parameter value More...

const Settings &	settings () const
	returns current parameter settings More...

bool	setBoolParam (const BoolParam param, const bool value, const bool init=true)
	sets boolean parameter value; returns true on success More...

bool	setIntParam (const IntParam param, const int value, const bool init=true)
	sets integer parameter value; returns true on success More...

bool	setRealParam (const RealParam param, const Real value, const bool init=true)
	sets real parameter value; returns true on success More...

bool	setSettings (const Settings &newSettings, const bool init=true)
	sets parameter settings; returns true on success More...

void	resetSettings (const bool quiet=false, const bool init=true)
	resets default parameter settings More...

void	printUserSettings ()
	print non-default parameter values More...

bool	saveSettingsFile (const char *filename, const bool onlyChanged=false) const
	writes settings file; returns true on success More...

bool	loadSettingsFile (const char *filename)
	reads settings file; returns true on success More...

bool	parseSettingsString (char *line)
	parses one setting string and returns true on success; note that string is modified More...

enum	RangeType { RANGETYPE_FREE = 0, RANGETYPE_LOWER = 1, RANGETYPE_UPPER = 2, RANGETYPE_BOXED = 3, RANGETYPE_FIXED = 4 }
	type of bounds and sides More...

SPxLPRational *	_rationalLP

SLUFactorRational	_rationalLUSolver

DataArray< int >	_rationalLUSolverBind

LPColSetRational	_slackCols

DVectorRational	_unboundedLower

DVectorRational	_unboundedUpper

DVectorRational	_unboundedLhs

DVectorRational	_unboundedRhs

DSVectorRational	_tauColVector

DVectorRational	_feasObj

DVectorRational	_feasLhs

DVectorRational	_feasRhs

DVectorRational	_feasLower

DVectorRational	_feasUpper

DVectorRational	_modLower

DVectorRational	_modUpper

DVectorRational	_modLhs

DVectorRational	_modRhs

DVectorRational	_modObj

DSVectorRational	_primalDualDiff

DataArray< SPxSolver::VarStatus >	_storedBasisStatusRows

DataArray< SPxSolver::VarStatus >	_storedBasisStatusCols

DataArray< UnitVectorRational *>	_unitMatrixRational

bool	_storedBasis

int	_beforeLiftRows

int	_beforeLiftCols

DataArray< RangeType >	_colTypes

DataArray< RangeType >	_rowTypes

enum	decompStatus { DECOMP_ORIG = 0, DECOMP_RED = 1, DECOMP_COMP = 2 }

enum	DualSign { IS_POS = 0, IS_NEG = 1, IS_FREE = 2 }

SPxSolver	_compSolver

SLUFactor	_compSlufactor

SPxBasis	_decompTransBasis

DVector	_transformedObj

DVector	_decompFeasVector

LPRowSet	_transformedRows

SPxColId	_compSlackColId

SPxRowId	_compSlackDualRowId

bool *	_decompReducedProbRows

bool *	_decompReducedProbCols

int *	_decompRowStatus

int *	_decompColStatus

int *	_decompCompProbColIDsIdx

DataArray< SPxRowId >	_decompReducedProbRowIDs

DataArray< SPxRowId >	_decompReducedProbColRowIDs

DataArray< SPxColId >	_decompReducedProbColIDs

DataArray< SPxRowId >	_decompPrimalRowIDs

DataArray< SPxColId >	_decompPrimalColIDs

DataArray< SPxRowId >	_decompElimPrimalRowIDs

DataArray< SPxRowId >	_decompDualRowIDs

DataArray< SPxColId >	_decompDualColIDs

DataArray< SPxColId >	_decompFixedVarDualIDs

DataArray< SPxColId >	_decompVarBoundDualIDs

DataArray< SPxColId >	_decompCompPrimalFixedVarIDs

DataArray< SPxColId >	_decompCompPrimalVarBoundIDs

DataArray< SPxRowId >	_decompCompPrimalRowIDs

DataArray< SPxColId >	_decompCompPrimalColIDs

int	_nDecompViolBounds

int	_nDecompViolRows

int *	_decompViolatedBounds

int *	_decompViolatedRows

int *	_fixedOrigVars

int	_nPrimalRows

int	_nPrimalCols

int	_nElimPrimalRows

int	_nDualRows

int	_nDualCols

int	_nCompPrimalRows

int	_nCompPrimalCols

int	_decompDisplayLine

NameSet *	_rowNames

NameSet *	_colNames

int	numIncludedRows

int	numDecompIter

int	numRedProbIter

int	numCompProbIter

int	numProbRows

int	numProbCols

int	numNonzeros

Real	minAbsNonzero

Real	maxAbsNonzero

int	origCountLower

int	origCountUpper

int	origCountBoxed

int	origCountFreeCol

int	origCountLhs

int	origCountRhs

int	origCountRanged

int	origCountFreeRow

decompStatus	_currentProb

Detailed Description

Preconfigured SoPlex LP-solver.

Definition at line 90 of file soplex.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

values for parameter OBJSENSE

Enumerator
OBJSENSE_MINIMIZE	minimization
OBJSENSE_MAXIMIZE	maximization

Definition at line 1004 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter RATIOTESTER

Enumerator
RATIOTESTER_TEXTBOOK	textbook ratio test without stabilization
RATIOTESTER_HARRIS	standard Harris ratio test
RATIOTESTER_FAST	modified Harris ratio test
RATIOTESTER_BOUNDFLIPPING	bound flipping ratio test for long steps in the dual simplex

Definition at line 1139 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter SYNCMODE

Enumerator
SYNCMODE_ONLYREAL	store only real LP
SYNCMODE_AUTO	automatic sync of real and rational LP
SYNCMODE_MANUAL	user sync of real and rational LP

Definition at line 1155 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter READMODE

Enumerator
READMODE_REAL	standard floating-point parsing
READMODE_RATIONAL	rational parsing

Definition at line 1168 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter SOLVEMODE

Enumerator
SOLVEMODE_REAL	apply standard floating-point algorithm
SOLVEMODE_AUTO	decide depending on tolerances whether to apply iterative refinement
SOLVEMODE_RATIONAL	force iterative refinement

Definition at line 1178 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter CHECKMODE

Enumerator
CHECKMODE_REAL	floating-point check
CHECKMODE_AUTO	decide according to READMODE
CHECKMODE_RATIONAL	rational check

Definition at line 1191 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter TIMER

Enumerator
TIMER_OFF	disable timing
TIMER_CPU	cpu or user time
TIMER_WALLCLOCK	wallclock time

Definition at line 1204 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter HYPER_PRICING

Enumerator
HYPER_PRICING_OFF	never
HYPER_PRICING_AUTO	decide according to problem size
HYPER_PRICING_ON	always

Definition at line 1217 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter SOLUTION_POLISHING

Enumerator
POLISHING_OFF	no solution polishing
POLISHING_MAXBASICSLACK	maximize number of basic slack variables, i.e. more variables on bounds
POLISHING_MINBASICSLACK	minimize number of basic slack variables, i.e. more variables between bounds

Definition at line 1230 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter REPRESENTATION

Enumerator
REPRESENTATION_AUTO	automatic choice according to number of rows and columns
REPRESENTATION_COLUMN	column representation Ax - s = 0, lower <= x <= upper, lhs <= s <= rhs
REPRESENTATION_ROW	row representation (lower,lhs) <= (x,Ax) <= (upper,rhs)

Definition at line 1014 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter ALGORITHM

Enumerator
ALGORITHM_PRIMAL	primal simplex algorithm, i.e., entering for column and leaving for row representation
ALGORITHM_DUAL	dual simplex algorithm, i.e., leaving for column and entering for row representation

Definition at line 1027 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter FACTOR_UPDATE_TYPE

Enumerator
FACTOR_UPDATE_TYPE_ETA	product form update
FACTOR_UPDATE_TYPE_FT	Forrest-Tomlin type update.

Definition at line 1037 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter VERBOSITY

Enumerator
VERBOSITY_ERROR	only error output
VERBOSITY_WARNING	only error and warning output
VERBOSITY_DEBUG	only error, warning, and debug output
VERBOSITY_NORMAL	standard verbosity level
VERBOSITY_HIGH	high verbosity level
VERBOSITY_FULL	full verbosity level

Definition at line 1047 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter SIMPLIFIER

Enumerator
SIMPLIFIER_OFF	no simplifier
SIMPLIFIER_AUTO	automatic choice

Definition at line 1069 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter SCALER

Enumerator
SCALER_OFF	no scaler
SCALER_UNIEQUI	equilibrium scaling on rows or columns
SCALER_BIEQUI	equilibrium scaling on rows and columns
SCALER_GEO1	geometric mean scaling on rows and columns, max 1 round
SCALER_GEO8	geometric mean scaling on rows and columns, max 8 rounds
SCALER_LEASTSQ	least square scaling

Definition at line 1079 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter STARTER

Enumerator
STARTER_OFF	slack basis
STARTER_WEIGHT	greedy crash basis weighted by objective, bounds, and sides
STARTER_SUM	crash basis from a greedy solution
STARTER_VECTOR	generic solution-based crash basis

Definition at line 1101 of file soplex.h.

◆ anonymous enum

anonymous enum

values for parameter PRICER

Enumerator
PRICER_AUTO	automatic pricer
PRICER_DANTZIG	Dantzig pricer.
PRICER_PARMULT	partial multiple pricer based on Dantzig pricing
PRICER_DEVEX	devex pricer
PRICER_QUICKSTEEP	steepest edge pricer with initialization to unit norms
PRICER_STEEP	steepest edge pricer with exact initialization of norms

Definition at line 1117 of file soplex.h.

◆ BoolParam

enum BoolParam

boolean parameters

Enumerator
LIFTING	should lifting be used to reduce range of nonzero matrix coefficients?
EQTRANS	should LP be transformed to equality form before a rational solve?
TESTDUALINF	should dual infeasibility be tested in order to try to return a dual solution even if primal infeasible?
RATFAC	should a rational factorization be performed after iterative refinement?
USEDECOMPDUALSIMPLEX	should the decomposition based dual simplex be used to solve the LP? Setting this to true forces the solve mode to SOLVEMODE_REAL and the basis representation to REPRESENTATION_ROW
COMPUTEDEGEN	should the degeneracy be computed for each basis?
USECOMPDUAL	should the dual of the complementary problem be used in the decomposition simplex?
EXPLICITVIOL	should row and bound violations be computed explicitly in the update of reduced problem in the decomposition simplex
ACCEPTCYCLING	should cycling solutions be accepted during iterative refinement?
RATREC	apply rational reconstruction after each iterative refinement?
POWERSCALING	round scaling factors for iterative refinement to powers of two?
RATFACJUMP	continue iterative refinement with exact basic solution if not optimal?
ROWBOUNDFLIPS	use bound flipping also for row representation?
PERSISTENTSCALING	use persistent scaling?
FULLPERTURBATION	perturb the entire problem or only the relevant bounds of s single pivot?
BOOLPARAM_COUNT	number of boolean parameters

Definition at line 860 of file soplex.h.

◆ decompStatus

enum decompStatus

private

Enumerator
DECOMP_ORIG
DECOMP_RED
DECOMP_COMP

Definition at line 1675 of file soplex.h.

◆ DualSign

enum DualSign

private

Enumerator
IS_POS
IS_NEG
IS_FREE

Definition at line 1688 of file soplex.h.

◆ IntParam

enum IntParam

integer parameters

Enumerator
OBJSENSE	objective sense
REPRESENTATION	type of computational form, i.e., column or row representation
ALGORITHM	type of algorithm, i.e., primal or dual
FACTOR_UPDATE_TYPE	type of LU update
FACTOR_UPDATE_MAX	maximum number of updates without fresh factorization
ITERLIMIT	iteration limit (-1 if unlimited)
REFLIMIT	refinement limit (-1 if unlimited)
STALLREFLIMIT	stalling refinement limit (-1 if unlimited)
DISPLAYFREQ	display frequency
VERBOSITY	verbosity level
SIMPLIFIER	type of simplifier
SCALER	type of scaler
STARTER	type of starter used to create crash basis
PRICER	type of pricer
RATIOTESTER	type of ratio test
SYNCMODE	mode for synchronizing real and rational LP
READMODE	mode for reading LP files
SOLVEMODE	mode for iterative refinement strategy
CHECKMODE	mode for a posteriori feasibility checks
TIMER	type of timer
HYPER_PRICING	mode for hyper sparse pricing
RATFAC_MINSTALLS	minimum number of stalling refinements since last pivot to trigger rational factorization
LEASTSQ_MAXROUNDS	maximum number of conjugate gradient iterations in least square scaling
SOLUTION_POLISHING	mode for solution polishing
DECOMP_ITERLIMIT	the number of iterations before the decomposition simplex initialisation is terminated.
DECOMP_MAXADDEDROWS	the maximum number of rows that are added in each iteration of the decomposition based simplex
DECOMP_DISPLAYFREQ	the iteration frequency at which the decomposition solve output is displayed.
DECOMP_VERBOSITY	the verbosity of the decomposition based simplex
INTPARAM_COUNT	number of integer parameters

Definition at line 913 of file soplex.h.

◆ RangeType

enum RangeType

private

type of bounds and sides

Enumerator
RANGETYPE_FREE	both bounds are infinite
RANGETYPE_LOWER	lower bound is finite, upper bound is infinite
RANGETYPE_UPPER	upper bound is finite, lower bound is infinite
RANGETYPE_BOXED	lower and upper bound finite, but different
RANGETYPE_FIXED	lower bound equals upper bound

Definition at line 1616 of file soplex.h.

◆ RealParam

enum RealParam

real parameters

Enumerator
FEASTOL	primal feasibility tolerance
OPTTOL	dual feasibility tolerance
EPSILON_ZERO	general zero tolerance
EPSILON_FACTORIZATION	zero tolerance used in factorization
EPSILON_UPDATE	zero tolerance used in update of the factorization
EPSILON_PIVOT	pivot zero tolerance used in factorization
INFTY	infinity threshold
TIMELIMIT	time limit in seconds (INFTY if unlimited)
OBJLIMIT_LOWER	lower limit on objective value
OBJLIMIT_UPPER	upper limit on objective value
FPFEASTOL	working tolerance for feasibility in floating-point solver during iterative refinement
FPOPTTOL	working tolerance for optimality in floating-point solver during iterative refinement
MAXSCALEINCR	maximum increase of scaling factors between refinements
LIFTMINVAL	lower threshold in lifting (nonzero matrix coefficients with smaller absolute value will be reformulated)
LIFTMAXVAL	upper threshold in lifting (nonzero matrix coefficients with larger absolute value will be reformulated)
SPARSITY_THRESHOLD	sparse pricing threshold (#violations < dimension * SPARSITY_THRESHOLD activates sparse pricing)
REPRESENTATION_SWITCH	threshold on number of rows vs. number of columns for switching from column to row representations in auto mode
RATREC_FREQ	geometric frequency at which to apply rational reconstruction
MINRED	minimal reduction (sum of removed rows/cols) to continue simplification
REFAC_BASIS_NNZ	refactor threshold for nonzeros in last factorized basis matrix compared to updated basis matrix
REFAC_UPDATE_FILL	refactor threshold for fill-in in current factor update compared to fill-in in last factorization
REFAC_MEM_FACTOR	refactor threshold for memory growth in factorization since last refactorization
LEASTSQ_ACRCY	accuracy of conjugate gradient method in least squares scaling (higher value leads to more iterations)
OBJ_OFFSET	objective offset
REALPARAM_COUNT	number of real parameters

Definition at line 1243 of file soplex.h.

Constructor & Destructor Documentation

◆ SoPlex() [1/2]

◆ SoPlex() [2/2]

SoPlex ( const SoPlex & rhs )

copy constructor

Todo:: improve performance by implementing a separate copy constructor

Definition at line 725 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::_statistics, and soplex::spx_alloc().

◆ ~SoPlex()

~SoPlex ( )

virtual

destructor

Definition at line 743 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::_isConsistent(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_solver, SoPlex::_statistics, SoPlex::_unitMatrixRational, soplex::spx_free(), and SoPlex::Statistics::~Statistics().

Referenced by main().

Member Function Documentation

◆ _addColReal() [1/2]

void _addColReal ( const LPColReal & lpcol )

private

adds a single column to the real LP and adjusts basis

Definition at line 7323 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxLPBase< R >::addCol(), DataArray< T >::append(), SPxSolver::basis(), SLUFactorRational::clear(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), LPColBase< R >::lower(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), LPColBase< R >::upper(), and SPxSolver::ZERO.

Referenced by SoPlex::addColRational(), and SoPlex::addColReal().

◆ _addColReal() [2/2]

void _addColReal	(	Real	obj,
		Real	lower,
		const SVectorReal &	lpcol,
		Real	upper
	)

private

adds a single column to the real LP and adjusts basis

Definition at line 7348 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxLPBase< R >::addCol(), DataArray< T >::append(), SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, and SPxBasis::status().

◆ _addColsReal()

void _addColsReal ( const LPColSetReal & lpcolset )

private

adds multiple columns to the real LP and adjusts basis

Definition at line 7366 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxLPBase< R >::addCols(), DataArray< T >::append(), SPxSolver::basis(), SLUFactorRational::clear(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), LPColSetBase< R >::lower(), SPxBasis::NO_PROBLEM, LPColSetBase< R >::num(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), LPColSetBase< R >::upper(), and SPxSolver::ZERO.

Referenced by SoPlex::addColRational(), SoPlex::addColsRational(), and SoPlex::addColsReal().

◆ _addRowReal() [1/2]

void _addRowReal ( const LPRowReal & lprow )

private

adds a single row to the real LP and adjusts basis

Definition at line 7270 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxLPBase< R >::addRow(), DataArray< T >::append(), SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, and SPxBasis::status().

Referenced by SoPlex::addRowRational(), and SoPlex::addRowReal().

◆ _addRowReal() [2/2]

void _addRowReal	(	Real	lhs,
		const SVectorReal &	lprow,
		Real	rhs
	)

private

adds a single row to the real LP and adjusts basis

Definition at line 7288 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxLPBase< R >::addRow(), DataArray< T >::append(), SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, and SPxBasis::status().

◆ _addRowsReal()

void _addRowsReal ( const LPRowSetReal & lprowset )

private

adds multiple rows to the real LP and adjusts basis

Definition at line 7306 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxLPBase< R >::addRows(), DataArray< T >::append(), SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, LPRowSetBase< R >::num(), and SPxBasis::status().

Referenced by SoPlex::addRowRational(), SoPlex::addRowsRational(), and SoPlex::addRowsReal().

◆ _changeBoundsReal() [1/2]

void _changeBoundsReal	(	const VectorReal &	lower,
		const VectorReal &	upper
	)

private

changes vectors of column bounds to lower and upper and adjusts basis

Definition at line 7661 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeBounds(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SoPlex::numColsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

Referenced by SoPlex::changeBoundsRational(), and SoPlex::changeBoundsReal().

◆ _changeBoundsReal() [2/2]

void _changeBoundsReal	(	int	i,
		const Real &	lower,
		const Real &	upper
	)

private

changes bounds of column i to lower and upper and adjusts basis

Definition at line 7687 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeBounds(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

◆ _changeColReal()

void _changeColReal	(	int	i,
		const LPColReal &	lpcol
	)

private

replaces column i with lpcol and adjusts basis

Definition at line 7550 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SPxLPBase< R >::changeCol(), SLUFactorRational::clear(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), LPColBase< R >::lower(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), LPColBase< R >::upper(), and SPxSolver::ZERO.

Referenced by SoPlex::changeColRational(), and SoPlex::changeColReal().

◆ _changeElementReal()

void _changeElementReal	(	int	i,
		int	j,
		const Real &	val
	)

private

changes matrix entry in row i and column j to val and adjusts basis

Definition at line 7710 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SPxLPBase< R >::changeElement(), SLUFactorRational::clear(), SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, and SPxBasis::status().

Referenced by SoPlex::changeElementRational(), and SoPlex::changeElementReal().

◆ _changeLhsReal() [1/2]

void _changeLhsReal ( const VectorReal & lhs )

private

changes left-hand side vector for constraints to lhs and adjusts basis

Definition at line 7418 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeLhs(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SoPlex::numRowsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SoPlex::rhsReal(), SPxBasis::status(), and SPxSolver::ZERO.

Referenced by SoPlex::changeLhsRational(), and SoPlex::changeLhsReal().

◆ _changeLhsReal() [2/2]

void _changeLhsReal	(	int	i,
		const Real &	lhs
	)

private

changes left-hand side of row i to lhs and adjusts basis

Definition at line 7440 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeLhs(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SoPlex::rhsReal(), SPxBasis::status(), and SPxSolver::ZERO.

◆ _changeLowerReal() [1/2]

void _changeLowerReal ( const VectorReal & lower )

private

changes vector of lower bounds to lower and adjusts basis

Definition at line 7577 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeLower(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SoPlex::numColsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), SoPlex::upperReal(), and SPxSolver::ZERO.

Referenced by SoPlex::changeLowerRational(), and SoPlex::changeLowerReal().

◆ _changeLowerReal() [2/2]

void _changeLowerReal	(	int	i,
		const Real &	lower
	)

private

changes lower bound of column i to lower and adjusts basis

Definition at line 7601 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeLower(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), SoPlex::upperReal(), and SPxSolver::ZERO.

◆ _changeRangeReal() [1/2]

void _changeRangeReal	(	const VectorReal &	lhs,
		const VectorReal &	rhs
	)

private

changes left- and right-hand side vectors and adjusts basis

Definition at line 7501 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeRange(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SoPlex::numRowsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

Referenced by SoPlex::changeRangeRational(), and SoPlex::changeRangeReal().

◆ _changeRangeReal() [2/2]

void _changeRangeReal	(	int	i,
		const Real &	lhs,
		const Real &	rhs
	)

private

changes left- and right-hand side of row i and adjusts basis

Definition at line 7527 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeRange(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

◆ _changeRhsReal() [1/2]

void _changeRhsReal ( const VectorReal & rhs )

private

changes right-hand side vector to rhs and adjusts basis

Definition at line 7459 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeRhs(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SoPlex::lhsReal(), SPxBasis::NO_PROBLEM, SoPlex::numRowsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

Referenced by SoPlex::changeRhsRational(), and SoPlex::changeRhsReal().

◆ _changeRhsReal() [2/2]

void _changeRhsReal	(	int	i,
		const Real &	rhs
	)

private

changes right-hand side of row i to rhs and adjusts basis

Definition at line 7483 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeRhs(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SoPlex::lhsReal(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

◆ _changeRowReal()

void _changeRowReal	(	int	i,
		const LPRowReal &	lprow
	)

private

replaces row i with lprow and adjusts basis

Definition at line 7393 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SPxLPBase< R >::changeRow(), SLUFactorRational::clear(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), LPRowBase< R >::lhs(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), LPRowBase< R >::rhs(), SPxBasis::status(), and SPxSolver::ZERO.

Referenced by SoPlex::changeRowRational(), and SoPlex::changeRowReal().

◆ _changeUpperReal() [1/2]

void _changeUpperReal ( const VectorReal & upper )

private

changes vector of upper bounds to upper and adjusts basis

Definition at line 7619 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeUpper(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SoPlex::lowerReal(), SPxBasis::NO_PROBLEM, SoPlex::numColsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

Referenced by SoPlex::changeUpperRational(), and SoPlex::changeUpperReal().

◆ _changeUpperReal() [2/2]

void _changeUpperReal	(	int	i,
		const Real &	upper
	)

private

changes i 'th upper bound to upper and adjusts basis

Definition at line 7643 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeUpper(), SoPlex::INFTY, SPxLPBase< R >::isScaled(), SoPlex::lowerReal(), SPxBasis::NO_PROBLEM, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), SPxBasis::status(), and SPxSolver::ZERO.

◆ _checkBasisScaling()

void _checkBasisScaling ( )

private

check correctness of (un)scaled basis matrix operations

Definition at line 89 of file testsoplex.cpp.

References SoPlex::_realLP, SoPlex::_solver, SoPlex::_status, VectorBase< R >::clear(), SPxSolver::COLUMN, SPxSolver::feastol(), VectorBase< R >::get_ptr(), SoPlex::getBasisInverseColReal(), SoPlex::getBasisInverseRowReal(), SPxLPBase< R >::isScaled(), MSG_INFO1, SoPlex::multBasis(), SoPlex::multBasisTranspose(), soplex::NE(), SPxLPBase< R >::nRows(), SPxSolver::OPTIMAL, SPxSolver::rep(), SPxSolver::ROW, soplex::spx_alloc(), soplex::spx_free(), soplex::spxAbs(), SoPlex::spxout, and SPxSolver::unscaleLPandReloadBasis().

Referenced by SoPlex::optimize().

◆ _checkOriginalProblemOptimality()

void _checkOriginalProblemOptimality	(	Vector	primalVector,
		bool	printViol
	)

private

checking the optimality of the original problem.

Definition at line 2691 of file solvedbds.cpp.

References SoPlex::_decompTransBasis, SoPlex::_hasSolReal, SolBase< R >::_isPrimalFeasible, SolBase< R >::_primal, SoPlex::_realLP, SoPlex::_solReal, SoPlex::_solver, SoPlex::_statistics, SPxBasis::coSolve(), SoPlex::getDecompBoundViolation(), SoPlex::getDecompRowViolation(), SoPlex::Statistics::maxBoundViol, SPxLPBase< R >::maxObj(), SoPlex::Statistics::maxRowViol, MSG_INFO1, SPxLPBase< R >::nCols(), DVectorBase< R >::reDim(), SoPlex::spxout, SoPlex::Statistics::totalBoundViol, SoPlex::Statistics::totalRowViol, and SSVectorBase< R >::unSetup().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _checkScaling()

void _checkScaling ( SPxLPReal * origLP ) const

private

◆ _completeRangeTypesRational()

void _completeRangeTypesRational ( )

private

completes range type arrays after adding columns and/or rows

Definition at line 8169 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, DataArray< T >::append(), SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), SoPlex::numColsRational(), SoPlex::numRowsRational(), SPxLPBase< R >::rhs(), DataArray< T >::size(), and SPxLPBase< R >::upper().

Referenced by SoPlex::addColRational(), SoPlex::addColReal(), SoPlex::addColsRational(), SoPlex::addColsReal(), SoPlex::addRowRational(), SoPlex::addRowReal(), SoPlex::addRowsRational(), SoPlex::addRowsReal(), SoPlex::changeColRational(), SoPlex::changeColReal(), SoPlex::changeRowRational(), and SoPlex::changeRowReal().

◆ _computeBasisInverseRational()

void _computeBasisInverseRational ( )

private

computes rational inverse of basis matrix as defined by _rationalLUSolverBind

Definition at line 3518 of file solverational.cpp.

References SoPlex::_rationalLUSolver, SoPlex::_rationalLUSolverBind, SoPlex::_statistics, SoPlex::_unitVectorRational(), SoPlex::colVectorRational(), SLUFactorRational::getFactorCount(), SLUFactorRational::getFactorTime(), SoPlex::INFTY, SLUFactorRational::load(), SoPlex::Statistics::luFactorizationsRational, SoPlex::Statistics::luFactorizationTimeRational, MSG_INFO1, MSG_INFO2, SoPlex::numColsRational(), SoPlex::numRowsRational(), SLinSolverRational::OK, SoPlex::realParam(), SLUFactorRational::resetCounters(), DataArray< T >::reSize(), SLUFactorRational::setTimeLimit(), DataArray< T >::size(), SoPlex::Statistics::solvingTime, SoPlex::spxout, SLUFactorRational::status(), SLinSolverRational::TIME, Timer::time(), SoPlex::TIMELIMIT, and SLinSolverRational::UNLOADED.

Referenced by SoPlex::_factorizeColumnRational(), and SoPlex::computeBasisInverseRational().

◆ _computeInfeasBox()

void _computeInfeasBox	(	SolRational &	sol,
		bool	transformed
	)

private

computes radius of infeasibility box implied by an approximate Farkas' proof

Given constraints of the form \( lhs <= Ax <= rhs \), a farkas proof y should satisfy \( y^T A = 0 \) and \( y_+^T lhs - y_-^T rhs > 0 \), where \( y_+, y_- \) denote the positive and negative parts of \( y \). If \( y \) is approximate, it may not satisfy \( y^T A = 0 \) exactly, but the proof is still valid as long as the following holds for all potentially feasible \( x \):

\[ y^T Ax < (y_+^T lhs - y_-^T rhs) (*) \]

we may therefore calculate \( y^T A \) and \( y_+^T lhs - y_-^T rhs \) exactly and check if the upper and lower bounds on \( x \) imply that all feasible \( x \) satisfy (*), and if not then compute bounds on \( x \) to guarantee (*). The simplest way to do this is to compute

\[ B = (y_+^T lhs - y_-^T rhs) / \sum_i(|(y^T A)_i|) \]

noting that if every component of \( x \) has \( |x_i| < B \), then (*) holds.

\( B \) can be increased by iteratively including variable bounds smaller than \( B \). The speed of this method can be further improved by using interval arithmetic for all computations. For related information see Sec. 4 of Neumaier and Shcherbina, Mathematical Programming A, 2004.

Set transformed to true if this method is called after _transformFeasibility().

Todo:: this currently works only if all constraints are equations aggregate rows and sides using the multipliers of the Farkas ray

Definition at line 2853 of file solverational.cpp.

Referenced by SoPlex::_performFeasIRStable().

◆ _computeReducedProbObjCoeff()

void _computeReducedProbObjCoeff ( bool & stop )

private

computes the reduced problem objective coefficients

Definition at line 1792 of file solvedbds.cpp.

References SoPlex::_decompLP, SoPlex::_solver, SoPlex::_transformedObj, SPxSolver::basis(), SPxLPBase< R >::changeObj(), SoPlex::decompTerminate(), SoPlex::EPSILON_ZERO, SoPlex::FEASTOL, SSVectorBase< R >::index(), SSVectorBase< R >::isSetup(), soplex::isZero(), SPxLPBase< R >::maxObj(), MSG_ERROR, SoPlex::numColsReal(), SoPlex::realParam(), DVectorBase< R >::reDim(), SSVectorBase< R >::size(), SPxBasis::solve(), SoPlex::spxout, SoPlex::TIMELIMIT, TIMELIMIT_FRAC, SSVectorBase< R >::unSetup(), SSVectorBase< R >::value(), and SPxException::what().

Referenced by SoPlex::_formDecompReducedProblem().

◆ _createDecompReducedAndComplementaryProblems()

void _createDecompReducedAndComplementaryProblems ( )

private

creating copies of the original problem that will be manipulated to form the reduced and complementary problems

Definition at line 591 of file solvedbds.cpp.

References SoPlex::_compSlufactor, SoPlex::_compSolver, SoPlex::_decompReducedProbCols, SoPlex::_decompReducedProbRows, SoPlex::_decompViolatedBounds, SoPlex::_decompViolatedRows, SoPlex::_nDecompViolBounds, SoPlex::_nDecompViolRows, SoPlex::_realLP, SoPlex::_solver, SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::setBasisSolver(), SPxSolver::setOutstream(), soplex::spx_alloc(), and SoPlex::spxout.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _decompResolveWithoutPreprocessing()

void _decompResolveWithoutPreprocessing	(	SPxSolver &	solver,
		SLUFactor &	sluFactor,
		SPxSimplifier::Result	result
	)

private

loads original problem into solver and solves again after it has been solved to optimality with preprocessing

Definition at line 1031 of file solvedbds.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_decompLP, SoPlex::_decompSimplifyAndSolve(), SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_scaler, SoPlex::_simplifier, SoPlex::_status, SPxSolver::ABORT_DECOMP, SPxSolver::ABORT_EXDECOMP, SPxSolver::ERROR, DataArray< T >::get_ptr(), SPxSimplifier::getBasis(), SPxSolver::getBasis(), SPxSolver::getDual(), SPxSolver::getPrimal(), SPxSolver::getRedCost(), SPxSolver::getSlacks(), SPxLPBase< R >::isScaled(), SPxSimplifier::isUnsimplified(), MSG_ERROR, SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSimplifier::OKAY, SPxSolver::OPTIMAL, DataArray< T >::reSize(), DataArray< T >::size(), SoPlex::spxout, SPxSolver::status(), SPxScaler::unscaleDual(), SPxScaler::unscalePrimal(), SPxScaler::unscaleRedCost(), SPxScaler::unscaleSlacks(), SPxSimplifier::unsimplify(), SPxSimplifier::VANISHED, and SPxException::what().

Referenced by SoPlex::_evaluateSolutionDecomp().

◆ _decompSimplifyAndSolve()

void _decompSimplifyAndSolve	(	SPxSolver &	solver,
		SLUFactor &	sluFactor,
		bool	fromScratch,
		bool	applyPreprocessing
	)

private

simplifies the problem and solves

Todo:: implement for both objective senses

Todo:: this should not fail even if the basis is invalid (wrong dimension or wrong number of basic entries); fix either in SPxSolver or in SPxBasis

Definition at line 859 of file solvedbds.cpp.

Referenced by SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_evaluateSolutionDecomp(), and SoPlex::_solveDecompositionDualSimplex().

◆ _deleteAndUpdateRowsComplementaryProblem()

void _deleteAndUpdateRowsComplementaryProblem	(	SPxRowId	rangedRowIds[],
		int &	naddedrows
	)

private

removing rows from the complementary problem.

Definition at line 1998 of file solvedbds.cpp.

References SoPlex::_compSlackColId, SoPlex::_compSolver, SoPlex::_realLP, LPColSetBase< R >::add(), LPRowSetBase< R >::add(), SPxLPBase< R >::addCols(), SPxLPBase< R >::addRows(), SoPlex::boolParam(), SPxSolver::changeBounds(), SPxSolver::changeLhs(), SPxSolver::changeObj(), SPxLPBase< R >::cId(), soplex::GT(), soplex::infinity, SPxLPBase< R >::lhs(), soplex::LT(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxLPBase< R >::rhs(), SPxLPBase< R >::rowType(), SPxLPBase< R >::rowVector(), soplex::spx_alloc(), soplex::spx_free(), and SoPlex::USECOMPDUAL.

Referenced by SoPlex::_formDecompComplementaryProblem().

◆ _disableSimplifierAndScaler()

void _disableSimplifierAndScaler ( )

private

disables simplifier and scaler

Definition at line 7922 of file soplex.cpp.

References SoPlex::_isRealLPScaled, SoPlex::_scaler, SoPlex::_simplifier, SoPlex::boolParam(), and SoPlex::PERSISTENTSCALING.

Referenced by SoPlex::_decompSimplifyAndSolve(), SoPlex::_preprocessAndSolveReal(), and SoPlex::_solveRealForRational().

◆ _enableSimplifierAndScaler()

void _enableSimplifierAndScaler ( )

private

enables simplifier and scaler according to current parameters

enables simplifier and scaler

Definition at line 7876 of file soplex.cpp.

References SoPlex::_scaler, SoPlex::_scalerBiequi, SoPlex::_scalerGeo1, SoPlex::_scalerGeo8, SoPlex::_scalerLeastsq, SoPlex::_scalerUniequi, SoPlex::_simplifier, SoPlex::_simplifierMainSM, SoPlex::intParam(), SoPlex::MINRED, SoPlex::realParam(), SoPlex::SCALER, SoPlex::SCALER_BIEQUI, SoPlex::SCALER_GEO1, SoPlex::SCALER_GEO8, SoPlex::SCALER_LEASTSQ, SoPlex::SCALER_OFF, SoPlex::SCALER_UNIEQUI, SPxSimplifier::setMinReduction(), SoPlex::SIMPLIFIER, SoPlex::SIMPLIFIER_AUTO, and SoPlex::SIMPLIFIER_OFF.

Referenced by SoPlex::_decompSimplifyAndSolve(), SoPlex::_preprocessAndSolveReal(), and SoPlex::_solveRealForRational().

◆ _ensureDSVectorRationalMemory()

void _ensureDSVectorRationalMemory	(	DSVectorRational &	vec,
		const int	newmax
	)		const

private

extends sparse vector to hold newmax entries if and only if it holds no more free entries

Definition at line 7107 of file soplex.cpp.

References SVectorBase< R >::max(), DSVectorBase< R >::setMax(), and SVectorBase< R >::size().

Referenced by SoPlex::_performOptIRStable().

◆ _ensureRationalLP()

void _ensureRationalLP ( )

private

ensures that the rational LP is available; performs no sync

Definition at line 7936 of file soplex.cpp.

References SoPlex::_rationalLP, SPxLPBase< R >::setOutstream(), soplex::spx_alloc(), and SoPlex::spxout.

Referenced by SoPlex::_readFileRational(), SoPlex::_syncLPRational(), and SoPlex::setIntParam().

◆ _ensureRealLPLoaded()

void _ensureRealLPLoaded ( )

private

ensures that the real LP and the basis are loaded in the solver; performs no sync

Todo:: this should not fail even if the basis is invalid (wrong dimension or wrong number of basic entries); fix either in SPxSolver or in SPxBasis

Definition at line 7949 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), DataArray< T >::get_const_ptr(), SPxSolver::loadLP(), SPxBasis::NO_PROBLEM, SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::setBasis(), DataArray< T >::size(), soplex::spx_free(), and SPxBasis::status().

Referenced by SoPlex::getBasisInverseColReal(), SoPlex::getBasisInverseRowReal(), SoPlex::getBasisInverseTimesVecReal(), SoPlex::getEstimatedCondition(), SoPlex::getExactCondition(), SoPlex::multBasis(), and SoPlex::multBasisTranspose().

◆ _evaluateSolutionDecomp()

void _evaluateSolutionDecomp	(	SPxSolver &	solver,
		SLUFactor &	sluFactor,
		SPxSimplifier::Result	result
	)

private

evaluates the solution of the reduced problem for the DBDS

checks result of the solving process and solves again without preprocessing if necessary

Definition at line 3225 of file solvedbds.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_currentProb, SoPlex::_decompLP, SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_simplifier, SoPlex::_status, SPxSolver::ABORT_CYCLING, SPxSolver::ABORT_DECOMP, SPxSolver::ABORT_EXDECOMP, SPxSolver::ABORT_ITER, SPxSolver::ABORT_TIME, SPxSolver::ABORT_VALUE, SPxSolver::basis(), SPxLPBase< R >::changeObjOffset(), SoPlex::DECOMP_ORIG, SoPlex::DECOMP_RED, SPxSimplifier::DUAL_INFEASIBLE, DataArray< T >::get_ptr(), SPxSolver::getBasis(), SPxSimplifier::INFEASIBLE, SPxSolver::INFEASIBLE, SPxSolver::INForUNBD, SPxLPBase< R >::nCols(), SPxBasis::NO_PROBLEM, SPxLPBase< R >::nRows(), SoPlex::OBJ_OFFSET, SPxSimplifier::OKAY, SPxSolver::OPTIMAL, SoPlex::realParam(), SPxSolver::REGULAR, DataArray< T >::reSize(), SPxSolver::RUNNING, SPxSolver::SINGULAR, DataArray< T >::size(), SPxBasis::status(), SPxSolver::status(), SPxSimplifier::UNBOUNDED, SPxSolver::UNBOUNDED, SPxSolver::UNKNOWN, and SPxSimplifier::VANISHED.

Referenced by SoPlex::_decompSimplifyAndSolve().

◆ _evaluateSolutionReal()

void _evaluateSolutionReal ( SPxSimplifier::Result simplificationStatus )

private

checks result of the solving process and solves again without preprocessing if necessary

Definition at line 93 of file solvereal.cpp.

References SoPlex::_applyPolishing, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_isRealLPScaled, SoPlex::_preprocessAndSolveReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solver, SoPlex::_status, SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SPxSolver::ABORT_CYCLING, SPxSolver::ABORT_ITER, SPxSolver::ABORT_TIME, SPxSolver::ABORT_VALUE, SPxLPBase< R >::changeObjOffset(), SPxSimplifier::DUAL_INFEASIBLE, SPxSimplifier::INFEASIBLE, SPxSolver::INFEASIBLE, SPxSolver::INForUNBD, SoPlex::intParam(), MSG_INFO1, MSG_INFO3, SoPlex::OBJ_OFFSET, SPxSimplifier::OKAY, SPxSolver::OPTIMAL, SoPlex::realParam(), SPxSolver::REGULAR, SPxSolver::RUNNING, SoPlex::setIntParam(), SPxSolver::SINGULAR, SoPlex::SOLUTION_POLISHING, SoPlex::spxout, SPxSolver::status(), SPxSimplifier::UNBOUNDED, SPxSolver::UNBOUNDED, and SPxSimplifier::VANISHED.

Referenced by SoPlex::_preprocessAndSolveReal().

◆ _factorizeColumnRational()

void _factorizeColumnRational	(	SolRational &	sol,
		DataArray< SPxSolver::VarStatus > &	basisStatusRows,
		DataArray< SPxSolver::VarStatus > &	basisStatusCols,
		bool &	stoppedTime,
		bool &	stoppedIter,
		bool &	error,
		bool &	optimal
	)

private

factorizes rational basis matrix in column representation

Definition at line 3571 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SoPlex::_computeBasisInverseRational(), SolBase< R >::_dual, SoPlex::_hasBasis, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_isSolveStopped(), SolBase< R >::_primal, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalLUSolverBind, SolBase< R >::_redCost, SoPlex::_rowTypes, SolBase< R >::_slacks, SoPlex::_statistics, SoPlex::_workSol, SPxSolver::BASIC, SoPlex::boolParam(), SoPlex::colVectorRational(), SPxLPBase< R >::computePrimalActivity(), SLUFactorRational::dim(), SPxSolver::FIXED, SLUFactorRational::getSolveTime(), SoPlex::INFTY, SoPlex::intParam(), SoPlex::lhsRational(), SoPlex::lowerRational(), SoPlex::Statistics::luSolveTimeRational, MSG_DEBUG, MSG_INFO1, MSG_INFO2, MSG_WARNING, VectorBase< R >::multAdd(), SoPlex::numColsRational(), SoPlex::numRowsRational(), SoPlex::objRational(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SLinSolverRational::OK, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::RANGETYPE_FIXED, SoPlex::RATFACJUMP, SoPlex::Statistics::rationalTime, soplex::rationalToString(), SoPlex::realParam(), DVectorBase< R >::reDim(), SLUFactorRational::resetCounters(), DataArray< T >::reSize(), SoPlex::rhsRational(), SLUFactorRational::setTimeLimit(), DataArray< T >::size(), SLUFactorRational::solveLeft(), SLUFactorRational::solveRight(), SoPlex::Statistics::solvingTime, SoPlex::spxout, Timer::start(), SLUFactorRational::status(), Timer::stop(), SLinSolverRational::TIME, Timer::time(), SoPlex::TIMELIMIT, SPxSolver::UNDEFINED, SLinSolverRational::UNLOADED, SoPlex::upperRational(), and SPxSolver::ZERO.

Referenced by SoPlex::_performOptIRStable().

◆ _findViolatedRows()

void _findViolatedRows	(	Real	compObjValue,
		DataArray< RowViolation > &	violatedrows,
		int &	nviolatedrows
	)

private

builds the update rows with those violated in the complmentary problem

Definition at line 1460 of file solvedbds.cpp.

References SoPlex::_compSlackColId, SoPlex::_compSolver, SoPlex::_decompDualColIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_nPrimalRows, SoPlex::_realLP, SoPlex::boolParam(), SPxLPBase< R >::computePrimalActivity(), SoPlex::FEASTOL, SoPlex::getCompSlackVarCoeff(), SPxSolver::getPrimal(), SPxSolver::getRedCost(), SPxLPBase< R >::lhs(), soplex::LT(), SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SPxLPBase< R >::number(), SoPlex::numIncludedRows, SoPlex::realParam(), SPxLPBase< R >::rhs(), soplex::spxAbs(), and SoPlex::USECOMPDUAL.

Referenced by SoPlex::_updateDecompReducedProblem().

◆ _formDecompComplementaryProblem()

void _formDecompComplementaryProblem ( )

private

forms the complementary problem

Definition at line 720 of file solvedbds.cpp.

References SoPlex::_compSlackColId, SoPlex::_compSlackDualRowId, SoPlex::_compSolver, SoPlex::_decompCompPrimalColIDs, SoPlex::_decompCompPrimalRowIDs, SoPlex::_decompCompProbColIDsIdx, SoPlex::_decompDualColIDs, SoPlex::_decompDualRowIDs, SoPlex::_decompElimPrimalRowIDs, SoPlex::_decompFixedVarDualIDs, SoPlex::_decompPrimalColIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_decompVarBoundDualIDs, SoPlex::_deleteAndUpdateRowsComplementaryProblem(), SoPlex::_fixedOrigVars, SoPlex::_nCompPrimalCols, SoPlex::_nCompPrimalRows, SoPlex::_nDualCols, SoPlex::_nDualRows, SoPlex::_nElimPrimalRows, SoPlex::_nPrimalCols, SoPlex::_nPrimalRows, SoPlex::_realLP, SoPlex::_updateComplementaryDualSlackColCoeff(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), SoPlex::boolParam(), SPxLPBase< R >::buildDualProblem(), SPxLPBase< R >::cId(), soplex::EQ(), DataArray< T >::get_ptr(), DataKey::getIdx(), soplex::infinity, SPxSolver::init(), soplex::LE(), SPxLPBase< R >::lhs(), SPxSolver::loadLP(), soplex::LT(), SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SPxLPBase< R >::number(), SoPlex::numRowsReal(), SPxLPBase< R >::rhs(), SPxLPBase< R >::rId(), SPxLPBase< R >::rowType(), SPxLPBase< R >::setOutstream(), soplex::spx_alloc(), SoPlex::spxout, and SoPlex::USECOMPDUAL.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _formDecompReducedProblem()

void _formDecompReducedProblem ( bool & stop )

private

forms the reduced problem

Definition at line 624 of file solvedbds.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_computeReducedProbObjCoeff(), SoPlex::_decompFeasVector, SoPlex::_decompLP, SoPlex::_decompReducedProbColRowIDs, SoPlex::_decompTransBasis, SoPlex::_getCompatibleBoundCons(), SoPlex::_getCompatibleColumns(), SoPlex::_getZeroDualMultiplierIndices(), SoPlex::_solver, SPxLPBase< R >::addRows(), SPxSolver::basis(), DataArray< T >::get_ptr(), SPxSolver::getBasis(), SPxSolver::loadLP(), MSG_INFO2, SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SoPlex::numColsReal(), SoPlex::numIncludedRows, SoPlex::numRowsReal(), SPxLPBase< R >::removeRows(), DataArray< T >::reSize(), SoPlex::solveTime(), soplex::spx_alloc(), soplex::spx_free(), and SoPlex::spxout.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _getCompatibleBoundCons()

void _getCompatibleBoundCons	(	LPRowSet &	boundcons,
		int *	compatboundcons,
		int *	nonposind,
		int *	ncompatboundcons,
		int	nnonposind,
		bool &	stop
	)

private

computes the compatible bound constraints and adds them to the reduced problem

Definition at line 1858 of file solvedbds.cpp.

References SoPlex::_decompLP, SoPlex::_decompReducedProbColRowIDs, SoPlex::_solver, SoPlex::_transformedRows, DSVectorBase< R >::add(), LPRowSetBase< R >::add(), SPxSolver::basis(), SPxLPBase< R >::changeLower(), SPxLPBase< R >::changeUpper(), SoPlex::decompTerminate(), SoPlex::EPSILON_ZERO, SoPlex::FEASTOL, soplex::GT(), SSVectorBase< R >::index(), soplex::infinity, SSVectorBase< R >::isSetup(), soplex::isZero(), SPxLPBase< R >::lower(), soplex::LT(), MSG_ERROR, SoPlex::numColsReal(), SoPlex::realParam(), SSVectorBase< R >::size(), SPxBasis::solve(), SoPlex::spxout, SoPlex::TIMELIMIT, TIMELIMIT_FRAC, SPxSolver::unitVector(), SSVectorBase< R >::unSetup(), SPxLPBase< R >::upper(), SSVectorBase< R >::value(), and SPxException::what().

Referenced by SoPlex::_formDecompReducedProblem().

◆ _getCompatibleColumns()

void _getCompatibleColumns	(	Vector	feasVector,
		int *	nonposind,
		int *	compatind,
		int *	rowsforremoval,
		int *	colsforremoval,
		int	nnonposind,
		int *	ncompatind,
		bool	formRedProb,
		bool &	stop
	)

private

retrieves the compatible columns from the constraint matrix

Definition at line 1632 of file solvedbds.cpp.

References SoPlex::_decompLP, SoPlex::_decompReducedProbColRowIDs, SoPlex::_decompReducedProbRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_realLP, SoPlex::_solver, SoPlex::_transformedRows, DSVectorBase< R >::add(), LPRowSetBase< R >::add(), SPxBasis::baseId(), SPxSolver::basis(), SPxLPBase< R >::changeRow(), SoPlex::decompTerminate(), SoPlex::EPSILON_ZERO, soplex::EQ(), SoPlex::FEASTOL, SPxLPBase< R >::getRow(), SPxId::isSPxRowId(), soplex::isZero(), LPRowBase< R >::lhs(), MSG_ERROR, SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numIncludedRows, SoPlex::numRowsReal(), SoPlex::realParam(), LPRowBase< R >::rhs(), SPxSolver::rowId(), LPRowBase< R >::setRowVector(), SPxBasis::solve(), soplex::spx_alloc(), soplex::spx_free(), SoPlex::spxout, SoPlex::TIMELIMIT, TIMELIMIT_FRAC, SSVectorBase< R >::unSetup(), SPxSolver::vector(), and SPxException::what().

Referenced by SoPlex::_formDecompReducedProblem().

◆ _getRowsForRemovalComplementaryProblem()

void _getRowsForRemovalComplementaryProblem	(	int *	nonposind,
		int *	bind,
		int *	rowsforremoval,
		int *	nrowsforremoval,
		int	nnonposind
	)

private

computes the rows to remove from the complementary problem

Definition at line 1978 of file solvedbds.cpp.

◆ _getZeroDualMultiplierIndices()

void _getZeroDualMultiplierIndices	(	Vector	feasVector,
		int *	nonposind,
		int *	colsforremoval,
		int *	nnonposind,
		bool &	stop
	)

private

identifies the columns of the row-form basis that correspond to rows with zero dual multipliers.

Definition at line 1556 of file solvedbds.cpp.

References SoPlex::_decompReducedProbColIDs, SoPlex::_decompReducedProbCols, SoPlex::_solver, SPxBasis::baseId(), SPxSolver::basis(), SoPlex::decompTerminate(), SoPlex::EPSILON_ZERO, SoPlex::FEASTOL, SPxId::isSPxColId(), SPxId::isSPxRowId(), soplex::isZero(), SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::realParam(), SPxSolver::rep(), SPxSolver::ROW, SoPlex::TIMELIMIT, and TIMELIMIT_FRAC.

Referenced by SoPlex::_formDecompReducedProblem().

◆ _identifyComplementaryDualFixedPrimalVars()

void _identifyComplementaryDualFixedPrimalVars ( int * currFixedVars )

private

removing the dual columns related to the fixed variables

identify the dual columns related to the fixed variables

Definition at line 2797 of file solvedbds.cpp.

References SoPlex::_decompReducedProbColRowIDs, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxBasis::Desc::D_FREE, SPxBasis::Desc::D_ON_LOWER, SPxBasis::Desc::D_ON_UPPER, SPxBasis::desc(), soplex::EQ(), SoPlex::FEASTOL, SoPlex::getOrigVarFixedDirection(), SPxLPBase< R >::lhs(), MSG_INFO3, SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SPxSolver::pVec(), SoPlex::realParam(), SPxLPBase< R >::rhs(), SPxBasis::Desc::rowStatus(), and SoPlex::spxout.

Referenced by SoPlex::_updateDecompComplementaryDualProblem().

◆ _identifyComplementaryPrimalFixedPrimalVars()

void _identifyComplementaryPrimalFixedPrimalVars ( int * currFixedVars )

private

removing the dual columns related to the fixed variables

identify the dual columns related to the fixed variables

Definition at line 3041 of file solvedbds.cpp.

References SoPlex::_decompReducedProbColRowIDs, SoPlex::_realLP, SoPlex::_solver, SPxSolver::basis(), SPxBasis::desc(), SoPlex::getOrigVarFixedDirection(), MSG_INFO3, SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SPxBasis::Desc::rowStatus(), and SoPlex::spxout.

Referenced by SoPlex::_updateDecompComplementaryPrimalProblem().

◆ _idxToPerm()

void _idxToPerm	(	int *	idx,
		int	idxSize,
		int *	perm,
		int	permSize
	)		const

private

creates a permutation for removing rows/columns from an array of indices

Definition at line 7117 of file soplex.cpp.

Referenced by SoPlex::removeColsRational(), SoPlex::removeColsReal(), SoPlex::removeRowsRational(), and SoPlex::removeRowsReal().

◆ _invalidateSolution()

void _invalidateSolution ( )

private

invalidates solution

Todo:: maybe this should be done individually at the places when this method is called

Definition at line 7861 of file soplex.cpp.

References SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_solRational, SoPlex::_solReal, SoPlex::_status, SolBase< R >::invalidate(), and SPxSolver::UNKNOWN.

◆ _isConsistent()

bool _isConsistent ( ) const

private

checks consistency

Definition at line 7150 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SoPlex::_currentSettings, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalLUSolverBind, SoPlex::_realLP, SoPlex::_rowTypes, SoPlex::_solver, SoPlex::_statistics, SLUFactorRational::dim(), SoPlex::intParam(), SoPlex::numColsRational(), SoPlex::numColsReal(), SoPlex::numRowsRational(), SoPlex::numRowsReal(), DataArray< T >::size(), SLUFactorRational::status(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_ONLYREAL, and SLinSolverRational::UNLOADED.

Referenced by SoPlex::_solveRealForRational(), SoPlex::operator=(), SoPlex::optimize(), SoPlex::setBoolParam(), SoPlex::setIntParam(), SoPlex::setRealParam(), SoPlex::setSettings(), SoPlex::SoPlex(), SoPlex::syncLPRational(), SoPlex::syncLPReal(), and SoPlex::~SoPlex().

◆ _isSolveStopped()

bool _isSolveStopped	(	bool &	stoppedTime,
		bool &	stoppedIter
	)		const

private

should solving process be stopped?

Definition at line 7176 of file soplex.cpp.

References SoPlex::_statistics, SoPlex::INFTY, SoPlex::intParam(), SoPlex::Statistics::iterations, SoPlex::ITERLIMIT, SoPlex::realParam(), SoPlex::Statistics::refinements, SoPlex::REFLIMIT, SoPlex::Statistics::solvingTime, SoPlex::Statistics::stallRefinements, SoPlex::STALLREFLIMIT, Timer::time(), and SoPlex::TIMELIMIT.

Referenced by SoPlex::_factorizeColumnRational(), SoPlex::_optimizeRational(), and SoPlex::_performOptIRStable().

◆ _lift()

void _lift ( )

private

reduces matrix coefficient in absolute value by the lifting procedure of Thiele et al. 2013

Definition at line 1575 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_beforeLiftCols, SoPlex::_beforeLiftRows, SoPlex::_hasBasis, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::_realLP, SoPlex::_statistics, SVectorBase< R >::add(), SPxLPBase< R >::addRow(), DataArray< T >::append(), SPxSolver::BASIC, SPxLPBase< R >::changeBounds(), SPxLPBase< R >::changeElement(), SLUFactorRational::clear(), SVectorBase< R >::clear(), SoPlex::colVectorRational(), SPxSolver::FIXED, SVectorBase< R >::index(), SoPlex::INFTY, SoPlex::LIFTMAXVAL, SoPlex::LIFTMINVAL, MSG_DEBUG, MSG_INFO1, SoPlex::numColsRational(), SoPlex::numColsReal(), SoPlex::numRowsRational(), soplex::rationalToString(), SoPlex::realParam(), SVectorBase< R >::size(), soplex::spxAbs(), SoPlex::spxout, Timer::start(), Timer::stop(), SoPlex::Statistics::transformTime, SVectorBase< R >::value(), and SPxLPBase< R >::writeFile().

Referenced by SoPlex::_optimizeRational().

◆ _loadRealLP()

void _loadRealLP ( bool initBasis )

private

load original LP and possibly setup a slack basis

Definition at line 632 of file solvereal.cpp.

References SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_solver, SPxSolver::init(), SPxSolver::loadLP(), and soplex::spx_free().

Referenced by SoPlex::_storeSolutionReal(), and SoPlex::_storeSolutionRealFromPresol().

◆ _lowerFinite()

bool _lowerFinite ( const RangeType & rangeType ) const

private

checks whether RangeType corresponds to finite lower bound

Definition at line 7254 of file soplex.cpp.

References SoPlex::RANGETYPE_BOXED, SoPlex::RANGETYPE_FIXED, and SoPlex::RANGETYPE_LOWER.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_performOptIRStable(), SoPlex::_reconstructSolutionRational(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformFeasibility(), and SoPlex::_untransformUnbounded().

◆ _optimizeRational()

void _optimizeRational ( )

private

solves rational LP

Todo:: implement row objectives with row representation

Todo:: implement handling of row objectives in Cplex interface

Todo:: this should be stored already earlier, possible switch use solRational above and solFeas here

Todo:: set status to ABORT_VALUE if optimal solution exceeds objective limit

Definition at line 28 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SolBase< R >::_dual, SoPlex::_hasBasis, SolBase< R >::_hasPrimalRay, SoPlex::_hasSolRational, SolBase< R >::_isDualFeasible, SoPlex::_isRealLPLoaded, SoPlex::_isSolveStopped(), SoPlex::_lastSolveMode, SoPlex::_lift(), SoPlex::_performFeasIRStable(), SoPlex::_performOptIRStable(), SoPlex::_performUnboundedIRStable(), SolBase< R >::_primalRay, SoPlex::_project(), SoPlex::_realLP, SolBase< R >::_redCost, SoPlex::_restoreBasis(), SoPlex::_restoreLPReal(), SoPlex::_solRational, SoPlex::_solver, SoPlex::_statistics, SoPlex::_status, SoPlex::_storeBasis(), SoPlex::_storedBasis, SoPlex::_storeLPReal(), SoPlex::_transformEquality(), SoPlex::_untransformEquality(), SPxSolver::ABORT_ITER, SPxSolver::ABORT_TIME, SPxSolver::basis(), SoPlex::boolParam(), SoPlex::EQTRANS, SPxSolver::ERROR, DataArray< T >::get_const_ptr(), DataArray< T >::get_ptr(), SPxSolver::getBasis(), SolBase< R >::hasPrimalRay(), SPxSolver::INFEASIBLE, SoPlex::INFTY, SoPlex::intParam(), SoPlex::LIFTING, SPxSolver::loadLP(), MSG_INFO1, MSG_INFO2, SPxBasis::NO_PROBLEM, SoPlex::numColsReal(), SoPlex::numRowsReal(), SoPlex::OBJLIMIT_LOWER, SoPlex::OBJLIMIT_UPPER, SPxSolver::OPTIMAL, SoPlex::Statistics::preprocessingTime, SoPlex::RATIOTESTER, SoPlex::RATIOTESTER_FAST, SoPlex::realParam(), SoPlex::REPRESENTATION, SoPlex::REPRESENTATION_COLUMN, DataArray< T >::reSize(), SPxSolver::setBasis(), SoPlex::setBoolParam(), SoPlex::setIntParam(), SPxSolver::setTerminationValue(), DataArray< T >::size(), SoPlex::SOLVEMODE_RATIONAL, SoPlex::Statistics::solvingTime, soplex::spx_free(), SoPlex::spxout, Timer::start(), SPxBasis::status(), Timer::stop(), SoPlex::TESTDUALINF, and SPxSolver::UNBOUNDED.

Referenced by SoPlex::optimize().

◆ _optimizeReal()

void _optimizeReal ( )

private

◆ _parseSettingsLine()

bool _parseSettingsLine	(	char *	line,
		const int	lineNumber
	)

private

parses one line in a settings file and returns true on success; note that the string is modified

Definition at line 8298 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::Settings::boolParam, SoPlex::BOOLPARAM_COUNT, SoPlex::Settings::intParam, SoPlex::INTPARAM_COUNT, MSG_INFO1, SoPlex::Settings::BoolParam::name, SoPlex::Settings::IntParam::name, SoPlex::Settings::RealParam::name, soplex::readStringRational(), REAL_FORMAT, SoPlex::Settings::realParam, SoPlex::REALPARAM_COUNT, SET_MAX_LINE_LEN, SoPlex::setBoolParam(), SoPlex::setIntParam(), SoPlex::setRandomSeed(), SoPlex::setRealParam(), and SoPlex::spxout.

Referenced by SoPlex::loadSettingsFile().

◆ _performFeasIRStable()

void _performFeasIRStable	(	SolRational &	sol,
		bool &	withDualFarkas,
		bool &	stopped,
		bool &	stoppedIter,
		bool &	error
	)

private

performs iterative refinement on the auxiliary problem for testing feasibility

Definition at line 1475 of file solverational.cpp.

References SoPlex::_computeInfeasBox(), SolBase< R >::_dual, SolBase< R >::_dualFarkas, SolBase< R >::_hasDualFarkas, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_performOptIRStable(), SolBase< R >::_primal, SoPlex::_rationalFeastol, SoPlex::_rationalPosone, SoPlex::_solRational, SoPlex::_statistics, SoPlex::_transformFeasibility(), SoPlex::_untransformFeasibility(), SoPlex::Statistics::feasRefinements, SoPlex::FEASTOL, SolBase< R >::invalidate(), MSG_DEBUG, SoPlex::numColsRational(), soplex::rationalToString(), SoPlex::realParam(), and SoPlex::Statistics::refinements.

Referenced by SoPlex::_optimizeRational().

◆ _performOptIRStable()

void _performOptIRStable	(	SolRational &	sol,
		bool	acceptUnbounded,
		bool	acceptInfeasible,
		int	minRounds,
		bool &	primalFeasible,
		bool &	dualFeasible,
		bool &	infeasible,
		bool &	unbounded,
		bool &	stopped,
		bool &	stoppedIter,
		bool &	error
	)

private

solves current problem with iterative refinement and recovery mechanism

Todo:: remove _modObj and use dualScale * sol._redCost directly

Definition at line 353 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SolBase< R >::_dual, SolBase< R >::_dualFarkas, SolBase< R >::_dualObjVal, SoPlex::_ensureDSVectorRationalMemory(), SoPlex::_factorizeColumnRational(), SoPlex::_hasBasis, SolBase< R >::_hasDualFarkas, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_isSolveStopped(), SoPlex::_lowerFinite(), SoPlex::_modLhs, SoPlex::_modLower, SoPlex::_modObj, SoPlex::_modRhs, SoPlex::_modUpper, SolBase< R >::_primal, SoPlex::_primalDualDiff, SolBase< R >::_primalObjVal, SoPlex::_rationalFeastol, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalMaxscaleincr, SoPlex::_rationalNegInfty, SoPlex::_rationalOpttol, SoPlex::_rationalPosInfty, SoPlex::_rationalPosone, SoPlex::_realLP, SoPlex::_reconstructSolutionRational(), SolBase< R >::_redCost, SoPlex::_rowTypes, SoPlex::_slackCols, SolBase< R >::_slacks, SoPlex::_solver, SoPlex::_solveRealStable(), SoPlex::_statistics, SoPlex::_upperFinite(), SPxSolver::ABORT_ITER, SPxSolver::ABORT_TIME, DSVectorBase< R >::add(), SPxLPBase< R >::addDualActivity(), SPxLPBase< R >::addPrimalActivity(), SPxSolver::BASIC, SPxSolver::basis(), SoPlex::boolParam(), SPxSolver::changeLhs(), SPxSolver::changeLower(), SPxSolver::changeObj(), SPxSolver::changeRhs(), SPxSolver::changeRowObj(), SPxSolver::changeUpper(), SLUFactorRational::clear(), SVectorBase< R >::clear(), SPxSolver::clearRowObjs(), LPColSetBase< R >::colVector(), SPxLPBase< R >::computePrimalActivity(), SPxBasis::desc(), SPxBasis::Desc::dump(), SoPlex::EQTRANS, SPxSolver::FIXED, SoPlex::FPFEASTOL, SoPlex::FPOPTTOL, DataArray< T >::get_const_ptr(), SPxLPBase< R >::getObj(), SVectorBase< R >::index(), SPxSolver::INFEASIBLE, SoPlex::INFTY, SoPlex::intParam(), Rational::invert(), SoPlex::Statistics::iterations, SoPlex::lhsRational(), SoPlex::lowerRational(), SPxLPBase< R >::maxObj(), SPxLPBase< R >::maxRowObj(), MSG_DEBUG, MSG_INFO1, MSG_INFO2, MSG_WARNING, SPxBasis::NO_PROBLEM, LPColSetBase< R >::num(), SoPlex::numColsRational(), SoPlex::numRowsRational(), SPxLPBase< R >::obj(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SPxSolver::OPTIMAL, SPxSolver::opttol(), SoPlex::Statistics::pivotRefinements, SoPlex::POWERSCALING, Rational::powRound(), SoPlex::RANGETYPE_FIXED, SoPlex::RATFAC, SoPlex::RATFAC_MINSTALLS, SoPlex::RATFACJUMP, SoPlex::Statistics::rationalTime, soplex::rationalToString(), SoPlex::RATREC, SoPlex::RATREC_FREQ, SoPlex::realParam(), DVectorBase< R >::reDim(), SoPlex::Statistics::refinements, SPxBasis::REGULAR, SoPlex::rhsRational(), SPxSolver::setBasis(), SPxSolver::setFeastol(), SPxSolver::setOpttol(), SVectorBase< R >::size(), DataArray< T >::size(), SoPlex::Statistics::solvingTime, soplex::spxAbs(), SoPlex::spxout, SoPlex::Statistics::stallRefinements, Timer::start(), SPxBasis::status(), Timer::stop(), SPxLPBase< R >::subDualActivity(), Timer::time(), SPxSolver::UNBOUNDED, SPxSolver::UNKNOWN, SoPlex::upperRational(), SVectorBase< R >::value(), and SPxSolver::ZERO.

Referenced by SoPlex::_optimizeRational(), SoPlex::_performFeasIRStable(), and SoPlex::_performUnboundedIRStable().

◆ _performUnboundedIRStable()

void _performUnboundedIRStable	(	SolRational &	sol,
		bool &	hasUnboundedRay,
		bool &	stopped,
		bool &	stoppedIter,
		bool &	error
	)

private

performs iterative refinement on the auxiliary problem for testing unboundedness

Definition at line 1409 of file solverational.cpp.

References SoPlex::_performOptIRStable(), SolBase< R >::_primal, SoPlex::_rationalFeastol, SoPlex::_rationalPosone, SoPlex::_statistics, SoPlex::_transformUnbounded(), SoPlex::_untransformUnbounded(), SoPlex::FEASTOL, SolBase< R >::invalidate(), MSG_DEBUG, SoPlex::numColsRational(), soplex::rationalToString(), SoPlex::realParam(), SoPlex::Statistics::refinements, and SoPlex::Statistics::unbdRefinements.

Referenced by SoPlex::_optimizeRational().

◆ _preprocessAndSolveReal()

void _preprocessAndSolveReal ( bool applyPreprocessing )

private

solves real LP with/without preprocessing

Definition at line 185 of file solvereal.cpp.

References SoPlex::_applyPolishing, SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_disableSimplifierAndScaler(), SoPlex::_enableSimplifierAndScaler(), SoPlex::_evaluateSolutionReal(), SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_isRealLPScaled, SoPlex::_realLP, SoPlex::_scaler, SoPlex::_simplifier, SoPlex::_solver, SoPlex::_solveRealLPAndRecordStatistics(), SoPlex::_statistics, SoPlex::boolParam(), SPxLPBase< R >::changeObjOffset(), SoPlex::EPSILON_ZERO, SoPlex::FEASTOL, DataArray< T >::get_const_ptr(), SPxSimplifier::getObjoffset(), SoPlex::intParam(), SPxLPBase< R >::isScaled(), SPxSolver::loadLP(), SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SoPlex::OBJ_OFFSET, SoPlex::OBJLIMIT_LOWER, SoPlex::OBJLIMIT_UPPER, SoPlex::OBJSENSE, SoPlex::OBJSENSE_MINIMIZE, SPxSimplifier::OKAY, SoPlex::OPTTOL, SoPlex::Statistics::preprocessingTime, SoPlex::RATIOTESTER, SoPlex::RATIOTESTER_BOUNDFLIPPING, SoPlex::realParam(), SoPlex::REPRESENTATION, SoPlex::REPRESENTATION_AUTO, SoPlex::REPRESENTATION_ROW, SoPlex::REPRESENTATION_SWITCH, SoPlex::ROWBOUNDFLIPS, SPxScaler::scale(), SPxSolver::setBasis(), SPxLPBase< R >::setScalingInfo(), SPxSolver::setSolutionPolishing(), SPxSolver::setTerminationValue(), SPxSimplifier::simplify(), DataArray< T >::size(), soplex::spx_alloc(), soplex::spx_free(), Timer::start(), and Timer::stop().

Referenced by SoPlex::_evaluateSolutionReal(), SoPlex::_optimizeReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), and SoPlex::_verifySolutionReal().

◆ _project()

void _project ( SolRational & sol )

private

undoes lifting

Todo:: if we know the mapping between original and lifting columns, we simply need to add the reduced cost of the lifting column to the reduced cost of the original column; this is not implemented now, because for optimal solutions the reduced costs of the lifting columns are zero

Definition at line 1753 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_beforeLiftCols, SoPlex::_beforeLiftRows, SolBase< R >::_dual, SolBase< R >::_dualFarkas, SoPlex::_hasBasis, SolBase< R >::_isDualFeasible, SolBase< R >::_primal, SolBase< R >::_primalRay, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalOpttol, SoPlex::_realLP, SolBase< R >::_redCost, SolBase< R >::_slacks, SoPlex::_statistics, SPxSolver::BASIC, SLUFactorRational::clear(), SolBase< R >::hasDualFarkas(), SolBase< R >::hasPrimalRay(), SolBase< R >::isDualFeasible(), SolBase< R >::isPrimalFeasible(), SoPlex::LIFTMAXVAL, MSG_DEBUG, MSG_INFO1, SoPlex::numColsRational(), SoPlex::numColsReal(), SoPlex::numRowsRational(), SoPlex::numRowsReal(), SoPlex::realParam(), DVectorBase< R >::reDim(), SPxLPBase< R >::removeColRange(), SPxLPBase< R >::removeRowRange(), DataArray< T >::reSize(), soplex::spxAbs(), SoPlex::spxout, Timer::start(), Timer::stop(), SoPlex::Statistics::transformTime, and SPxLPBase< R >::writeFile().

Referenced by SoPlex::_optimizeRational().

◆ _rangeToPerm()

void _rangeToPerm	(	int	start,
		int	end,
		int *	perm,
		int	permSize
	)		const

private

creates a permutation for removing rows/columns from a range of indices

Definition at line 7138 of file soplex.cpp.

Referenced by SoPlex::removeColRangeRational(), SoPlex::removeColRangeReal(), SoPlex::removeRowRangeRational(), and SoPlex::removeRowRangeReal().

◆ _rangeTypeRational()

SoPlex::RangeType _rangeTypeRational	(	const Rational &	lower,
		const Rational &	upper
	)		const

private

determines RangeType from rational bounds

Definition at line 7216 of file soplex.cpp.

References SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::RANGETYPE_BOXED, SoPlex::RANGETYPE_FIXED, SoPlex::RANGETYPE_FREE, SoPlex::RANGETYPE_LOWER, and SoPlex::RANGETYPE_UPPER.

◆ _rangeTypeReal()

SoPlex::RangeType _rangeTypeReal	(	const Real &	lower,
		const Real &	upper
	)		const

private

determines RangeType from real bounds

Definition at line 7191 of file soplex.cpp.

References soplex::infinity, SoPlex::RANGETYPE_BOXED, SoPlex::RANGETYPE_FIXED, SoPlex::RANGETYPE_FREE, SoPlex::RANGETYPE_LOWER, and SoPlex::RANGETYPE_UPPER.

Referenced by SoPlex::_recomputeRangeTypesReal(), SoPlex::changeBoundsReal(), SoPlex::changeColReal(), SoPlex::changeRangeReal(), and SoPlex::changeRowReal().

◆ _readFileRational()

bool _readFileRational	(	const char *	filename,
		NameSet *	rowNames = `0`,
		NameSet *	colNames = `0`,
		DIdxSet *	intVars = `0`
	)

private

reads rational LP in LP or MPS format from file and returns true on success; gets row names, column names, and integer variables if desired

Definition at line 8122 of file soplex.cpp.

References SoPlex::_ensureRationalLP(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_recomputeRangeTypesRational(), SoPlex::_statistics, SoPlex::_status, SoPlex::_syncLPReal(), SPxLPBase< R >::changeObjOffset(), SoPlex::Statistics::clearAllData(), SoPlex::clearBasis(), SoPlex::clearLPRational(), SoPlex::intParam(), SPxLPBase< R >::MAXIMIZE, SoPlex::OBJ_OFFSET, SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, SPxLPBase< R >::readFile(), SoPlex::Statistics::readingTime, SoPlex::realParam(), SoPlex::setIntParam(), soplex::spx_free(), SPxLPBase< R >::spxSense(), Timer::start(), Timer::stop(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, and SPxSolver::UNKNOWN.

Referenced by SoPlex::readFile().

◆ _readFileReal()

bool _readFileReal	(	const char *	filename,
		NameSet *	rowNames = `0`,
		NameSet *	colNames = `0`,
		DIdxSet *	intVars = `0`
	)

private

reads real LP in LP or MPS format from file and returns true on success; gets row names, column names, and integer variables if desired

Definition at line 8081 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_realLP, SoPlex::_statistics, SoPlex::_status, SoPlex::_syncLPRational(), SPxLPBase< R >::changeObjOffset(), SoPlex::Statistics::clearAllData(), SoPlex::clearBasis(), SoPlex::clearLPReal(), SoPlex::intParam(), SPxLPBase< Real >::MAXIMIZE, SoPlex::OBJ_OFFSET, SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, SPxLPBase< R >::readFile(), SoPlex::Statistics::readingTime, SoPlex::realParam(), SoPlex::setIntParam(), SPxLPBase< R >::spxSense(), Timer::start(), Timer::stop(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SPxSolver::UNKNOWN.

Referenced by SoPlex::readFile().

◆ _reapplyPersistentScaling()

bool _reapplyPersistentScaling ( ) const

private

check whether persistent scaling is supposed to be reapplied again after unscaling

Definition at line 82 of file solvereal.cpp.

References SoPlex::_optimizeCalls, SoPlex::_unscaleCalls, ALLOWED_UNSCALE_PERCENTAGE, and MIN_OPT_CALLS_WITH_SCALING.

Referenced by SoPlex::_optimizeReal().

◆ _recomputeRangeTypesRational()

void _recomputeRangeTypesRational ( )

private

recomputes range types from scratch using rational LP

Definition at line 8195 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), SoPlex::numColsRational(), SoPlex::numRowsRational(), DataArray< T >::reSize(), SPxLPBase< R >::rhs(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_readFileRational(), SoPlex::_syncLPRational(), and SoPlex::setRealParam().

◆ _recomputeRangeTypesReal()

void _recomputeRangeTypesReal ( )

private

recomputes range types from scratch using real LP

Definition at line 8182 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_rangeTypeReal(), SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), SoPlex::numColsReal(), SoPlex::numRowsReal(), DataArray< T >::reSize(), SPxLPBase< R >::rhs(), and SPxLPBase< R >::upper().

◆ _reconstructSolutionRational()

bool _reconstructSolutionRational	(	SolRational &	sol,
		DataArray< SPxSolver::VarStatus > &	basisStatusRows,
		DataArray< SPxSolver::VarStatus > &	basisStatusCols,
		const Rational &	denomBoundSquared
	)

private

attempts rational reconstruction of primal-dual solution

Todo:: we should compute them one by one so we can abort when encountering an infeasibility

Todo:: we should compute them one by one so we can abort when encountering an infeasibility

Definition at line 3976 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SolBase< R >::_dual, SoPlex::_hasBasis, SoPlex::_lowerFinite(), SolBase< R >::_primal, SoPlex::_rationalLP, SolBase< R >::_redCost, SoPlex::_rowTypes, SolBase< R >::_slacks, SoPlex::_statistics, SoPlex::_upperFinite(), SoPlex::_workSol, DIdxSet::addIdx(), SPxSolver::BASIC, SPxLPBase< R >::computePrimalActivity(), SPxSolver::FIXED, SPxLPBase< R >::getObj(), SoPlex::intParam(), SolBase< R >::isDualFeasible(), SolBase< R >::isPrimalFeasible(), SoPlex::lhsRational(), SoPlex::lowerRational(), MSG_DEBUG, MSG_INFO1, MSG_WARNING, SoPlex::numColsRational(), SoPlex::numRowsRational(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::Statistics::rationalReconstructions, soplex::rationalToString(), SoPlex::Statistics::reconstructionTime, soplex::reconstructVector(), DVectorBase< R >::reDim(), SoPlex::rhsRational(), soplex::sign(), SoPlex::spxout, Timer::start(), Timer::stop(), SPxLPBase< R >::subDualActivity(), SPxSolver::UNDEFINED, SoPlex::upperRational(), and SPxSolver::ZERO.

Referenced by SoPlex::_performOptIRStable().

◆ _removeColRangeReal()

void _removeColRangeReal	(	int	start,
		int	end,
		int	perm[]
	)

private

removes columns start to end including both; an array perm of size numColsReal() may be passed as buffer memory

◆ _removeColReal()

void _removeColReal ( int i )

private

removes column i

Definition at line 7797 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxBasis::NO_PROBLEM, SPxLPBase< R >::removeCol(), DataArray< T >::removeLast(), DataArray< T >::size(), and SPxBasis::status().

Referenced by SoPlex::removeColRational(), and SoPlex::removeColReal().

◆ _removeColsReal() [1/2]

void _removeColsReal ( int perm[] )

private

removes all columns with an index i such that perm[i] < 0; upon completion, perm[i] >= 0 indicates the new index where column i has been moved to; note that perm must point to an array of size at least numColsReal()

Definition at line 7826 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxBasis::NO_PROBLEM, SoPlex::numColsReal(), SPxLPBase< R >::removeCols(), DataArray< T >::reSize(), and SPxBasis::status().

Referenced by SoPlex::removeColsRational(), and SoPlex::removeColsReal().

◆ _removeColsReal() [2/2]

void _removeColsReal	(	int	idx[],
		int	n,
		int	perm[]
	)

private

remove all columns with indices in array idx of size n; an array perm of size numColsReal() may be passed as buffer memory

◆ _removeComplementaryDualFixedPrimalVars()

void _removeComplementaryDualFixedPrimalVars ( int * currFixedVars )

private

removing the dual columns related to the fixed variables

Definition at line 2841 of file solvedbds.cpp.

References SoPlex::_compSolver, SoPlex::_decompCompProbColIDsIdx, SoPlex::_decompFixedVarDualIDs, SoPlex::_decompVarBoundDualIDs, SoPlex::_fixedOrigVars, SoPlex::_realLP, soplex::GE(), soplex::GT(), soplex::infinity, DataKey::inValidate(), soplex::LE(), SPxLPBase< R >::lower(), soplex::LT(), SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SPxLPBase< R >::removeCols(), soplex::spx_alloc(), soplex::spx_free(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_updateDecompComplementaryDualProblem().

◆ _removeRowRangeReal()

void _removeRowRangeReal	(	int	start,
		int	end,
		int	perm[]
	)

private

removes rows start to end including both; an array perm of size numRowsReal() may be passed as buffer memory

◆ _removeRowReal()

void _removeRowReal ( int i )

private

removes row i and adjusts basis

Definition at line 7733 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxBasis::NO_PROBLEM, DataArray< T >::removeLast(), SPxLPBase< R >::removeRow(), DataArray< T >::size(), and SPxBasis::status().

Referenced by SoPlex::removeRowRational(), and SoPlex::removeRowReal().

◆ _removeRowsReal() [1/2]

void _removeRowsReal ( int perm[] )

private

removes all rows with an index i such that perm[i] < 0; upon completion, perm[i] >= 0 indicates the new index where row i has been moved to; note that perm must point to an array of size at least numRowsReal()

Definition at line 7762 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SLUFactorRational::clear(), SPxBasis::NO_PROBLEM, SoPlex::numRowsReal(), SPxLPBase< R >::removeRows(), DataArray< T >::reSize(), and SPxBasis::status().

Referenced by SoPlex::removeRowsRational(), and SoPlex::removeRowsReal().

◆ _removeRowsReal() [2/2]

void _removeRowsReal	(	int	idx[],
		int	n,
		int	perm[]
	)

private

remove all rows with indices in array idx of size n; an array perm of size numRowsReal() may be passed as buffer memory

◆ _resolveWithoutPreprocessing()

void _resolveWithoutPreprocessing ( SPxSimplifier::Result simplificationStatus )

private

loads original problem into solver and solves again after it has been solved to optimality with preprocessing

loads original problem into solver and solves again after it has been solved to infeasibility or unboundedness with preprocessing

Definition at line 286 of file solvereal.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_preprocessAndSolveReal(), SoPlex::_scaler, SoPlex::_simplifier, SoPlex::_solver, SoPlex::_status, DataArray< T >::get_ptr(), SPxSimplifier::getBasis(), SPxSolver::getBasis(), SPxSolver::getDual(), SPxSolver::getPrimal(), SPxSolver::getRedCost(), SPxSolver::getSlacks(), SPxSolver::INFEASIBLE, SPxSolver::INForUNBD, SPxLPBase< R >::isScaled(), SPxSimplifier::isUnsimplified(), MSG_INFO1, SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSimplifier::OKAY, DataArray< T >::reSize(), DataArray< T >::size(), SoPlex::spxout, SPxSolver::UNBOUNDED, SPxScaler::unscaleDual(), SPxScaler::unscalePrimal(), SPxScaler::unscaleRedCost(), SPxScaler::unscaleSlacks(), SPxSimplifier::unsimplify(), and SPxException::what().

Referenced by SoPlex::_evaluateSolutionReal().

◆ _restoreBasis()

void _restoreBasis ( )

private

restore basis

Definition at line 2377 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_storedBasis, SoPlex::_storedBasisStatusCols, and SoPlex::_storedBasisStatusRows.

Referenced by SoPlex::_optimizeRational().

◆ _restoreLPReal()

void _restoreLPReal ( )

private

restores objective, bounds, and sides of real LP

Definition at line 1868 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SolBase< R >::_dual, SoPlex::_hasBasis, SoPlex::_hasSolRational, SoPlex::_manualLhs, SoPlex::_manualLower, SoPlex::_manualObj, SoPlex::_manualRealLP, SoPlex::_manualRhs, SoPlex::_manualUpper, SoPlex::_realLP, SoPlex::_solRational, SoPlex::_solver, SPxSolver::basis(), SPxLPBase< R >::changeLhs(), SPxLPBase< R >::changeLower(), SPxLPBase< R >::changeObj(), SPxLPBase< R >::changeRhs(), SPxLPBase< R >::changeUpper(), SPxSolver::FIXED, DataArray< T >::get_const_ptr(), soplex::infinity, SoPlex::intParam(), SolBase< R >::isDualFeasible(), SPxLPBase< R >::lhs(), SPxSolver::loadLP(), SPxBasis::NO_PROBLEM, SPxLPBase< R >::nRows(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SPxLPBase< R >::rhs(), SPxSolver::setBasis(), soplex::spxNextafter(), SPxBasis::status(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_MANUAL.

Referenced by SoPlex::_optimizeRational().

◆ _setComplementaryDualOriginalObjective()

void _setComplementaryDualOriginalObjective ( )

private

updating the complementary dual problem with the original objective function

Definition at line 3108 of file solvedbds.cpp.

References SoPlex::_compSlackDualRowId, SoPlex::_compSolver, SoPlex::_decompCompProbColIDsIdx, SoPlex::_decompDualRowIDs, SoPlex::_realLP, SPxSolver::changeLhs(), SPxSolver::changeRhs(), soplex::GE(), soplex::infinity, soplex::isZero(), soplex::LE(), SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), SPxLPBase< R >::nCols(), soplex::NE(), SPxLPBase< R >::number(), SPxLPBase< R >::obj(), SPxLPBase< R >::removeRow(), SPxLPBase< R >::rhs(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _setComplementaryPrimalOriginalObjective()

void _setComplementaryPrimalOriginalObjective ( )

private

updating the complementary primal problem with the original objective function

Definition at line 3178 of file solvedbds.cpp.

References SoPlex::_compSlackColId, SoPlex::_compSolver, SoPlex::_decompCompPrimalColIDs, SoPlex::_decompPrimalColIDs, SoPlex::_realLP, SPxSolver::changeObj(), SPxLPBase< R >::maxObj(), SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), and SPxLPBase< R >::removeCol().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _solveDecompositionDualSimplex()

void _solveDecompositionDualSimplex ( )

private

solves LP using the decomposition based dual simplex

solves LP using the decomposition dual simplex

Definition at line 48 of file solvedbds.cpp.

Referenced by SoPlex::optimize().

◆ _solveDecompReducedProblem()

void _solveDecompReducedProblem ( )

private

solves the reduced problem

◆ _solveRealForRational()

SPxSolver::Status _solveRealForRational	(	bool	fromscratch,
		VectorReal &	primal,
		VectorReal &	dual,
		DataArray< SPxSolver::VarStatus > &	basisStatusRows,
		DataArray< SPxSolver::VarStatus > &	basisStatusCols,
		bool &	returnedBasis
	)

private

solves real LP during iterative refinement

Todo:: move to private helper methods

Todo:: move to private helper methods

Todo:: catch exception

Definition at line 3080 of file solverational.cpp.

References SoPlex::_disableSimplifierAndScaler(), SoPlex::_enableSimplifierAndScaler(), SoPlex::_hasBasis, SoPlex::_isConsistent(), SoPlex::_rationalLUSolver, SoPlex::_scaler, SoPlex::_simplifier, SoPlex::_solver, SoPlex::_solveRealLPAndRecordStatistics(), SoPlex::_statistics, SPxSolver::ABORT_CYCLING, SPxSolver::ABORT_ITER, SPxSolver::ABORT_TIME, SPxSolver::ABORT_VALUE, SoPlex::ACCEPTCYCLING, SoPlex::boolParam(), SLUFactorRational::clear(), VectorBase< R >::dim(), SPxSimplifier::DUAL_INFEASIBLE, SoPlex::EPSILON_ZERO, SPxSolver::ERROR, SoPlex::FPFEASTOL, SoPlex::FPOPTTOL, DataArray< T >::get_ptr(), SPxSimplifier::getBasis(), SPxSolver::getBasis(), SPxSolver::getDual(), SPxSolver::getDualfarkas(), SPxSolver::getPrimal(), SPxSolver::getRedCost(), SPxSolver::getSlacks(), SPxSimplifier::INFEASIBLE, SPxSolver::INFEASIBLE, SPxSolver::INForUNBD, SoPlex::intParam(), SPxSimplifier::isUnsimplified(), SPxSolver::loadLP(), MSG_INFO1, SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SoPlex::numColsRational(), SoPlex::numRowsRational(), SPxSimplifier::OKAY, SPxSolver::OPTIMAL, SoPlex::RATIOTESTER, SoPlex::RATIOTESTER_BOUNDFLIPPING, SoPlex::realParam(), SPxSolver::REGULAR, DataArray< T >::reSize(), SPxSolver::RUNNING, SPxScaler::scale(), SPxSolver::setBasis(), SPxSimplifier::simplify(), SPxSolver::SINGULAR, DataArray< T >::size(), soplex::spx_alloc(), soplex::spx_free(), SoPlex::spxout, Timer::start(), SPxSolver::status(), Timer::stop(), SoPlex::Statistics::syncTime, SPxSimplifier::UNBOUNDED, SPxSolver::UNBOUNDED, SPxSolver::UNKNOWN, SPxScaler::unscaleDual(), SPxScaler::unscalePrimal(), SPxScaler::unscaleRedCost(), SPxScaler::unscaleSlacks(), SPxSimplifier::unsimplifiedDual(), SPxSimplifier::unsimplifiedPrimal(), SPxSimplifier::unsimplify(), and SPxSimplifier::VANISHED.

Referenced by SoPlex::_solveRealStable().

◆ _solveRealLPAndRecordStatistics()

void _solveRealLPAndRecordStatistics ( )

private

call floating-point solver and update statistics on iterations etc.

Definition at line 7976 of file soplex.cpp.

Referenced by SoPlex::_preprocessAndSolveReal(), and SoPlex::_solveRealForRational().

◆ _solveRealStable()

SPxSolver::Status _solveRealStable	(	bool	acceptUnbounded,
		bool	acceptInfeasible,
		VectorReal &	primal,
		VectorReal &	dual,
		DataArray< SPxSolver::VarStatus > &	basisStatusRows,
		DataArray< SPxSolver::VarStatus > &	basisStatusCols,
		bool &	returnedBasis,
		const bool	forceNoSimplifier = `false`
	)

private

solves real LP with recovery mechanism

Definition at line 3310 of file solverational.cpp.

References SoPlex::_pricerDevex, SoPlex::_ratiotesterTextbook, SoPlex::_slufactor, SoPlex::_solver, SoPlex::_solveRealForRational(), SoPlex::ALGORITHM, SoPlex::ALGORITHM_DUAL, SoPlex::ALGORITHM_PRIMAL, SPxSolver::ENTER, SPxSolver::factorize(), SPxSolver::feastol(), SoPlex::FPFEASTOL, SoPlex::FPOPTTOL, soplex::GE(), SPxSolver::INFEASIBLE, SoPlex::intParam(), SPxSolver::LEAVE, SLUFactor::markowitz(), MSG_DEBUG, MSG_INFO1, SPxSolver::OPTIMAL, SoPlex::PRICER, SPxSolver::pricer(), SoPlex::PRICER_DEVEX, SoPlex::PRICER_STEEP, SoPlex::RATIOTESTER, SPxSolver::ratiotester(), SoPlex::RATIOTESTER_FAST, SoPlex::RATIOTESTER_TEXTBOOK, SoPlex::realParam(), SPxSolver::reLoad(), SoPlex::SCALER, SoPlex::SCALER_BIEQUI, SoPlex::SCALER_OFF, SPxSolver::setDelta(), SPxSolver::setFeastol(), SoPlex::setIntParam(), SLUFactor::setMarkowitz(), SPxSolver::setOpttol(), SPxSolver::setType(), SoPlex::SIMPLIFIER, SoPlex::SIMPLIFIER_AUTO, SoPlex::SIMPLIFIER_OFF, SoPlex::spxout, SPxSolver::type(), SPxSolver::UNBOUNDED, and SPxSolver::UNKNOWN.

Referenced by SoPlex::_performOptIRStable().

◆ _storeBasis()

void _storeBasis ( )

private

store basis

Definition at line 2360 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_storedBasis, SoPlex::_storedBasisStatusCols, and SoPlex::_storedBasisStatusRows.

Referenced by SoPlex::_optimizeRational().

◆ _storeLPReal()

void _storeLPReal ( )

private

stores objective, bounds, and sides of real LP

Definition at line 1847 of file solverational.cpp.

References SoPlex::_manualLhs, SoPlex::_manualLower, SoPlex::_manualObj, SoPlex::_manualRealLP, SoPlex::_manualRhs, SoPlex::_manualUpper, SoPlex::_realLP, SPxLPBase< R >::getObj(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), SPxLPBase< R >::nCols(), DVectorBase< R >::reDim(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_MANUAL, and SPxLPBase< R >::upper().

Referenced by SoPlex::_optimizeRational().

◆ _storeSolutionReal()

void _storeSolutionReal ( bool verify = true )

private

stores solution of the real LP; before calling this, the real LP must be loaded in the solver and solved (again)

stores solution data from the solver, possibly after applying unscaling and unsimplifying

Definition at line 410 of file solvereal.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SolBase< R >::_dual, SolBase< R >::_dualFarkas, SolBase< R >::_dualObjVal, SoPlex::_hasBasis, SolBase< R >::_hasDualFarkas, SolBase< R >::_hasPrimalRay, SoPlex::_hasSolReal, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_isRealLPLoaded, SoPlex::_isRealLPScaled, SoPlex::_loadRealLP(), SoPlex::_preprocessAndSolveReal(), SolBase< R >::_primal, SolBase< R >::_primalObjVal, SolBase< R >::_primalRay, SoPlex::_realLP, SolBase< R >::_redCost, SoPlex::_scaler, SoPlex::_simplifier, SolBase< R >::_slacks, SoPlex::_solReal, SoPlex::_solver, SoPlex::_unscaleSolutionReal(), SoPlex::_verifySolutionReal(), SPxSolver::basis(), SPxBasis::DUAL, SoPlex::EPSILON_ZERO, SPxSolver::ERROR, SPxSolver::forceRecompNonbasicValue(), DataArray< T >::get_const_ptr(), DataArray< T >::get_ptr(), SPxSimplifier::getBasis(), SPxSolver::getBasis(), SPxSolver::getDual(), SPxSolver::getDualfarkas(), SPxSolver::getPrimal(), SPxSolver::getPrimalray(), SPxSolver::getRedCost(), SPxSolver::getSlacks(), SPxBasis::INFEASIBLE, SPxSolver::INFEASIBLE, SolBase< R >::isDualFeasible(), SolBase< R >::isPrimalFeasible(), SPxLPBase< R >::isScaled(), SPxSimplifier::isUnsimplified(), MSG_INFO1, SPxLPBase< R >::nCols(), SPxSolver::NO_PRICER, SPxBasis::NO_PROBLEM, SPxSolver::NO_PROBLEM, SPxSolver::NO_RATIOTESTER, SPxSolver::NO_SOLVER, SPxSolver::NOT_INIT, SPxLPBase< R >::nRows(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::objValue(), SPxSimplifier::OKAY, SPxSolver::OPTIMAL, SPxBasis::PRIMAL, SoPlex::realParam(), DVectorBase< R >::reDim(), SPxBasis::REGULAR, DataArray< T >::reSize(), SPxSimplifier::result(), SPxSolver::setBasis(), SPxSolver::setBasisStatus(), SPxSolver::shift(), SPxSolver::SINGULAR, DataArray< T >::size(), SoPlex::spxout, SPxBasis::status(), SoPlex::status(), SPxBasis::UNBOUNDED, SPxSolver::UNBOUNDED, SPxSimplifier::unsimplifiedDual(), SPxSimplifier::unsimplifiedPrimal(), SPxSimplifier::unsimplifiedRedCost(), SPxSimplifier::unsimplifiedSlacks(), SPxSimplifier::unsimplify(), and SPxException::what().

Referenced by SoPlex::_evaluateSolutionReal(), and SoPlex::_solveDecompositionDualSimplex().

◆ _storeSolutionRealFromPresol()

void _storeSolutionRealFromPresol ( )

private

stores solution from the simplifier because problem vanished in presolving step

Definition at line 562 of file solvereal.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SolBase< R >::_dual, SolBase< R >::_dualObjVal, SoPlex::_hasBasis, SoPlex::_hasSolReal, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_isRealLPScaled, SoPlex::_loadRealLP(), SoPlex::_preprocessAndSolveReal(), SolBase< R >::_primal, SolBase< R >::_primalObjVal, SoPlex::_realLP, SolBase< R >::_redCost, SoPlex::_simplifier, SolBase< R >::_slacks, SoPlex::_solReal, SoPlex::_solver, SoPlex::_unscaleSolutionReal(), SoPlex::_verifySolutionReal(), DataArray< T >::get_ptr(), SPxSimplifier::getBasis(), SPxSolver::getBasis(), SPxSimplifier::isUnsimplified(), MSG_INFO1, SoPlex::numColsReal(), SoPlex::numRowsReal(), SoPlex::OBJ_OFFSET, SoPlex::objReal(), SoPlex::realParam(), DVectorBase< R >::reDim(), DataArray< T >::reSize(), SPxSimplifier::result(), DataArray< T >::size(), SoPlex::spxout, SPxSimplifier::unsimplifiedDual(), SPxSimplifier::unsimplifiedPrimal(), SPxSimplifier::unsimplifiedRedCost(), SPxSimplifier::unsimplifiedSlacks(), SPxSimplifier::unsimplify(), SPxSimplifier::VANISHED, and SPxException::what().

Referenced by SoPlex::_evaluateSolutionReal().

◆ _switchRangeType()

SoPlex::RangeType _switchRangeType ( const RangeType & rangeType ) const

private

switches RANGETYPE_LOWER to RANGETYPE_UPPER and vice versa

Definition at line 7241 of file soplex.cpp.

References SoPlex::RANGETYPE_LOWER, and SoPlex::RANGETYPE_UPPER.

Referenced by SoPlex::_transformEquality(), and SoPlex::_untransformEquality().

◆ _syncLPRational()

void _syncLPRational ( bool time = true )

private

synchronizes rational LP with real LP, i.e., copies real LP to rational LP, without looking at the sync mode

Definition at line 8232 of file soplex.cpp.

References SoPlex::_ensureRationalLP(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_recomputeRangeTypesRational(), SoPlex::_statistics, Timer::start(), Timer::stop(), and SoPlex::Statistics::syncTime.

Referenced by SoPlex::_readFileReal(), SoPlex::getBoundViolationRational(), SoPlex::getDualViolationRational(), SoPlex::getRedCostViolationRational(), SoPlex::getRowViolationRational(), SoPlex::optimize(), SoPlex::setIntParam(), and SoPlex::syncLPRational().

◆ _syncLPReal()

void _syncLPReal ( bool time = true )

private

synchronizes real LP with rational LP, i.e., copies (rounded) rational LP into real LP, without looking at the sync mode

Todo:: try loading old basis

Definition at line 8208 of file soplex.cpp.

References SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_solver, SoPlex::_statistics, SLUFactorRational::clear(), SPxSolver::loadLP(), Timer::start(), Timer::stop(), and SoPlex::Statistics::syncTime.

Referenced by SoPlex::_readFileRational(), and SoPlex::syncLPReal().

◆ _syncRationalSolution()

void _syncRationalSolution ( )

private

synchronizes rational solution with real solution, i.e., copies (rounded) rational solution to real solution

Definition at line 8263 of file soplex.cpp.

References SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_solRational, and SoPlex::_solReal.

◆ _syncRealSolution()

void _syncRealSolution ( )

private

synchronizes real solution with rational solution, i.e., copies real solution to rational solution

Definition at line 8251 of file soplex.cpp.

References SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_solRational, and SoPlex::_solReal.

Referenced by SoPlex::getBoundViolationReal(), SoPlex::getDualFarkasReal(), SoPlex::getDualReal(), SoPlex::getDualViolationReal(), SoPlex::getPrimalRayReal(), SoPlex::getPrimalReal(), SoPlex::getRedCostReal(), SoPlex::getRedCostViolationReal(), SoPlex::getRowViolationReal(), SoPlex::getSlacksReal(), and SoPlex::objValueReal().

◆ _transformEquality()

void _transformEquality ( )

private

introduces slack variables to transform inequality constraints into equations for both rational and real LP, which should be in sync

Definition at line 1923 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SoPlex::_hasBasis, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalZero, SoPlex::_realLP, SoPlex::_rowTypes, SoPlex::_slackCols, SoPlex::_statistics, SoPlex::_switchRangeType(), SoPlex::_unitVectorRational(), LPColSetBase< R >::add(), SPxLPBase< R >::addCols(), DataArray< T >::append(), SPxSolver::BASIC, SPxLPBase< R >::changeLhs(), SPxLPBase< R >::changeRange(), SPxLPBase< R >::changeRhs(), SLUFactorRational::clear(), LPColSetBase< R >::clear(), LPColSetBase< R >::colVector(), SPxSolver::FIXED, SVectorBase< R >::index(), SPxLPBase< R >::lhs(), SoPlex::lhsRational(), MSG_DEBUG, MSG_INFO1, LPColSetBase< R >::num(), SoPlex::numRowsRational(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::RANGETYPE_FIXED, SPxLPBase< R >::rhs(), SoPlex::rhsRational(), SoPlex::spxout, Timer::start(), Timer::stop(), SoPlex::Statistics::transformTime, and SPxLPBase< R >::writeFile().

Referenced by SoPlex::_optimizeRational().

◆ _transformFeasibility()

void _transformFeasibility ( )

private

transforms LP to feasibility problem by removing the objective function, shifting variables, and homogenizing the right-hand side

Todo:: exploit this case by returning without LP solving

Definition at line 2392 of file solverational.cpp.

Referenced by SoPlex::_performFeasIRStable().

◆ _transformUnbounded()

void _transformUnbounded ( )

private

transforms LP to unboundedness problem by moving the objective function to the constraints, changing right-hand side and bounds to zero, and adding an auxiliary variable for the decrease in the objective function

Todo:: implement this without copying the objective function

Definition at line 2118 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SoPlex::_hasBasis, SoPlex::_lowerFinite(), SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::_realLP, SoPlex::_rowTypes, SoPlex::_statistics, SoPlex::_unboundedLhs, SoPlex::_unboundedLower, SoPlex::_unboundedRhs, SoPlex::_unboundedUpper, SoPlex::_upperFinite(), DSVectorBase< R >::add(), SPxLPBase< R >::addRow(), DataArray< T >::append(), SPxSolver::BASIC, SPxLPBase< R >::changeBounds(), SPxLPBase< R >::changeLhs(), SPxLPBase< R >::changeLower(), SPxLPBase< R >::changeMaxObj(), SPxLPBase< R >::changeObj(), SPxLPBase< R >::changeRhs(), SPxLPBase< R >::changeUpper(), SLUFactorRational::clear(), SoPlex::INFTY, SPxLPBase< R >::lhs(), SoPlex::lhsRational(), SPxLPBase< R >::lower(), SoPlex::lowerRational(), SPxLPBase< R >::maxObj(), MSG_DEBUG, MSG_INFO1, SoPlex::numColsRational(), SoPlex::numRowsRational(), SPxSolver::ON_UPPER, SoPlex::RANGETYPE_FIXED, SoPlex::RANGETYPE_UPPER, SoPlex::realParam(), DVectorBase< R >::reDim(), SPxLPBase< R >::rhs(), SoPlex::rhsRational(), SoPlex::spxout, Timer::start(), Timer::stop(), SoPlex::Statistics::transformTime, SPxLPBase< R >::upper(), SoPlex::upperRational(), and SPxLPBase< R >::writeFile().

Referenced by SoPlex::_performUnboundedIRStable().

◆ _unitVectorRational()

const UnitVectorRational * _unitVectorRational ( const int i )

private

returns pointer to a constant unit vector available until destruction of the SoPlex class

Definition at line 8275 of file soplex.cpp.

References SoPlex::_unitMatrixRational, and soplex::spx_alloc().

Referenced by SoPlex::_computeBasisInverseRational(), SoPlex::_transformEquality(), SoPlex::getBasisInverseColRational(), and SoPlex::getBasisInverseRowRational().

◆ _unscaleSolutionReal()

void _unscaleSolutionReal	(	SPxLPReal &	LP,
		bool	persistent = `true`
	)

private

unscales stored solution to remove internal or external scaling of LP

Definition at line 645 of file solvereal.cpp.

References SolBase< R >::_dual, SolBase< R >::_dualFarkas, SoPlex::_isRealLPScaled, SolBase< R >::_primal, SolBase< R >::_primalRay, SolBase< R >::_redCost, SoPlex::_scaler, SolBase< R >::_slacks, SoPlex::_solReal, SoPlex::boolParam(), SolBase< R >::hasDualFarkas(), SolBase< R >::hasPrimalRay(), MSG_INFO1, SoPlex::PERSISTENTSCALING, SoPlex::spxout, SPxScaler::unscaleDual(), SPxScaler::unscaleDualray(), SPxScaler::unscalePrimal(), SPxScaler::unscalePrimalray(), SPxScaler::unscaleRedCost(), and SPxScaler::unscaleSlacks().

Referenced by SoPlex::_storeSolutionReal(), and SoPlex::_storeSolutionRealFromPresol().

◆ _untransformEquality()

void _untransformEquality ( SolRational & sol )

private

undoes transformation to equality form

restores original problem

Definition at line 2002 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SolBase< R >::_dual, SoPlex::_hasBasis, SolBase< R >::_primal, SolBase< R >::_primalRay, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_realLP, SolBase< R >::_redCost, SoPlex::_rowTypes, SoPlex::_slackCols, SolBase< R >::_slacks, SoPlex::_statistics, SoPlex::_switchRangeType(), SPxSolver::BASIC, SPxLPBase< R >::changeLhs(), SPxLPBase< R >::changeRhs(), SLUFactorRational::clear(), LPColSetBase< R >::colVector(), SPxSolver::FIXED, SolBase< R >::hasPrimalRay(), SVectorBase< R >::index(), SolBase< R >::isDualFeasible(), SolBase< R >::isPrimalFeasible(), SPxLPBase< R >::lhs(), SoPlex::lhsRational(), SoPlex::lowerRational(), MSG_DEBUG, LPColSetBase< R >::num(), SoPlex::numColsRational(), SoPlex::numRowsRational(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, soplex::rationalToString(), DVectorBase< R >::reDim(), SPxLPBase< R >::removeColRange(), DataArray< T >::reSize(), SPxLPBase< R >::rhs(), SoPlex::rhsRational(), Timer::start(), Timer::stop(), SoPlex::Statistics::transformTime, SPxSolver::UNDEFINED, SoPlex::upperRational(), SPxLPBase< R >::writeFile(), and SPxSolver::ZERO.

Referenced by SoPlex::_optimizeRational().

◆ _untransformFeasibility()

void _untransformFeasibility	(	SolRational &	sol,
		bool	infeasible
	)

private

undoes transformation to feasibility problem

Definition at line 2658 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_colTypes, SolBase< R >::_dual, SolBase< R >::_dualFarkas, SoPlex::_feasLhs, SoPlex::_feasLower, SoPlex::_feasObj, SoPlex::_feasRhs, SoPlex::_feasUpper, SoPlex::_hasBasis, SolBase< R >::_hasDualFarkas, SolBase< R >::_hasPrimalRay, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_lowerFinite(), SolBase< R >::_primal, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::_realLP, SoPlex::_rowTypes, SolBase< R >::_slacks, SoPlex::_statistics, SoPlex::_upperFinite(), SPxSolver::BASIC, SPxLPBase< R >::changeLhs(), SPxLPBase< R >::changeLower(), SPxLPBase< R >::changeMaxObj(), SPxLPBase< R >::changeRhs(), SPxLPBase< R >::changeUpper(), SLUFactorRational::clear(), SPxLPBase< R >::colVector(), SPxLPBase< R >::computePrimalActivity(), SoPlex::INFTY, SPxLPBase< R >::lhs(), SoPlex::lhsRational(), SoPlex::lhsReal(), SPxLPBase< R >::lower(), SoPlex::lowerRational(), SoPlex::lowerReal(), MSG_DEBUG, VectorBase< R >::multAdd(), SoPlex::numColsRational(), SoPlex::numRowsRational(), SoPlex::realParam(), DVectorBase< R >::reDim(), SPxLPBase< R >::removeCol(), DataArray< T >::reSize(), SPxLPBase< R >::rhs(), SoPlex::rhsRational(), SoPlex::rhsReal(), Timer::start(), Timer::stop(), SoPlex::Statistics::transformTime, SPxLPBase< R >::upper(), SoPlex::upperRational(), SoPlex::upperReal(), and SPxLPBase< R >::writeFile().

Referenced by SoPlex::_performFeasIRStable().

◆ _untransformUnbounded()

void _untransformUnbounded	(	SolRational &	sol,
		bool	unbounded
	)

private

undoes transformation to unboundedness problem

Definition at line 2235 of file solverational.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_colTypes, SolBase< R >::_dual, SoPlex::_hasBasis, SolBase< R >::_hasDualFarkas, SolBase< R >::_hasPrimalRay, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_lowerFinite(), SolBase< R >::_primal, SolBase< R >::_primalRay, SoPlex::_rationalFeastol, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::_rationalPosone, SoPlex::_realLP, SolBase< R >::_redCost, SoPlex::_rowTypes, SoPlex::_statistics, SoPlex::_unboundedLhs, SoPlex::_unboundedLower, SoPlex::_unboundedRhs, SoPlex::_unboundedUpper, SoPlex::_upperFinite(), SPxSolver::BASIC, SoPlex::boolParam(), SPxLPBase< R >::changeLhs(), SPxLPBase< R >::changeLower(), SPxLPBase< R >::changeMaxObj(), SPxLPBase< R >::changeRhs(), SPxLPBase< R >::changeUpper(), SLUFactorRational::clear(), SVectorBase< R >::index(), SoPlex::INFTY, SolBase< R >::invalidate(), SoPlex::lhsRational(), SoPlex::lhsReal(), SoPlex::lowerRational(), SoPlex::lowerReal(), MSG_DEBUG, SoPlex::numColsRational(), SoPlex::numRowsRational(), SoPlex::realParam(), DVectorBase< R >::reDim(), SPxLPBase< R >::removeCol(), SPxLPBase< R >::removeRow(), DataArray< T >::reSize(), SoPlex::rhsRational(), SoPlex::rhsReal(), SPxLPBase< R >::rowVector(), SVectorBase< R >::size(), Timer::start(), Timer::stop(), SoPlex::TESTDUALINF, SoPlex::Statistics::transformTime, SoPlex::upperRational(), SoPlex::upperReal(), SVectorBase< R >::value(), and SPxLPBase< R >::writeFile().

Referenced by SoPlex::_performUnboundedIRStable().

◆ _updateComplementaryDualFixedPrimalVars()

void _updateComplementaryDualFixedPrimalVars ( int * currFixedVars )

private

updating the dual columns related to the fixed primal variables.

Definition at line 2904 of file solvedbds.cpp.

References SoPlex::_compSlackDualRowId, SoPlex::_compSolver, SoPlex::_decompCompProbColIDsIdx, SoPlex::_decompDualRowIDs, SoPlex::_decompFixedVarDualIDs, SoPlex::_decompReducedProbColRowIDs, SoPlex::_decompVarBoundDualIDs, SoPlex::_fixedOrigVars, SoPlex::_nPrimalCols, SoPlex::_realLP, SoPlex::_solver, DSVectorBase< R >::add(), LPColSetBase< R >::add(), SPxLPBase< R >::addCols(), SVectorBase< R >::clear(), soplex::GT(), soplex::infinity, DataKey::inValidate(), SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), soplex::LT(), SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SVectorBase< R >::remove(), SPxLPBase< R >::rhs(), SVectorBase< R >::size(), SLACKCOEFF, soplex::spx_alloc(), soplex::spx_free(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_updateDecompComplementaryDualProblem().

◆ _updateComplementaryDualSlackColCoeff()

void _updateComplementaryDualSlackColCoeff ( )

private

updating the slack column coefficients to adjust for equality constraints

Definition at line 2760 of file solvedbds.cpp.

References SoPlex::_compSolver, SoPlex::_decompDualColIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_nDualCols, SoPlex::_nPrimalRows, SoPlex::_realLP, SPxLPBase< R >::addCol(), SPxSolver::changeLower(), SPxLPBase< R >::colVector(), soplex::infinity, SPxLPBase< R >::lhs(), SPxLPBase< R >::number(), SPxLPBase< R >::rhs(), and SPxLPBase< R >::rowType().

Referenced by SoPlex::_formDecompComplementaryProblem().

◆ _updateComplementaryPrimalFixedPrimalVars()

void _updateComplementaryPrimalFixedPrimalVars ( int * currFixedVars )

private

updating the dual columns related to the fixed primal variables.

Definition at line 3070 of file solvedbds.cpp.

References SoPlex::_compSolver, SoPlex::_decompCompPrimalColIDs, SoPlex::_decompPrimalColIDs, SoPlex::_fixedOrigVars, SoPlex::_nCompPrimalCols, SoPlex::_realLP, SPxSolver::changeBounds(), soplex::infinity, SPxLPBase< R >::lower(), SPxLPBase< R >::number(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_updateDecompComplementaryPrimalProblem().

◆ _updateComplementaryPrimalSlackColCoeff()

void _updateComplementaryPrimalSlackColCoeff ( )

private

updating the slack column coefficients to adjust for equality constraints

◆ _updateDecompComplementaryDualProblem()

void _updateDecompComplementaryDualProblem ( bool origObj )

private

update the dual complementary problem with additional columns and rows

Definition at line 2070 of file solvedbds.cpp.

Referenced by SoPlex::_formDecompComplementaryProblem(), and SoPlex::_solveDecompositionDualSimplex().

◆ _updateDecompComplementaryPrimalProblem()

void _updateDecompComplementaryPrimalProblem ( bool origObj )

private

update the primal complementary problem with additional columns and rows

Definition at line 2449 of file solvedbds.cpp.

References SoPlex::_compSlackColId, SoPlex::_compSolver, SoPlex::_decompCompPrimalRowIDs, SoPlex::_decompElimPrimalRowIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_decompReducedProbRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_identifyComplementaryPrimalFixedPrimalVars(), SoPlex::_nCompPrimalRows, SoPlex::_nElimPrimalRows, SoPlex::_nPrimalRows, SoPlex::_realLP, SoPlex::_solver, SoPlex::_updateComplementaryPrimalFixedPrimalVars(), LPRowSetBase< R >::add(), SPxLPBase< R >::addRows(), SPxSolver::basis(), SPxSolver::changeCol(), SPxSolver::changeLhs(), SPxSolver::changeRhs(), SPxBasis::Desc::D_FREE, SPxBasis::Desc::D_ON_LOWER, SPxBasis::Desc::D_ON_UPPER, SPxBasis::desc(), soplex::EQ(), SoPlex::FEASTOL, SPxLPBase< R >::getRow(), soplex::GT(), soplex::infinity, SPxLPBase< R >::lhs(), soplex::LT(), MSG_INFO2, SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SPxLPBase< R >::number(), SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SPxSolver::pVec(), SoPlex::realParam(), SPxLPBase< R >::removeRows(), SPxLPBase< R >::rhs(), SPxSolver::rowId(), SPxBasis::Desc::rowStatus(), SPxLPBase< R >::rowType(), LPRowBase< R >::rowVector(), SLACKCOEFF, soplex::spx_alloc(), soplex::spx_free(), and SoPlex::spxout.

Referenced by SoPlex::_formDecompComplementaryProblem(), and SoPlex::_solveDecompositionDualSimplex().

◆ _updateDecompReducedProblem()

void _updateDecompReducedProblem	(	Real	objVal,
		DVector	dualVector,
		DVector	redcostVector,
		DVector	compPrimalVector,
		DVector	compDualVector
	)

private

update the reduced problem with additional columns and rows

updates the reduced problem with additional rows using the solution to the complementary problem

Definition at line 1116 of file solvedbds.cpp.

References SoPlex::_compSolver, SoPlex::_decompCompPrimalRowIDs, SoPlex::_decompDualColIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_decompReducedProbRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_findViolatedRows(), SoPlex::_nPrimalRows, SoPlex::_realLP, SoPlex::_solver, SoPlex::_transformedRows, LPRowSetBase< R >::add(), SPxLPBase< R >::addRows(), SoPlex::boolParam(), SoPlex::DECOMP_MAXADDEDROWS, SoPlex::RowViolationCompare::entry, soplex::EQ(), SoPlex::FEASTOL, soplex::GE(), DataArray< T >::get_const_ptr(), DataArray< T >::get_ptr(), SoPlex::getExpectedDualVariableSign(), SoPlex::getOrigProbDualVariableSign(), SPxSolver::getRedCost(), soplex::GT(), soplex::infinity, SoPlex::intParam(), SoPlex::IS_FREE, SoPlex::IS_NEG, SoPlex::IS_POS, SPxSolver::isBasic(), soplex::isZero(), soplex::LE(), LPRowSetBase< R >::lhs(), soplex::LT(), MINIMUM, MSG_WARNING, SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SoPlex::numIncludedRows, SoPlex::realParam(), DataArray< T >::reSize(), LPRowSetBase< R >::rhs(), LPRowSetBase< R >::rowVector(), soplex::spx_alloc(), soplex::spx_free(), soplex::spxAbs(), SoPlex::spxout, soplex::SPxQuicksortPart(), and SoPlex::USECOMPDUAL.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _updateDecompReducedProblemViol()

void _updateDecompReducedProblemViol ( bool allrows )

private

update the reduced problem with additional columns and rows based upon the violated original bounds and rows

Definition at line 1311 of file solvedbds.cpp.

References SoPlex::_decompReducedProbRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_decompViolatedRows, SoPlex::_nDecompViolRows, SoPlex::_nPrimalRows, SoPlex::_solver, SoPlex::_transformedRows, LPRowSetBase< R >::add(), SPxLPBase< R >::addRows(), SPxSolver::basis(), SoPlex::DECOMP_MAXADDEDROWS, SoPlex::EPSILON_ZERO, SoPlex::FEASTOL, SPxSolver::fVec(), soplex::infinity, SoPlex::intParam(), soplex::isZero(), LPRowSetBase< R >::lhs(), soplex::LT(), MINIMUM, MSG_ERROR, SPxLPBase< R >::nCols(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SoPlex::realParam(), LPRowSetBase< R >::rhs(), LPRowSetBase< R >::rowVector(), SPxBasis::solve(), soplex::spx_alloc(), soplex::spx_free(), soplex::spxAbs(), SoPlex::spxout, soplex::spxSqrt(), SSVectorBase< R >::unSetup(), SPxSolver::vector(), and SPxException::what().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ _upperFinite()

bool _upperFinite ( const RangeType & rangeType ) const

private

checks whether RangeType corresponds to finite upper bound

Definition at line 7262 of file soplex.cpp.

References SoPlex::RANGETYPE_BOXED, SoPlex::RANGETYPE_FIXED, and SoPlex::RANGETYPE_UPPER.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_performOptIRStable(), SoPlex::_reconstructSolutionRational(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformFeasibility(), and SoPlex::_untransformUnbounded().

◆ _verifySolutionReal()

void _verifySolutionReal ( )

private

verify computed solution and resolve if necessary

verify computed solution based on status and resolve if claimed primal or dual feasibility is not fulfilled

Definition at line 359 of file solvereal.cpp.

References SoPlex::_hasSolReal, SolBase< R >::_isDualFeasible, SolBase< R >::_isPrimalFeasible, SoPlex::_isRealLPLoaded, SoPlex::_isRealLPScaled, SoPlex::_preprocessAndSolveReal(), SoPlex::_realLP, SoPlex::_solReal, SoPlex::_solver, SoPlex::_unscaleCalls, SPxSolver::feastol(), SoPlex::getBoundViolationReal(), SoPlex::getDualViolationReal(), SoPlex::getRedCostViolationReal(), SoPlex::getRowViolationReal(), MSG_INFO1, MSG_INFO3, SPxSolver::opttol(), SoPlex::spxout, and SPxSolver::unscaleLPandReloadBasis().

Referenced by SoPlex::_storeSolutionReal(), and SoPlex::_storeSolutionRealFromPresol().

◆ _writeOriginalProblemBasis()

void _writeOriginalProblemBasis	(	const char *	filename,
		NameSet *	rowNames,
		NameSet *	colNames,
		bool	cpxFormat
	)

private

function to build a basis for the original problem as given by the solution to the reduced problem

Definition at line 4028 of file solvedbds.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SPxSolver::BASIC, SoPlex::getOriginalProblemBasisColStatus(), SoPlex::getOriginalProblemBasisRowStatus(), SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), DataArray< T >::reSize(), and SoPlex::writeBasisFile().

◆ addColRational()

void addColRational ( const LPColRational & lpcol )

◆ addColReal()

void addColReal ( const LPCol & lpcol )

adds a single column

Definition at line 1340 of file soplex.cpp.

References SoPlex::_addColReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::addCol(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

Referenced by main().

◆ addColsRational()

void addColsRational ( const LPColSetRational & lpcolset )

adds multiple columns

Definition at line 2050 of file soplex.cpp.

References SoPlex::_addColsReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SPxLPBase< R >::addCols(), SoPlex::intParam(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::addColRational().

◆ addColsReal()

void addColsReal ( const LPColSetReal & lpcolset )

adds multiple columns

Definition at line 1358 of file soplex.cpp.

References SoPlex::_addColsReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::addCols(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ addRowRational()

void addRowRational ( const LPRowRational & lprow )

adds a single row

Definition at line 1899 of file soplex.cpp.

References SoPlex::_addRowReal(), SoPlex::_addRowsReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, LPRowSetBase< R >::add(), SPxLPBase< R >::addRow(), SPxLPBase< R >::addRows(), SoPlex::addRowsRational(), SoPlex::intParam(), SoPlex::lhsRational(), SoPlex::numRowsRational(), SoPlex::rhsRational(), SPxLPBase< R >::rowVector(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ addRowReal()

void addRowReal ( const LPRowReal & lprow )

adds a single row

Definition at line 1304 of file soplex.cpp.

References SoPlex::_addRowReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::addRow(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

Referenced by main().

◆ addRowsRational()

void addRowsRational ( const LPRowSetRational & lprowset )

adds multiple rows

Definition at line 1964 of file soplex.cpp.

References SoPlex::_addRowsReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SPxLPBase< R >::addRows(), SoPlex::intParam(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::addRowRational().

◆ addRowsReal()

void addRowsReal ( const LPRowSetReal & lprowset )

adds multiple rows

Definition at line 1322 of file soplex.cpp.

References SoPlex::_addRowsReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::addRows(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ areLPsInSync()

bool areLPsInSync	(	const bool	checkVecVals = `true`,
		const bool	checkMatVals = `false`,
		const bool	quiet = `false`
	)		const

checks if real LP and rational LP are in sync; dimensions will always be compared, vector and matrix values only if the respective parameter is set to true. If quiet is set to true the function will only display which vectors are different.

Definition at line 6832 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::_realLP, SPxLPBase< R >::colVector(), soplex::GE(), soplex::GT(), SoPlex::INFTY, soplex::LE(), SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), soplex::LT(), SPxLPBase< R >::maxObj(), SPxLPBase< R >::MINIMIZE, SPxLPBase< Real >::MINIMIZE, MSG_INFO1, SPxLPBase< R >::nCols(), SPxLPBase< R >::nNzos(), SPxLPBase< R >::nRows(), SoPlex::realParam(), SPxLPBase< R >::rhs(), SoPlex::spxout, SPxLPBase< R >::spxSense(), and SPxLPBase< R >::upper().

Referenced by SoPlex::optimize().

◆ basisColStatus()

SPxSolver::VarStatus basisColStatus ( int col ) const

returns basis status for a single column

Definition at line 3882 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_isRealLPLoaded, SoPlex::_solver, SPxSolver::getBasisColStatus(), SoPlex::hasBasis(), SoPlex::INFTY, SoPlex::lowerReal(), SoPlex::numColsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), DataArray< T >::size(), SoPlex::upperReal(), and SPxSolver::ZERO.

Referenced by SoPlex::getRedCostViolationRational(), SoPlex::getRedCostViolationReal(), and SoPlex::solve().

◆ basisRowStatus()

SPxSolver::VarStatus basisRowStatus ( int row ) const

returns basis status for a single row

Definition at line 3857 of file soplex.cpp.

References SoPlex::_basisStatusRows, SoPlex::_isRealLPLoaded, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::getBasisRowStatus(), SoPlex::hasBasis(), SoPlex::numRowsReal(), and DataArray< T >::size().

Referenced by SoPlex::getDualViolationRational(), SoPlex::getDualViolationReal(), and SoPlex::solve().

◆ basisStatus()

SPxBasis::SPxStatus basisStatus ( ) const

returns the current basis status

Definition at line 3836 of file soplex.cpp.

References SPxBasis::DUAL, SoPlex::hasBasis(), SoPlex::hasDual(), SoPlex::hasPrimal(), SPxBasis::INFEASIBLE, SPxSolver::INFEASIBLE, SPxBasis::NO_PROBLEM, SPxBasis::OPTIMAL, SPxSolver::OPTIMAL, SPxBasis::PRIMAL, SPxBasis::REGULAR, SoPlex::status(), SPxBasis::UNBOUNDED, and SPxSolver::UNBOUNDED.

Referenced by SoPlex::solve().

◆ boolParam()

bool boolParam ( const BoolParam param ) const

◆ changeBoundsRational() [1/2]

void changeBoundsRational	(	const VectorRational &	lower,
		const VectorRational &	upper
	)

changes vectors of column bounds to lower and upper

Definition at line 2412 of file soplex.cpp.

References SoPlex::_changeBoundsReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeBounds(), SoPlex::intParam(), SoPlex::numColsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::changeBoundsRational().

◆ changeBoundsRational() [2/2]

void changeBoundsRational	(	int	i,
		const Rational &	lower,
		const Rational &	upper
	)

changes bounds of column i to lower and upper

Definition at line 2432 of file soplex.cpp.

References SoPlex::_changeBoundsReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeBounds(), SoPlex::changeBoundsRational(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::lowerRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, SPxLPBase< R >::upper(), and SoPlex::upperRational().

◆ changeBoundsReal() [1/2]

void changeBoundsReal	(	const VectorReal &	lower,
		const VectorReal &	upper
	)

changes vectors of column bounds to lower and upper

Definition at line 1600 of file soplex.cpp.

References SoPlex::_changeBoundsReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeReal(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeBounds(), SoPlex::intParam(), SoPlex::numColsRational(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeBoundsReal() [2/2]

void changeBoundsReal	(	int	i,
		const Real &	lower,
		const Real &	upper
	)

changes bounds of column i to lower and upper

Definition at line 1619 of file soplex.cpp.

References SoPlex::_changeBoundsReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeReal(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeBounds(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeColRational()

void changeColRational	(	int	i,
		const LPColRational &	lpcol
	)

replaces column i with lpcol

Definition at line 2272 of file soplex.cpp.

References SoPlex::_changeColReal(), SoPlex::_colTypes, SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeCol(), SoPlex::intParam(), LPColBase< R >::lower(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, and LPColBase< R >::upper().

◆ changeColReal()

void changeColReal	(	int	i,
		const LPColReal &	lpcol
	)

replaces column i with lpcol

Definition at line 1506 of file soplex.cpp.

References SoPlex::_changeColReal(), SoPlex::_colTypes, SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeReal(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeCol(), SoPlex::intParam(), LPColBase< R >::lower(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and LPColBase< R >::upper().

◆ changeElementRational()

void changeElementRational	(	int	i,
		int	j,
		const Rational &	val
	)

changes matrix entry in row i and column j to val

Definition at line 2528 of file soplex.cpp.

References SoPlex::_changeElementReal(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SPxLPBase< R >::changeElement(), SoPlex::intParam(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeElementReal()

void changeElementReal	(	int	i,
		int	j,
		const Real &	val
	)

changes matrix entry in row i and column j to val

Definition at line 1668 of file soplex.cpp.

References SoPlex::_changeElementReal(), SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeElement(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeLhsRational() [1/2]

void changeLhsRational ( const VectorRational & lhs )

changes left-hand side vector for constraints to lhs

Definition at line 2089 of file soplex.cpp.

References SoPlex::_changeLhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeLhs(), SoPlex::intParam(), SoPlex::numRowsRational(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::changeLhsRational().

◆ changeLhsRational() [2/2]

void changeLhsRational	(	int	i,
		const Rational &	lhs
	)

changes left-hand side of row i to lhs

Definition at line 2109 of file soplex.cpp.

References SoPlex::_changeLhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeLhs(), SoPlex::changeLhsRational(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SoPlex::lhsRational(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeLhsReal() [1/2]

void changeLhsReal ( const VectorReal & lhs )

changes left-hand side vector for constraints to lhs

Definition at line 1395 of file soplex.cpp.

References SoPlex::_changeLhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeLhs(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SoPlex::numRowsRational(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeLhsReal() [2/2]

void changeLhsReal	(	int	i,
		const Real &	lhs
	)

changes left-hand side of row i to lhs

Definition at line 1414 of file soplex.cpp.

References SoPlex::_changeLhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeLhs(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeLowerRational() [1/2]

void changeLowerRational ( const VectorRational & lower )

changes vector of lower bounds to lower

Definition at line 2292 of file soplex.cpp.

References SoPlex::_changeLowerReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeLower(), SoPlex::intParam(), SoPlex::numColsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, and SPxLPBase< R >::upper().

Referenced by SoPlex::changeLowerRational().

◆ changeLowerRational() [2/2]

void changeLowerRational	(	int	i,
		const Rational &	lower
	)

changes lower bound of column i to lower

Definition at line 2312 of file soplex.cpp.

References SoPlex::_changeLowerReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeLower(), SoPlex::changeLowerRational(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::lowerRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, and SPxLPBase< R >::upper().

◆ changeLowerReal() [1/2]

void changeLowerReal ( const VectorReal & lower )

changes vector of lower bounds to lower

Definition at line 1525 of file soplex.cpp.

References SoPlex::_changeLowerReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeLower(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::numColsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SPxLPBase< R >::upper().

◆ changeLowerReal() [2/2]

void changeLowerReal	(	int	i,
		const Real &	lower
	)

changes lower bound of column i to lower

Definition at line 1545 of file soplex.cpp.

References SoPlex::_changeLowerReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeLower(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SPxLPBase< R >::upper().

◆ changeObjRational() [1/2]

void changeObjRational ( const VectorRational & obj )

changes objective function vector to obj

Definition at line 2472 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeObj(), SoPlex::intParam(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::changeObjRational().

◆ changeObjRational() [2/2]

void changeObjRational	(	int	i,
		const Rational &	obj
	)

changes objective coefficient of column i to obj

Definition at line 2490 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeObj(), SoPlex::changeObjRational(), SoPlex::intParam(), SoPlex::objRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeObjReal() [1/2]

void changeObjReal ( const VectorReal & obj )

changes objective function vector to obj

Definition at line 1636 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeObj(), SoPlex::intParam(), SPxLPBase< R >::isScaled(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeObjReal() [2/2]

void changeObjReal	(	int	i,
		const Real &	obj
	)

changes objective coefficient of column i to obj

Definition at line 1652 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeObj(), SoPlex::intParam(), SPxLPBase< R >::isScaled(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeRangeRational() [1/2]

void changeRangeRational	(	const VectorRational &	lhs,
		const VectorRational &	rhs
	)

changes left- and right-hand side vectors

Definition at line 2212 of file soplex.cpp.

References SoPlex::_changeRangeReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRange(), SoPlex::intParam(), SoPlex::numRowsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::changeRangeRational().

◆ changeRangeRational() [2/2]

void changeRangeRational	(	int	i,
		const Rational &	lhs,
		const Rational &	rhs
	)

changes left- and right-hand side of row i

Definition at line 2232 of file soplex.cpp.

References SoPlex::_changeRangeReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRange(), SoPlex::changeRangeRational(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SoPlex::lhsRational(), SPxLPBase< R >::rhs(), SoPlex::rhsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeRangeReal() [1/2]

void changeRangeReal	(	const VectorReal &	lhs,
		const VectorReal &	rhs
	)

changes left- and right-hand side vectors

Definition at line 1469 of file soplex.cpp.

References SoPlex::_changeRangeReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeReal(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRange(), SoPlex::intParam(), SoPlex::numRowsRational(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeRangeReal() [2/2]

void changeRangeReal	(	int	i,
		const Real &	lhs,
		const Real &	rhs
	)

changes left- and right-hand side of row i

Definition at line 1488 of file soplex.cpp.

References SoPlex::_changeRangeReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeReal(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRange(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeRhsRational() [1/2]

void changeRhsRational ( const VectorRational & rhs )

changes right-hand side vector to rhs

Definition at line 2149 of file soplex.cpp.

References SoPlex::_changeRhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRhs(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SoPlex::numRowsRational(), SPxLPBase< R >::rhs(), SoPlex::rhsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeRhsRational() [2/2]

void changeRhsRational	(	int	i,
		const Rational &	rhs
	)

changes right-hand side of row i to rhs

Definition at line 2193 of file soplex.cpp.

References SoPlex::_changeRhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRhs(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeRhsReal() [1/2]

void changeRhsReal ( const VectorReal & rhs )

changes right-hand side vector to rhs

Definition at line 1432 of file soplex.cpp.

References SoPlex::_changeRhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRhs(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SoPlex::numRowsRational(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeRhsReal() [2/2]

void changeRhsReal	(	int	i,
		const Real &	rhs
	)

changes right-hand side of row i to rhs

Definition at line 1451 of file soplex.cpp.

References SoPlex::_changeRhsReal(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRhs(), SoPlex::intParam(), SPxLPBase< R >::lhs(), SPxLPBase< R >::rhs(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeRowRational()

void changeRowRational	(	int	i,
		const LPRowRational &	lprow
	)

replaces row i with lprow

Definition at line 2069 of file soplex.cpp.

References SoPlex::_changeRowReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRow(), SoPlex::intParam(), LPRowBase< R >::lhs(), LPRowBase< R >::rhs(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ changeRowReal()

void changeRowReal	(	int	i,
		const LPRowReal &	lprow
	)

replaces row i with lprow

Definition at line 1376 of file soplex.cpp.

References SoPlex::_changeRowReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_invalidateSolution(), SoPlex::_rangeTypeReal(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_rowTypes, SPxLPBase< R >::changeRow(), SoPlex::intParam(), LPRowBase< R >::lhs(), LPRowBase< R >::rhs(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ changeUpperRational() [1/2]

void changeUpperRational ( const VectorRational & upper )

changes vector of upper bounds to upper

Definition at line 2352 of file soplex.cpp.

References SoPlex::_changeUpperReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeUpper(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::numColsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::changeUpperRational().

◆ changeUpperRational() [2/2]

void changeUpperRational	(	int	i,
		const Rational &	upper
	)

changes i 'th upper bound to upper

Definition at line 2372 of file soplex.cpp.

References SoPlex::_changeUpperReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SPxLPBase< R >::changeUpper(), SoPlex::changeUpperRational(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, SPxLPBase< R >::upper(), and SoPlex::upperRational().

◆ changeUpperReal() [1/2]

void changeUpperReal ( const VectorReal & upper )

changes vector of upper bounds to upper

Definition at line 1563 of file soplex.cpp.

References SoPlex::_changeUpperReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeUpper(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::numColsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SPxLPBase< R >::upper().

◆ changeUpperReal() [2/2]

void changeUpperReal	(	int	i,
		const Real &	upper
	)

changes i 'th upper bound to upper

Definition at line 1582 of file soplex.cpp.

References SoPlex::_changeUpperReal(), SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SPxLPBase< R >::changeUpper(), SoPlex::intParam(), SPxLPBase< R >::lower(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SPxLPBase< R >::upper().

◆ checkBasisDualFeasibility()

bool checkBasisDualFeasibility ( Vector feasVec )

private

checks the dual feasibility of the current basis

Definition at line 3331 of file solvedbds.cpp.

References SoPlex::_solver, SPxBasis::baseId(), SPxSolver::basis(), SPxBasis::Desc::colStatus(), SPxBasis::desc(), SoPlex::FEASTOL, soplex::GT(), SPxId::isSPxColId(), SPxId::isSPxRowId(), soplex::LT(), SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SoPlex::realParam(), SPxSolver::rep(), SPxSolver::ROW, SPxBasis::Desc::rowStatus(), and SPxLPBase< R >::spxSense().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ clearBasis()

void clearBasis ( )

clears starting basis

Definition at line 4988 of file soplex.cpp.

References SoPlex::_hasBasis, SoPlex::_rationalLUSolver, SoPlex::_solver, SoPlex::_status, SLUFactorRational::clear(), SPxSolver::reLoad(), and SPxSolver::status().

Referenced by SoPlex::_readFileRational(), SoPlex::_readFileReal(), SoPlex::readBasisFile(), and SoPlex::solve().

◆ clearLPRational()

void clearLPRational ( )

clears the LP

Definition at line 2753 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_hasBasis, SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_rowTypes, SLUFactorRational::clear(), DataArray< T >::clear(), SPxLPBase< R >::clear(), SoPlex::intParam(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::_readFileRational().

◆ clearLPReal()

void clearLPReal ( )

clears the LP

Definition at line 1867 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_hasBasis, SoPlex::_invalidateSolution(), SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_realLP, SoPlex::_rowTypes, SLUFactorRational::clear(), DataArray< T >::clear(), SPxLPBase< R >::clear(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

Referenced by SoPlex::_readFileReal().

◆ coefReal()

Real coefReal	(	int	row,
		int	col
	)		const

returns (unscaled) coefficient

Definition at line 829 of file soplex.cpp.

References SoPlex::_realLP, SoPlex::_scaler, SoPlex::colVectorRealInternal(), SPxScaler::getCoefUnscaled(), and SPxLPBase< R >::isScaled().

◆ colVectorRational()

const SVectorRational & colVectorRational ( int i ) const

returns vector of column i

Definition at line 1211 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::colVector().

Referenced by SoPlex::_computeBasisInverseRational(), SoPlex::_factorizeColumnRational(), SoPlex::_lift(), and SoPlex::_transformFeasibility().

◆ colVectorRealInternal()

const SVectorReal & colVectorRealInternal ( int i ) const

returns vector of col i, ignoring scaling

Definition at line 932 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::colVector().

Referenced by SoPlex::coefReal().

◆ computeBasisInverseRational()

bool computeBasisInverseRational ( )

compute rational basis inverse; returns true on success

Definition at line 4841 of file soplex.cpp.

References SoPlex::_computeBasisInverseRational(), SoPlex::_rationalLUSolver, SoPlex::_rationalLUSolverBind, SLUFactorRational::clear(), DataArray< T >::get_ptr(), SoPlex::getBasisInd(), SoPlex::hasBasis(), SoPlex::numRowsRational(), SLinSolverRational::OK, DataArray< T >::reSize(), SLUFactorRational::status(), SLinSolverRational::TIME, and SLinSolverRational::UNLOADED.

Referenced by SoPlex::getBasisIndRational(), SoPlex::getBasisInverseColRational(), SoPlex::getBasisInverseRowRational(), SoPlex::getBasisInverseTimesVecRational(), and SoPlex::solve().

◆ decompTerminate()

bool decompTerminate ( Real timeLimit )

private

function call to terminate the decomposition simplex

Definition at line 3760 of file solvedbds.cpp.

References SoPlex::_solver, SoPlex::_statistics, SPxSolver::ABORT_TIME, SPxSolver::getMaxTime(), soplex::infinity, MSG_INFO2, SPxSolver::setSolverStatus(), SoPlex::Statistics::solvingTime, SoPlex::spxout, and Timer::time().

Referenced by SoPlex::_computeReducedProbObjCoeff(), SoPlex::_getCompatibleBoundCons(), SoPlex::_getCompatibleColumns(), SoPlex::_getZeroDualMultiplierIndices(), and SoPlex::_solveDecompositionDualSimplex().

◆ dlcmSizeDualRational()

int dlcmSizeDualRational ( const int base = 2 )

get size of least common multiple of denominators in dual solution

Definition at line 3786 of file soplex.cpp.

References SoPlex::_solRational, SoPlex::_syncRationalSolution(), SolBase< R >::dlcmSizeDual(), SoPlex::hasDual(), and SoPlex::hasDualFarkas().

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ dlcmSizePrimalRational()

int dlcmSizePrimalRational ( const int base = 2 )

get size of least common multiple of denominators in primal solution

Definition at line 3772 of file soplex.cpp.

References SoPlex::_solRational, SoPlex::_syncRationalSolution(), SolBase< R >::dlcmSizePrimal(), SoPlex::hasPrimal(), and SoPlex::hasPrimalRay().

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ dmaxSizeDualRational()

int dmaxSizeDualRational ( const int base = 2 )

get size of largest denominator in dual solution

Definition at line 3814 of file soplex.cpp.

References SoPlex::_solRational, SoPlex::_syncRationalSolution(), SolBase< R >::dmaxSizeDual(), SoPlex::hasDual(), and SoPlex::hasDualFarkas().

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ dmaxSizePrimalRational()

int dmaxSizePrimalRational ( const int base = 2 )

get size of largest denominator in primal solution

Definition at line 3800 of file soplex.cpp.

References SoPlex::_solRational, SoPlex::_syncRationalSolution(), SolBase< R >::dmaxSizePrimal(), SoPlex::hasPrimal(), and SoPlex::hasPrimalRay().

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getBasis()

void getBasis	(	SPxSolver::VarStatus	rows[],
		SPxSolver::VarStatus	cols[]
	)		const

gets current basis via arrays of statuses

gets current basis

Definition at line 3918 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_isRealLPLoaded, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::getBasis(), SoPlex::hasBasis(), SoPlex::INFTY, SoPlex::lowerReal(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::realParam(), DataArray< T >::size(), SoPlex::upperReal(), and SPxSolver::ZERO.

Referenced by SoPlex::solve().

◆ getBasisInd()

void getBasisInd ( int * bind ) const

gets the indices of the basic columns and rows; basic column n gives value n, basic row m gives value -1-m

returns the indices of the basic columns and rows; basic column n gives value n, basic row m gives value -1-m

Definition at line 3958 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_isRealLPLoaded, SoPlex::_solver, SPxBasis::baseId(), SPxSolver::BASIC, SPxSolver::basis(), SPxSolver::COLUMN, SoPlex::hasBasis(), SPxSolver::isColBasic(), SPxSolver::isRowBasic(), SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::rep(), SPxSolver::ROW, and DataArray< T >::size().

Referenced by SoPlex::computeBasisInverseRational(), SoPlex::getBasisInverseColReal(), SoPlex::getBasisInverseRowReal(), SoPlex::getBasisInverseTimesVecReal(), SoPlex::multBasis(), SoPlex::multBasisTranspose(), and SoPlex::solve().

◆ getBasisIndRational()

bool getBasisIndRational ( DataArray< int > & bind )

gets an array of indices for the columns of the rational basis matrix; bind[i] >= 0 means that the i-th column of the basis matrix contains variable bind[i]; bind[i] < 0 means that the i-th column of the basis matrix contains the slack variable for row -bind[i]-1; performs rational factorization if not available; returns true on success

Definition at line 4869 of file soplex.cpp.

References SoPlex::_rationalLUSolver, SoPlex::_rationalLUSolverBind, SoPlex::computeBasisInverseRational(), SoPlex::numRowsRational(), SLinSolverRational::OK, DataArray< T >::size(), and SLUFactorRational::status().

Referenced by SoPlex::solve().

◆ getBasisInverseColRational()

bool getBasisInverseColRational	(	const int	c,
		SSVectorRational &	vec
	)

computes column c of basis inverse; performs rational factorization if not available; returns true on success

Definition at line 4909 of file soplex.cpp.

References SoPlex::_rationalLUSolver, SoPlex::_unitVectorRational(), SoPlex::computeBasisInverseRational(), MSG_INFO1, SoPlex::numRowsRational(), SLinSolverRational::OK, SSVectorBase< R >::reDim(), SLUFactorRational::solveRight(), SoPlex::spxout, SLUFactorRational::status(), and SPxException::what().

Referenced by SoPlex::solve().

◆ getBasisInverseColReal()

bool getBasisInverseColReal	(	int	c,
		Real *	coef,
		int *	inds = `NULL`,
		int *	ninds = `NULL`,
		bool	unscale = `true`
	)

computes column c of basis inverse; returns true on success

computes column c of basis inverse; returns true on success

Parameters

unscale determines whether the result should be unscaled according to the original LP data

Todo:: does not work correctly for the row representation

Definition at line 4253 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_scaler, SoPlex::_solver, SPxBasis::baseId(), SPxSolver::basis(), SPxSolver::COLUMN, SPxBasis::coSolve(), SoPlex::getBasisInd(), SPxScaler::getColScaleExp(), SPxScaler::getRowScaleExp(), SoPlex::hasBasis(), SSVectorBase< R >::index(), SPxSolver::isColBasic(), SPxSolver::isRowBasic(), SPxLPBase< R >::isScaled(), MSG_INFO1, SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::rep(), SPxSolver::ROW, SPxLPBase< R >::rowVector(), SSVectorBase< R >::scaleValue(), SSVectorBase< R >::setup(), SSVectorBase< R >::setValue(), SSVectorBase< R >::size(), SPxBasis::solve(), soplex::spx_alloc(), soplex::spx_free(), soplex::spxLdexp(), SoPlex::spxout, SPxSolver::unitVector(), SSVectorBase< R >::value(), and SPxException::what().

Referenced by SoPlex::_checkBasisScaling(), and SoPlex::solve().

◆ getBasisInverseRowRational()

bool getBasisInverseRowRational	(	const int	r,
		SSVectorRational &	vec
	)

computes row r of basis inverse; performs rational factorization if not available; returns true on success

Definition at line 4885 of file soplex.cpp.

References SoPlex::_rationalLUSolver, SoPlex::_unitVectorRational(), SoPlex::computeBasisInverseRational(), MSG_INFO1, SoPlex::numRowsRational(), SLinSolverRational::OK, SSVectorBase< R >::reDim(), SLUFactorRational::solveLeft(), SoPlex::spxout, SLUFactorRational::status(), and SPxException::what().

Referenced by SoPlex::solve().

◆ getBasisInverseRowReal()

bool getBasisInverseRowReal	(	int	r,
		Real *	coef,
		int *	inds = `NULL`,
		int *	ninds = `NULL`,
		bool	unscale = `true`
	)

computes row r of basis inverse; returns true on success

computes row r of basis inverse; returns true on success

Parameters

unscale determines whether the result should be unscaled according to the original LP data

Definition at line 4067 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_scaler, SoPlex::_solver, SPxBasis::baseId(), SPxSolver::basis(), SPxSolver::COLUMN, SPxBasis::coSolve(), SoPlex::getBasisInd(), SPxScaler::getColScaleExp(), SPxScaler::getRowScaleExp(), SoPlex::hasBasis(), SSVectorBase< R >::index(), SPxSolver::isColBasic(), SPxSolver::isRowBasic(), SPxLPBase< R >::isScaled(), SPxId::isSPxColId(), MSG_INFO1, SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::rep(), SPxSolver::ROW, SPxLPBase< R >::rowVector(), SSVectorBase< R >::scaleValue(), SSVectorBase< R >::setup(), SSVectorBase< R >::size(), SPxBasis::solve(), soplex::spx_alloc(), soplex::spx_free(), soplex::spxLdexp(), SoPlex::spxout, SPxSolver::unitVector(), SVectorBase< R >::value(), and SPxException::what().

Referenced by SoPlex::_checkBasisScaling(), and SoPlex::solve().

◆ getBasisInverseTimesVecRational()

bool getBasisInverseTimesVecRational	(	const SVectorRational &	rhs,
		SSVectorRational &	sol
	)

computes solution of basis matrix B * sol = rhs; performs rational factorization if not available; returns true on success

Definition at line 4934 of file soplex.cpp.

References SoPlex::_rationalLUSolver, SoPlex::computeBasisInverseRational(), MSG_INFO1, SoPlex::numRowsRational(), SLinSolverRational::OK, SSVectorBase< R >::reDim(), SLUFactorRational::solveRight(), SoPlex::spxout, SLUFactorRational::status(), and SPxException::what().

Referenced by SoPlex::solve().

◆ getBasisInverseTimesVecReal()

bool getBasisInverseTimesVecReal	(	Real *	rhs,
		Real *	sol,
		bool	unscale = `true`
	)

computes dense solution of basis matrix B * sol = rhs; returns true on success

computes dense solution of basis matrix B * sol = rhs; returns true on success

Definition at line 4458 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_scaler, SoPlex::_solver, SPxBasis::baseId(), SPxSolver::basis(), SPxSolver::COLUMN, SPxBasis::coSolve(), VectorBase< R >::dim(), SSVectorBase< R >::get_ptr(), SoPlex::getBasisInd(), SPxScaler::getColScaleExp(), SPxScaler::getRowScaleExp(), SoPlex::hasBasis(), SPxSolver::isColBasic(), soplex::isNotZero(), SPxSolver::isRowBasic(), SPxLPBase< R >::isScaled(), SPxId::isSPxColId(), MSG_INFO1, SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::rep(), SPxSolver::ROW, SoPlex::rowVectorRealInternal(), SPxBasis::solve(), soplex::spx_alloc(), soplex::spx_free(), soplex::spxLdexp(), SoPlex::spxout, and SPxException::what().

Referenced by SoPlex::solve().

◆ getBoundViolationRational()

bool getBoundViolationRational	(	Rational &	maxviol,
		Rational &	sumviol
	)

gets violation of bounds; returns true on success

Definition at line 3353 of file soplex.cpp.

References SolBase< R >::_primal, SoPlex::_solRational, SoPlex::_syncLPRational(), SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SoPlex::hasPrimal(), SoPlex::intParam(), SoPlex::lowerRational(), MSG_DEBUG, SoPlex::numColsRational(), soplex::rationalToString(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_ONLYREAL, and SoPlex::upperRational().

Referenced by checkSolutionRational(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getBoundViolationReal()

bool getBoundViolationReal	(	Real &	maxviol,
		Real &	sumviol
	)

gets violation of bounds; returns true on success

Definition at line 3038 of file soplex.cpp.

References SolBase< R >::_primal, SoPlex::_realLP, SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SoPlex::hasPrimal(), SPxLPBase< R >::lowerUnscaled(), SoPlex::numColsReal(), and SPxLPBase< R >::upperUnscaled().

Referenced by SoPlex::_verifySolutionReal(), checkSolutionReal(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getColRational()

void getColRational	(	int	i,
		LPColRational &	lpcol
	)		const

gets column i

Definition at line 1193 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::getCol().

◆ getColsRational()

void getColsRational	(	int	start,
		int	end,
		LPColSetRational &	lpcolset
	)		const

gets columns start, ..., end

Definition at line 1202 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::getCols().

◆ getColVectorReal()

void getColVectorReal	(	int	i,
		DSVectorReal &	col
	)		const

gets vector of col i

Definition at line 941 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::getColVectorUnscaled().

◆ getCompSlackVarCoeff()

Real getCompSlackVarCoeff ( int primalRowNum )

private

gets the coefficient of the slack variable in the primal complementary problem

Definition at line 3555 of file solvedbds.cpp.

References SoPlex::_compSolver, SoPlex::_decompDualColIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_realLP, SPxLPBase< R >::number(), SPxLPBase< R >::obj(), SPxLPBase< R >::rowType(), and SLACKCOEFF.

Referenced by SoPlex::_findViolatedRows().

◆ getDecompBoundViolation()

bool getDecompBoundViolation	(	Real &	maxviol,
		Real &	sumviol
	)

private

gets violation of bounds; returns true on success

Definition at line 3602 of file solvedbds.cpp.

References SoPlex::_decompViolatedBounds, SoPlex::_nDecompViolBounds, SolBase< R >::_primal, SoPlex::_realLP, SoPlex::_solReal, VectorBase< R >::dim(), SoPlex::FEASTOL, soplex::GT(), SPxLPBase< R >::lower(), SPxLPBase< R >::nCols(), SoPlex::realParam(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_checkOriginalProblemOptimality(), and SoPlex::_solveDecompositionDualSimplex().

◆ getDecompRowViolation()

bool getDecompRowViolation	(	Real &	maxviol,
		Real &	sumviol
	)

private

gets violation of constraints; returns true on success

Definition at line 3680 of file solvedbds.cpp.

References SoPlex::_decompViolatedRows, SoPlex::_nDecompViolRows, SolBase< R >::_primal, SoPlex::_realLP, SoPlex::_solReal, SPxLPBase< R >::computePrimalActivity(), VectorBase< R >::dim(), SoPlex::FEASTOL, soplex::GT(), SPxLPBase< R >::lhs(), SPxLPBase< R >::nCols(), SPxLPBase< R >::nRows(), SoPlex::realParam(), and SPxLPBase< R >::rhs().

Referenced by SoPlex::_checkOriginalProblemOptimality(), and SoPlex::_solveDecompositionDualSimplex().

◆ getDualFarkasRational()

bool getDualFarkasRational ( VectorRational & vector )

gets the Farkas proof if LP is infeasible; returns true on success

Definition at line 3338 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SolBase< R >::getDualFarkas(), SoPlex::hasDualFarkas(), and SoPlex::numRowsRational().

Referenced by SoPlex::getDualViolationRational(), and SoPlex::solve().

◆ getDualFarkasReal()

bool getDualFarkasReal ( VectorReal & vector )

gets the Farkas proof if available; returns true on success

Definition at line 3023 of file soplex.cpp.

References SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SolBase< R >::getDualFarkas(), SoPlex::hasDualFarkas(), and SoPlex::numRowsReal().

Referenced by main(), and SoPlex::solve().

◆ getDualNorms()

bool getDualNorms	(	int &	nnormsRow,
		int &	nnormsCol,
		Real *	norms
	)		const

gets steepest edge norms and returns false if they are not available

Definition at line 1051 of file soplex.cpp.

References SoPlex::_solver, and SPxSolver::getDualNorms().

◆ getDualRational()

bool getDualRational ( VectorRational & vector )

gets the dual solution vector if available; returns true on success

Definition at line 3308 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SolBase< R >::getDual(), SoPlex::hasDual(), and SoPlex::numRowsRational().

Referenced by SoPlex::getDualViolationRational(), main(), and SoPlex::solve().

◆ getDualReal()

bool getDualReal ( VectorReal & vector )

gets the dual solution vector if available; returns true on success

Definition at line 2993 of file soplex.cpp.

References SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SolBase< R >::getDual(), SoPlex::hasDual(), and SoPlex::numRowsReal().

Referenced by main(), and SoPlex::solve().

◆ getDualViolationRational()

bool getDualViolationRational	(	Rational &	maxviol,
		Rational &	sumviol
	)

gets violation of dual multipliers; returns true on success

Definition at line 3538 of file soplex.cpp.

Referenced by checkSolutionRational(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getDualViolationReal()

bool getDualViolationReal	(	Real &	maxviol,
		Real &	sumviol
	)

gets violation of dual multipliers; returns true on success

Definition at line 3173 of file soplex.cpp.

References SolBase< R >::_dual, SoPlex::_solReal, SoPlex::_syncRealSolution(), SoPlex::basisRowStatus(), VectorBase< R >::dim(), SPxSolver::FIXED, SoPlex::hasBasis(), SoPlex::hasDual(), SoPlex::intParam(), SoPlex::numRowsReal(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MINIMIZE, SPxSolver::ON_LOWER, and SPxSolver::ON_UPPER.

Referenced by SoPlex::_verifySolutionReal(), checkSolutionReal(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getEstimatedCondition()

bool getEstimatedCondition ( Real & condition )

computes an estimated condition number for the current basis matrix using the power method; returns true on success

Definition at line 4037 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_solver, SPxSolver::basis(), SPxBasis::getEstimatedCondition(), SPxBasis::NO_PROBLEM, and SPxBasis::status().

Referenced by SoPlex::solve().

◆ getExactCondition()

bool getExactCondition ( Real & condition )

computes the exact condition number for the current basis matrix using the power method; returns true on success

Definition at line 4052 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_solver, SPxSolver::basis(), SPxBasis::getExactCondition(), SPxBasis::NO_PROBLEM, and SPxBasis::status().

Referenced by SoPlex::solve().

◆ getExpectedDualVariableSign()

SoPlex::DualSign getExpectedDualVariableSign ( int rowNumber )

private

returns the expected sign of the dual variables for the reduced problem

Definition at line 3383 of file solvedbds.cpp.

References SoPlex::_solver, SPxSolver::basis(), SPxBasis::desc(), SoPlex::IS_FREE, SoPlex::IS_NEG, SoPlex::IS_POS, SPxSolver::isRowBasic(), SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, and SPxBasis::Desc::rowStatus().

Referenced by SoPlex::_updateDecompReducedProblem().

◆ getLhsReal()

void getLhsReal ( DVectorReal & lhs ) const

gets left-hand side vector

Definition at line 905 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::getLhsUnscaled().

◆ getLowerReal()

void getLowerReal ( DVectorReal & lower ) const

gets lower bound vector

Definition at line 995 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::getLowerUnscaled().

◆ getNdualNorms()

void getNdualNorms	(	int &	nnormsRow,
		int &	nnormsCol
	)		const

gets number of available dual norms

Definition at line 1043 of file soplex.cpp.

References SoPlex::_solver, and SPxSolver::getNdualNorms().

◆ getObjRational() [1/2]

void getObjRational ( VectorRational & obj ) const

gets objective function vector

Definition at line 1256 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::getObj().

◆ getObjRational() [2/2]

void getObjRational	(	int	i,
		Rational &	obj
	)		const

gets objective value of column i

Definition at line 1265 of file soplex.cpp.

References SoPlex::intParam(), SoPlex::maxObjRational(), SoPlex::OBJSENSE, and SoPlex::OBJSENSE_MINIMIZE.

◆ getObjReal()

void getObjReal ( VectorReal & obj ) const

gets objective function vector

Definition at line 1005 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::getObjUnscaled().

◆ getOriginalProblemBasisColStatus()

void getOriginalProblemBasisColStatus ( int & nNonBasicCols )

private

function to retrieve the column status for the original problem basis from the reduced and complementary problems

Definition at line 3973 of file solvedbds.cpp.

References SoPlex::_basisStatusCols, SoPlex::_decompReducedProbColRowIDs, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SPxBasis::desc(), soplex::EQ(), SoPlex::FEASTOL, SPxSolver::FIXED, SPxSolver::fVec(), MSG_INFO2, SPxLPBase< R >::nCols(), SPxLPBase< R >::number(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_FREE, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SoPlex::realParam(), SPxBasis::Desc::rowStatus(), SoPlex::spxout, and SPxSolver::ZERO.

Referenced by SoPlex::_writeOriginalProblemBasis().

◆ getOriginalProblemBasisRowStatus()

void getOriginalProblemBasisRowStatus	(	DataArray< int > &	degenerateRowNums,
		DataArray< SPxSolver::VarStatus > &	degenerateRowStatus,
		int &	nDegenerateRows,
		int &	nNonBasicRows
	)

private

function to retrieve the original problem row basis status from the reduced and complementary problems

Definition at line 3783 of file solvedbds.cpp.

References SoPlex::_basisStatusRows, SoPlex::_decompElimPrimalRowIDs, SoPlex::_decompPrimalRowIDs, SoPlex::_decompReducedProbRowIDs, SoPlex::_decompReducedProbRows, SoPlex::_nElimPrimalRows, SoPlex::_nPrimalRows, SoPlex::_realLP, SoPlex::_solver, SPxSolver::BASIC, SPxSolver::basis(), SPxBasis::Desc::D_ON_LOWER, SPxBasis::Desc::D_ON_UPPER, SPxBasis::desc(), soplex::EQ(), SoPlex::FEASTOL, SPxSolver::FIXED, SPxLPBase< R >::lhs(), MSG_INFO2, SPxLPBase< R >::nRows(), SPxLPBase< R >::number(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_FREE, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SPxSolver::pVec(), SoPlex::realParam(), SPxLPBase< R >::rhs(), SPxBasis::Desc::rowStatus(), SPxLPBase< R >::rowType(), SoPlex::spxout, and SPxSolver::ZERO.

Referenced by SoPlex::_writeOriginalProblemBasis().

◆ getOriginalProblemStatistics()

void getOriginalProblemStatistics ( )

private

stores the problem statistics of the original problem

Definition at line 3464 of file solvedbds.cpp.

References SoPlex::_realLP, soplex::infinity, SPxLPBase< R >::lhs(), SPxLPBase< R >::lower(), SoPlex::maxAbsNonzero, SPxLPBase< R >::maxAbsNzo(), SoPlex::minAbsNonzero, SPxLPBase< R >::minAbsNzo(), SPxLPBase< R >::nCols(), SPxLPBase< R >::nNzos(), SPxLPBase< R >::nRows(), SoPlex::numNonzeros, SoPlex::numProbCols, SoPlex::numProbRows, SoPlex::origCountBoxed, SoPlex::origCountFreeCol, SoPlex::origCountFreeRow, SoPlex::origCountLhs, SoPlex::origCountLower, SoPlex::origCountRanged, SoPlex::origCountRhs, SoPlex::origCountUpper, SPxLPBase< R >::rhs(), and SPxLPBase< R >::upper().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ getOrigProbDualVariableSign()

SoPlex::DualSign getOrigProbDualVariableSign ( int rowNumber )

private

returns the expected sign of the dual variables for the original problem

Definition at line 3402 of file solvedbds.cpp.

References SoPlex::_realLP, SoPlex::IS_FREE, SoPlex::IS_NEG, SoPlex::IS_POS, and SPxLPBase< R >::rowType().

Referenced by SoPlex::_updateDecompReducedProblem().

◆ getOrigVarFixedDirection()

int getOrigVarFixedDirection ( int colNum )

private

determining which bound the primal variables will be fixed to.

Definition at line 3196 of file solvedbds.cpp.

References SoPlex::_decompReducedProbColRowIDs, SoPlex::_solver, SPxSolver::basis(), SPxBasis::Desc::D_FREE, SPxBasis::desc(), soplex::infinity, SPxLPBase< R >::lhs(), SPxLPBase< R >::number(), SPxBasis::Desc::P_FIXED, SPxBasis::Desc::P_ON_LOWER, SPxBasis::Desc::P_ON_UPPER, SPxLPBase< R >::rhs(), and SPxBasis::Desc::rowStatus().

Referenced by SoPlex::_identifyComplementaryDualFixedPrimalVars(), and SoPlex::_identifyComplementaryPrimalFixedPrimalVars().

◆ getPricerName()

const char * getPricerName ( )

name of currently loaded pricer

Definition at line 5064 of file soplex.cpp.

References SoPlex::_solver, SPxPricer::getName(), and SPxSolver::pricer().

Referenced by SoPlex::solve().

◆ getPrimalRational()

bool getPrimalRational ( VectorRational & vector )

gets the primal solution vector if available; returns true on success

Definition at line 3263 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SolBase< R >::getPrimal(), SoPlex::hasPrimal(), and SoPlex::numColsRational().

Referenced by SoPlex::getDualViolationRational(), main(), and SoPlex::solve().

◆ getPrimalRayRational()

bool getPrimalRayRational ( VectorRational & vector )

gets the primal ray if LP is unbounded; returns true on success

Definition at line 3293 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SolBase< R >::getPrimalRay(), SoPlex::hasPrimalRay(), and SoPlex::numColsRational().

Referenced by SoPlex::getDualViolationRational(), and SoPlex::solve().

◆ getPrimalRayReal()

bool getPrimalRayReal ( VectorReal & vector )

gets the primal ray if available; returns true on success

Definition at line 2978 of file soplex.cpp.

References SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SolBase< R >::getPrimalRay(), SoPlex::hasPrimalRay(), and SoPlex::numColsReal().

Referenced by main(), and SoPlex::solve().

◆ getPrimalReal()

bool getPrimalReal ( VectorReal & vector )

gets the primal solution vector if available; returns true on success

Definition at line 2948 of file soplex.cpp.

References SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SolBase< R >::getPrimal(), SoPlex::hasPrimal(), and SoPlex::numColsReal().

Referenced by main(), and SoPlex::solve().

◆ getRatiotesterName()

const char * getRatiotesterName ( )

name of currently loaded ratiotester

Definition at line 5072 of file soplex.cpp.

References SoPlex::_solver, SPxRatioTester::getName(), and SPxSolver::ratiotester().

Referenced by SoPlex::solve().

◆ getRedCostRational()

bool getRedCostRational ( VectorRational & vector )

gets the vector of reduced cost values if available; returns true on success

Definition at line 3323 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SolBase< R >::getRedCost(), SoPlex::hasDual(), and SoPlex::numColsRational().

Referenced by SoPlex::getDualViolationRational(), and SoPlex::solve().

◆ getRedCostReal()

bool getRedCostReal ( VectorReal & vector )

gets the vector of reduced cost values if available; returns true on success

Definition at line 3008 of file soplex.cpp.

References SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SolBase< R >::getRedCost(), SoPlex::hasDual(), and SoPlex::numColsReal().

Referenced by SoPlex::solve().

◆ getRedCostViolationRational()

bool getRedCostViolationRational	(	Rational &	maxviol,
		Rational &	sumviol
	)

gets violation of reduced costs; returns true on success

Definition at line 3457 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_hasBasis, SolBase< R >::_primal, SolBase< R >::_redCost, SoPlex::_solRational, SoPlex::_syncLPRational(), SoPlex::_syncRationalSolution(), SoPlex::basisColStatus(), VectorBase< R >::dim(), SPxSolver::FIXED, SoPlex::hasDual(), SoPlex::hasPrimal(), SoPlex::intParam(), SoPlex::lowerRational(), MSG_DEBUG, SoPlex::numColsRational(), SoPlex::numColsReal(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MINIMIZE, SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::RANGETYPE_FIXED, soplex::rationalToString(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_ONLYREAL, SPxSolver::UNDEFINED, and SoPlex::upperRational().

Referenced by checkSolutionRational(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getRedCostViolationReal()

bool getRedCostViolationReal	(	Real &	maxviol,
		Real &	sumviol
	)

gets violation of reduced costs; returns true on success

Definition at line 3119 of file soplex.cpp.

References SolBase< R >::_redCost, SoPlex::_solReal, SoPlex::_syncRealSolution(), SoPlex::basisColStatus(), VectorBase< R >::dim(), SPxSolver::FIXED, SoPlex::hasBasis(), SoPlex::hasDual(), SoPlex::intParam(), SoPlex::numColsReal(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MINIMIZE, SPxSolver::ON_LOWER, and SPxSolver::ON_UPPER.

Referenced by SoPlex::_verifySolutionReal(), checkSolutionReal(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getRhsReal()

void getRhsReal ( DVectorReal & rhs ) const

gets right-hand side vector

Definition at line 878 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::getRhsUnscaled().

◆ getRowRational()

void getRowRational	(	int	i,
		LPRowRational &	lprow
	)		const

gets row i

Definition at line 1121 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::getRow().

◆ getRowsRational()

void getRowsRational	(	int	start,
		int	end,
		LPRowSetRational &	lprowset
	)		const

gets rows start, ..., end.

Definition at line 1130 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::getRows().

◆ getRowVectorReal()

void getRowVectorReal	(	int	i,
		DSVectorReal &	row
	)		const

gets vector of row i

Definition at line 852 of file soplex.cpp.

References SoPlex::_realLP, SoPlex::_scaler, SPxScaler::getRowUnscaled(), SPxLPBase< R >::isScaled(), SPxLPBase< R >::rowVector(), and DSVectorBase< R >::setMax().

◆ getRowViolationRational()

bool getRowViolationRational	(	Rational &	maxviol,
		Rational &	sumviol
	)

gets violation of constraints; returns true on success

Definition at line 3404 of file soplex.cpp.

References SolBase< R >::_primal, SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncLPRational(), SoPlex::_syncRationalSolution(), SPxLPBase< R >::computePrimalActivity(), VectorBase< R >::dim(), SoPlex::hasPrimal(), SoPlex::intParam(), SoPlex::lhsRational(), MSG_DEBUG, SoPlex::numColsRational(), SoPlex::numRowsRational(), soplex::rationalToString(), SoPlex::rhsRational(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by checkSolutionRational(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getRowViolationReal()

bool getRowViolationReal	(	Real &	maxviol,
		Real &	sumviol
	)

gets violation of constraints; returns true on success

Definition at line 3077 of file soplex.cpp.

References SolBase< R >::_primal, SoPlex::_realLP, SoPlex::_solReal, SoPlex::_syncRealSolution(), SPxLPBase< R >::computePrimalActivity(), VectorBase< R >::dim(), SoPlex::hasPrimal(), SPxLPBase< R >::lhsUnscaled(), SoPlex::numColsReal(), SoPlex::numRowsReal(), and SPxLPBase< R >::rhsUnscaled().

Referenced by SoPlex::_verifySolutionReal(), checkSolutionReal(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ getScalerName()

const char * getScalerName ( )

name of scaling method

name of scaling method after simplifier

Definition at line 5053 of file soplex.cpp.

References SoPlex::_scaler, and SPxScaler::getName().

Referenced by SoPlex::solve().

◆ getSimplifierName()

const char * getSimplifierName ( )

name of simplifier

Definition at line 5042 of file soplex.cpp.

References SoPlex::_simplifier, and SPxSimplifier::getName().

Referenced by SoPlex::solve().

◆ getSlacksRational()

bool getSlacksRational ( VectorRational & vector )

gets the vector of slack values if available; returns true on success

Definition at line 3278 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_solRational, SoPlex::_syncRationalSolution(), VectorBase< R >::dim(), SolBase< R >::getSlacks(), SoPlex::hasPrimal(), and SoPlex::numRowsRational().

Referenced by SoPlex::getDualViolationRational(), and SoPlex::solve().

◆ getSlacksReal()

bool getSlacksReal ( VectorReal & vector )

gets the vector of slack values if available; returns true on success

Definition at line 2963 of file soplex.cpp.

References SoPlex::_solReal, SoPlex::_syncRealSolution(), VectorBase< R >::dim(), SolBase< R >::getSlacks(), SoPlex::hasPrimal(), and SoPlex::numRowsReal().

Referenced by SoPlex::solve().

◆ getStarterName()

const char * getStarterName ( )

name of starter

Definition at line 5031 of file soplex.cpp.

References SoPlex::_starter, and SPxStarter::getName().

Referenced by SoPlex::solve().

◆ getUpperReal()

void getUpperReal ( DVectorReal & upper ) const

gets upper bound vector

Definition at line 968 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::getUpperUnscaled().

◆ hasBasis()

bool hasBasis ( ) const

is an advanced starting basis available?

Definition at line 3828 of file soplex.cpp.

References SoPlex::_hasBasis.

Referenced by SoPlex::basisColStatus(), SoPlex::basisRowStatus(), SoPlex::basisStatus(), SoPlex::computeBasisInverseRational(), SoPlex::getBasis(), SoPlex::getBasisInd(), SoPlex::getBasisInverseColReal(), SoPlex::getBasisInverseRowReal(), SoPlex::getBasisInverseTimesVecReal(), SoPlex::getDualViolationReal(), SoPlex::getRedCostViolationReal(), main(), SoPlex::multBasis(), SoPlex::multBasisTranspose(), and SoPlex::solve().

◆ hasDual()

bool hasDual ( ) const

is a dual feasible solution available?

Definition at line 2906 of file soplex.cpp.

References SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_solRational, SoPlex::_solReal, and SolBase< R >::isDualFeasible().

Referenced by SoPlex::basisStatus(), checkSolutionRational(), checkSolutionReal(), SoPlex::dlcmSizeDualRational(), SoPlex::dmaxSizeDualRational(), SoPlex::getDualRational(), SoPlex::getDualReal(), SoPlex::getDualViolationRational(), SoPlex::getDualViolationReal(), SoPlex::getRedCostRational(), SoPlex::getRedCostReal(), SoPlex::getRedCostViolationRational(), SoPlex::getRedCostViolationReal(), SoPlex::objValueRational(), SoPlex::objValueReal(), SoPlex::solve(), and SoPlex::totalSizeDualRational().

◆ hasDualFarkas()

bool hasDualFarkas ( ) const

is Farkas proof of infeasibility available?

Definition at line 2914 of file soplex.cpp.

References SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_solRational, SoPlex::_solReal, and SolBase< R >::hasDualFarkas().

Referenced by SoPlex::dlcmSizeDualRational(), SoPlex::dmaxSizeDualRational(), SoPlex::getDualFarkasRational(), SoPlex::getDualFarkasReal(), SoPlex::getDualViolationRational(), SoPlex::solve(), and SoPlex::totalSizeDualRational().

◆ hasPrimal()

bool hasPrimal ( ) const

◆ hasPrimalRay()

bool hasPrimalRay ( ) const

is a primal unbounded ray available?

Definition at line 2898 of file soplex.cpp.

References SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_solRational, SoPlex::_solReal, and SolBase< R >::hasPrimalRay().

Referenced by SoPlex::dlcmSizePrimalRational(), SoPlex::dmaxSizePrimalRational(), SoPlex::getDualViolationRational(), SoPlex::getPrimalRayRational(), SoPlex::getPrimalRayReal(), SoPlex::solve(), and SoPlex::totalSizePrimalRational().

◆ intParam()

int intParam ( const IntParam param ) const

returns integer parameter value

Definition at line 5500 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::Settings::_intParamValues, and SoPlex::INTPARAM_COUNT.

◆ lhsRational() [1/2]

const VectorRational & lhsRational ( ) const

◆ lhsRational() [2/2]

const Rational & lhsRational ( int i ) const

returns left-hand side of row i

Definition at line 1175 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::lhs().

◆ lhsReal()

Real lhsReal ( int i ) const

returns left-hand side of row i

Definition at line 914 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::lhsUnscaled().

Referenced by SoPlex::_changeRhsReal(), SoPlex::_untransformFeasibility(), and SoPlex::_untransformUnbounded().

◆ lhsRealInternal()

const VectorReal & lhsRealInternal ( ) const

returns left-hand side vector, ignoring scaling

Definition at line 896 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::lhs().

◆ loadSettingsFile()

bool loadSettingsFile ( const char * filename )

reads settings file; returns true on success

Definition at line 6295 of file soplex.cpp.

References SoPlex::_parseSettingsLine(), SoPlex::_statistics, MSG_INFO1, SoPlex::Statistics::readingTime, SET_MAX_LINE_LEN, SoPlex::spxout, Timer::start(), and Timer::stop().

Referenced by main().

◆ lowerRational() [1/2]

const VectorRational & lowerRational ( ) const

◆ lowerRational() [2/2]

const Rational & lowerRational ( int i ) const

returns lower bound of column i

Definition at line 1247 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::lower().

◆ lowerReal()

Real lowerReal ( int i ) const

returns lower bound of column i

Definition at line 986 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::lowerUnscaled().

Referenced by SoPlex::_changeUpperReal(), SoPlex::_transformFeasibility(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::basisColStatus(), and SoPlex::getBasis().

◆ lowerRealInternal()

const VectorReal & lowerRealInternal ( ) const

returns lower bound vector

Definition at line 977 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::lower().

Referenced by SoPlex::readBasisFile().

◆ maxAbsNonzeroRational()

Rational maxAbsNonzeroRational ( ) const

returns biggest non-zero element in absolute value

Definition at line 1112 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::maxAbsNzo().

◆ maxAbsNonzeroReal()

Real maxAbsNonzeroReal ( ) const

returns biggest non-zero element in absolute value

Definition at line 820 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::maxAbsNzo().

◆ maxObjRational() [1/2]

const VectorRational & maxObjRational ( ) const

returns objective function vector after transformation to a maximization problem; since this is how it is stored internally, this is generally faster

Definition at line 1285 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::maxObj().

Referenced by SoPlex::addColRational(), and SoPlex::getObjRational().

◆ maxObjRational() [2/2]

const Rational & maxObjRational ( int i ) const

returns objective value of column i after transformation to a maximization problem; since this is how it is stored internally, this is generally faster

Definition at line 1295 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::maxObj().

◆ maxObjReal()

Real maxObjReal ( int i ) const

returns objective value of column i after transformation to a maximization problem; since this is how it is stored internally, this is generally faster

Definition at line 1034 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::maxObjUnscaled().

◆ maxObjRealInternal()

const VectorReal & maxObjRealInternal ( ) const

returns objective function vector after transformation to a maximization problem; since this is how it is stored internally, this is generally faster

Definition at line 1024 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::maxObj().

◆ minAbsNonzeroRational()

Rational minAbsNonzeroRational ( ) const

returns smallest non-zero element in absolute value

Definition at line 1103 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::minAbsNzo().

◆ minAbsNonzeroReal()

Real minAbsNonzeroReal ( ) const

returns smallest non-zero element in absolute value

Definition at line 811 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::minAbsNzo().

◆ multBasis()

bool multBasis	(	Real *	vec,
		bool	unscale = `true`
	)

multiply with basis matrix; B * vec (inplace)

multiply with basis matrix; B * vec (inplace)

Parameters

unscale determines whether the result should be unscaled according to the original LP data

Definition at line 4623 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_scaler, SoPlex::_solver, DSVectorBase< R >::add(), SPxBasis::baseId(), SPxSolver::basis(), SVectorBase< R >::clear(), SPxSolver::COLUMN, SPxLPBase< R >::colVector(), SoPlex::getBasisInd(), SPxScaler::getColScaleExp(), SPxLPBase< R >::getColVectorUnscaled(), SPxScaler::getRowScaleExp(), SoPlex::hasBasis(), SPxSolver::isColBasic(), soplex::isNotZero(), SPxSolver::isRowBasic(), SPxLPBase< R >::isScaled(), SPxId::isSPxColId(), SPxBasis::multBaseWith(), SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::rep(), soplex::spx_alloc(), soplex::spx_free(), and soplex::spxLdexp().

Referenced by SoPlex::_checkBasisScaling(), and SoPlex::solve().

◆ multBasisTranspose()

bool multBasisTranspose	(	Real *	vec,
		bool	unscale = `true`
	)

multiply with transpose of basis matrix; vec * B^T (inplace)

multiply with transpose of basis matrix; vec * B^T (inplace)

Parameters

unscale determines whether the result should be unscaled according to the original LP data

Definition at line 4733 of file soplex.cpp.

References SoPlex::_ensureRealLPLoaded(), SoPlex::_isRealLPLoaded, SoPlex::_scaler, SoPlex::_solver, DSVectorBase< R >::add(), SPxBasis::baseId(), SPxSolver::basis(), SPxSolver::COLUMN, SPxLPBase< R >::colVector(), SoPlex::getBasisInd(), SPxScaler::getColScaleExp(), SPxLPBase< R >::getColVectorUnscaled(), SPxScaler::getRowScaleExp(), SoPlex::hasBasis(), SPxSolver::isColBasic(), soplex::isNotZero(), SPxSolver::isRowBasic(), SPxLPBase< R >::isScaled(), SPxId::isSPxColId(), SPxBasis::multWithBase(), SPxLPBase< R >::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::rep(), soplex::spx_alloc(), soplex::spx_free(), and soplex::spxLdexp().

Referenced by SoPlex::_checkBasisScaling(), and SoPlex::solve().

◆ numColsRational()

int numColsRational ( ) const

returns number of columns

Definition at line 1085 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::nCols().

◆ numColsReal()

int numColsReal ( ) const

returns number of columns

Definition at line 793 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::nCols().

Referenced by SoPlex::_changeBoundsReal(), SoPlex::_changeLowerReal(), SoPlex::_changeUpperReal(), SoPlex::_computeReducedProbObjCoeff(), SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_deleteAndUpdateRowsComplementaryProblem(), SoPlex::_ensureRealLPLoaded(), SoPlex::_formDecompReducedProblem(), SoPlex::_getCompatibleBoundCons(), SoPlex::_getCompatibleColumns(), SoPlex::_getZeroDualMultiplierIndices(), SoPlex::_isConsistent(), SoPlex::_lift(), SoPlex::_optimizeRational(), SoPlex::_preprocessAndSolveReal(), SoPlex::_project(), SoPlex::_recomputeRangeTypesReal(), SoPlex::_removeColsReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_updateDecompReducedProblemViol(), SoPlex::basisColStatus(), SoPlex::getBasis(), SoPlex::getBasisInd(), SoPlex::getBasisInverseColReal(), SoPlex::getBasisInverseRowReal(), SoPlex::getBasisInverseTimesVecReal(), SoPlex::getBoundViolationReal(), SoPlex::getPrimalRayReal(), SoPlex::getPrimalReal(), SoPlex::getRedCostReal(), SoPlex::getRedCostViolationRational(), SoPlex::getRedCostViolationReal(), SoPlex::getRowViolationReal(), main(), SoPlex::multBasis(), SoPlex::multBasisTranspose(), SoPlex::readBasisFile(), SoPlex::removeColRangeReal(), SoPlex::removeColsReal(), and SoPlex::setBasis().

◆ numIterations()

int numIterations ( ) const

number of iterations since last call to solve

Definition at line 4999 of file soplex.cpp.

References SoPlex::_statistics, and SoPlex::Statistics::iterations.

Referenced by SoPlex::solve(), and SoPlex::statisticString().

◆ numNonzerosRational()

int numNonzerosRational ( ) const

returns number of nonzeros

Definition at line 1094 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::nNzos().

◆ numNonzerosReal()

int numNonzerosReal ( ) const

returns number of nonzeros

Definition at line 802 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::nNzos().

Referenced by main().

◆ numRowsRational()

int numRowsRational ( ) const

returns number of rows

Definition at line 1076 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::nRows().

◆ numRowsReal()

int numRowsReal ( ) const

returns number of rows

Definition at line 784 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::nRows().

Referenced by SoPlex::_changeLhsReal(), SoPlex::_changeRangeReal(), SoPlex::_changeRhsReal(), SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_deleteAndUpdateRowsComplementaryProblem(), SoPlex::_ensureRealLPLoaded(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_formDecompReducedProblem(), SoPlex::_getCompatibleColumns(), SoPlex::_isConsistent(), SoPlex::_optimizeRational(), SoPlex::_preprocessAndSolveReal(), SoPlex::_project(), SoPlex::_recomputeRangeTypesReal(), SoPlex::_removeRowsReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_updateDecompReducedProblemViol(), SoPlex::basisRowStatus(), SoPlex::getBasis(), SoPlex::getBasisInd(), SoPlex::getBasisInverseColReal(), SoPlex::getBasisInverseRowReal(), SoPlex::getBasisInverseTimesVecReal(), SoPlex::getDualFarkasReal(), SoPlex::getDualReal(), SoPlex::getDualViolationRational(), SoPlex::getDualViolationReal(), SoPlex::getRowViolationReal(), SoPlex::getSlacksReal(), main(), SoPlex::multBasis(), SoPlex::multBasisTranspose(), SoPlex::readBasisFile(), SoPlex::removeRowRangeReal(), SoPlex::removeRowsReal(), and SoPlex::setBasis().

◆ objRational()

Rational objRational ( int i ) const

returns objective value of column i

Definition at line 1275 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::obj().

Referenced by SoPlex::_factorizeColumnRational(), and SoPlex::changeObjRational().

◆ objReal()

Real objReal ( int i ) const

returns objective value of column i

Definition at line 1014 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::objUnscaled().

Referenced by SoPlex::_storeSolutionRealFromPresol().

◆ objValueRational()

Rational objValueRational ( )

returns the objective value if a primal solution is available

returns the objective value if a primal or dual solution is available

Definition at line 3227 of file soplex.cpp.

References SolBase< R >::_dualObjVal, SolBase< R >::_primalObjVal, SoPlex::_rationalNegInfty, SoPlex::_rationalPosInfty, SoPlex::_rationalZero, SoPlex::_solRational, SoPlex::_syncRationalSolution(), SoPlex::hasDual(), SoPlex::hasPrimal(), SPxSolver::INFEASIBLE, SoPlex::intParam(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, SoPlex::status(), and SPxSolver::UNBOUNDED.

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ objValueReal()

Real objValueReal ( )

returns the objective value if a primal solution is available

returns the objective value if a primal or dual solution is available

Definition at line 2922 of file soplex.cpp.

References SolBase< R >::_dualObjVal, SolBase< R >::_primalObjVal, SoPlex::_solReal, SoPlex::_syncRealSolution(), SoPlex::hasDual(), SoPlex::hasPrimal(), SPxSolver::INFEASIBLE, SoPlex::INFTY, SoPlex::intParam(), SoPlex::OBJ_OFFSET, SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, SoPlex::realParam(), SoPlex::status(), and SPxSolver::UNBOUNDED.

Referenced by main(), SoPlex::printShortStatistics(), SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ operator=()

SoPlex & operator= ( const SoPlex & rhs )

assignment operator

Definition at line 610 of file soplex.cpp.

References SoPlex::_applyPolishing, SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_currentSettings, SoPlex::_hasBasis, SoPlex::_hasSolRational, SoPlex::_hasSolReal, SoPlex::_isConsistent(), SoPlex::_isRealLPLoaded, SoPlex::_isRealLPScaled, SoPlex::_lastSolveMode, SoPlex::_pricerAuto, SoPlex::_pricerDantzig, SoPlex::_pricerDevex, SoPlex::_pricerParMult, SoPlex::_pricerQuickSteep, SoPlex::_pricerSteep, SoPlex::_rationalLP, SoPlex::_rationalLUSolver, SoPlex::_rationalNegone, SoPlex::_rationalPosone, SoPlex::_rationalZero, SoPlex::_ratiotesterBoundFlipping, SoPlex::_ratiotesterFast, SoPlex::_ratiotesterHarris, SoPlex::_ratiotesterTextbook, SoPlex::_realLP, SoPlex::_scalerBiequi, SoPlex::_scalerGeo1, SoPlex::_scalerGeo8, SoPlex::_scalerLeastsq, SoPlex::_scalerUniequi, SoPlex::_simplifierMainSM, SoPlex::_slufactor, SoPlex::_solRational, SoPlex::_solReal, SoPlex::_solver, SoPlex::_starterSum, SoPlex::_starterVector, SoPlex::_starterWeight, SoPlex::_statistics, SoPlex::_status, SoPlex::intParam(), SLinSolverRational::OK, SoPlex::SCALER, SPxSolver::setBasisSolver(), SoPlex::setIntParam(), SPxScaler::setOutstream(), SPxSolver::setOutstream(), SoPlex::SIMPLIFIER, soplex::spx_alloc(), SoPlex::spxout, SoPlex::STARTER, SLUFactorRational::status(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_ONLYREAL.

◆ optimize()

SPxSolver::Status optimize ( )

optimize the given LP

solves the LP

Definition at line 2788 of file soplex.cpp.

References SoPlex::_checkBasisScaling(), SoPlex::_currentSettings, SoPlex::_invalidateSolution(), SoPlex::_isConsistent(), SoPlex::_optimizeRational(), SoPlex::_optimizeReal(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_solver, SoPlex::_statistics, SoPlex::_syncLPRational(), SoPlex::ALGORITHM, SoPlex::ALGORITHM_DUAL, SoPlex::areLPsInSync(), SoPlex::boolParam(), SoPlex::Statistics::clearSolvingData(), SoPlex::COMPUTEDEGEN, SoPlex::FEASTOL, SoPlex::FPFEASTOL, SoPlex::FPOPTTOL, soplex::GE(), SPxOut::getStream(), SPxOut::INFO1, SoPlex::intParam(), SoPlex::Settings::RealParam::lower, MSG_INFO1, MSG_WARNING, SoPlex::OPTTOL, SoPlex::printShortStatistics(), SoPlex::Settings::realParam, SoPlex::realParam(), SoPlex::REPRESENTATION, SoPlex::REPRESENTATION_ROW, SPxSolver::setComputeDegenFlag(), SPxSolver::setFeastol(), SoPlex::setIntParam(), SPxSolver::setOpttol(), SoPlex::SOLVEMODE, SoPlex::SOLVEMODE_AUTO, SoPlex::SOLVEMODE_REAL, SoPlex::spxout, SoPlex::status(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_MANUAL, SoPlex::SYNCMODE_ONLYREAL, and SoPlex::USEDECOMPDUALSIMPLEX.

Referenced by main(), and SoPlex::solve().

◆ parseSettingsString()

bool parseSettingsString ( char * line )

parses one setting string and returns true on success; note that string is modified

parses one setting string and returns true on success

Definition at line 6344 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::Settings::boolParam, SoPlex::BOOLPARAM_COUNT, SoPlex::Settings::intParam, SoPlex::INTPARAM_COUNT, MSG_INFO1, SoPlex::Settings::BoolParam::name, SoPlex::Settings::IntParam::name, SoPlex::Settings::RealParam::name, soplex::readStringRational(), REAL_FORMAT, SoPlex::Settings::realParam, SoPlex::REALPARAM_COUNT, SET_MAX_LINE_LEN, SoPlex::setBoolParam(), SoPlex::setIntParam(), SoPlex::setRandomSeed(), SoPlex::setRealParam(), and SoPlex::spxout.

Referenced by main().

◆ printDecompDisplayLine()

void printDecompDisplayLine	(	SPxSolver &	solver,
		const SPxOut::Verbosity	origVerb,
		bool	force,
		bool	forceHead
	)

private

prints a display line of the flying table for the DBDS

print display line of flying table

Definition at line 3422 of file solvedbds.cpp.

References SoPlex::_decompDisplayLine, SoPlex::_statistics, SoPlex::Statistics::callsReducedProb, SoPlex::DECOMP_DISPLAYFREQ, SPxOut::getVerbosity(), SoPlex::intParam(), SoPlex::Statistics::iterations, SoPlex::Statistics::iterationsRedProb, SPxSolver::LEAVE, MSG_INFO1, SPxLPBase< R >::nCols(), SoPlex::numIncludedRows, SPxLPBase< R >::objOffset(), SPxOut::setVerbosity(), SPxSolver::shift(), SoPlex::Statistics::solvingTime, SoPlex::spxout, Timer::time(), SPxSolver::type(), and SPxSolver::value().

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ printOriginalProblemStatistics()

void printOriginalProblemStatistics ( std::ostream & os )

private

stores the problem statistics of the original problem

Definition at line 3532 of file solvedbds.cpp.

References SoPlex::maxAbsNonzero, SoPlex::minAbsNonzero, SoPlex::numNonzeros, SoPlex::numProbCols, SoPlex::numProbRows, SoPlex::origCountBoxed, SoPlex::origCountFreeCol, SoPlex::origCountFreeRow, SoPlex::origCountLhs, SoPlex::origCountLower, SoPlex::origCountRanged, SoPlex::origCountRhs, and SoPlex::origCountUpper.

Referenced by SoPlex::printStatistics().

◆ printShortStatistics()

void printShortStatistics ( std::ostream & os )

prints short statistics

Definition at line 6688 of file soplex.cpp.

References SoPlex::_statistics, SoPlex::_status, SoPlex::Statistics::iterations, SoPlex::objValueReal(), SoPlex::printStatus(), SoPlex::Statistics::solvingTime, and Timer::time().

Referenced by SoPlex::optimize().

◆ printSolutionStatistics()

void printSolutionStatistics ( std::ostream & os )

prints solution statistics

Definition at line 6599 of file soplex.cpp.

References SoPlex::_lastSolveMode, SoPlex::CHECKMODE, SoPlex::CHECKMODE_AUTO, SoPlex::CHECKMODE_RATIONAL, SoPlex::dlcmSizeDualRational(), SoPlex::dlcmSizePrimalRational(), SoPlex::dmaxSizeDualRational(), SoPlex::dmaxSizePrimalRational(), SoPlex::getBoundViolationRational(), SoPlex::getBoundViolationReal(), SoPlex::getDualViolationRational(), SoPlex::getDualViolationReal(), SoPlex::getRedCostViolationRational(), SoPlex::getRedCostViolationReal(), SoPlex::getRowViolationRational(), SoPlex::getRowViolationReal(), SoPlex::intParam(), SoPlex::objValueRational(), SoPlex::objValueReal(), soplex::rationalToString(), SoPlex::READMODE, SoPlex::READMODE_RATIONAL, SoPlex::SOLVEMODE_RATIONAL, SoPlex::SOLVEMODE_REAL, SoPlex::totalSizeDualRational(), and SoPlex::totalSizePrimalRational().

Referenced by SoPlex::printStatistics().

◆ printSolvingStatistics()

void printSolvingStatistics ( std::ostream & os )

prints statistics on solving process

Definition at line 6679 of file soplex.cpp.

References SoPlex::_statistics, and SoPlex::Statistics::print().

Referenced by SoPlex::printStatistics().

◆ printStatistics()

void printStatistics ( std::ostream & os )

prints complete statistics

Definition at line 6699 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_status, SoPlex::boolParam(), SoPlex::intParam(), SoPlex::OBJSENSE, SoPlex::OBJSENSE_MINIMIZE, SoPlex::printOriginalProblemStatistics(), SPxLPBase< R >::printProblemStatistics(), SoPlex::printSolutionStatistics(), SoPlex::printSolvingStatistics(), SoPlex::printStatus(), SoPlex::READMODE, SoPlex::READMODE_REAL, and SoPlex::USEDECOMPDUALSIMPLEX.

Referenced by main().

◆ printStatus()

void printStatus	(	std::ostream &	os,
		SPxSolver::Status	status
	)

prints status

Definition at line 6726 of file soplex.cpp.

References SPxSolver::ABORT_CYCLING, SPxSolver::ABORT_ITER, SPxSolver::ABORT_TIME, SPxSolver::ABORT_VALUE, SPxSolver::ERROR, SPxSolver::INFEASIBLE, SPxSolver::INForUNBD, SPxSolver::NO_PRICER, SPxSolver::NO_PROBLEM, SPxSolver::NO_RATIOTESTER, SPxSolver::NO_SOLVER, SPxSolver::NOT_INIT, SPxSolver::OPTIMAL, SPxSolver::REGULAR, SPxSolver::SINGULAR, SPxSolver::UNBOUNDED, and SPxSolver::UNKNOWN.

Referenced by SoPlex::printShortStatistics(), and SoPlex::printStatistics().

◆ printUserSettings()

void printUserSettings ( )

◆ printVersion()

void printVersion ( ) const

prints version and compilation options

Definition at line 6792 of file soplex.cpp.

References soplex::getGitHash(), MSG_INFO1, SOPLEX_SUBVERSION, SOPLEX_VERSION, and SoPlex::spxout.

Referenced by main().

◆ randomSeed()

unsigned int randomSeed ( ) const

returns the current random seed of the solver instance

returns the current random seed of the solver instance or the one stored in the settings

Definition at line 7099 of file soplex.cpp.

References SoPlex::_solver, Random::getSeed(), and SPxSolver::random.

◆ readBasisFile()

bool readBasisFile	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`
	)

reads basis information from filename and returns true on success; if rowNames and colNames are NULL, default names are assumed; returns true on success

Definition at line 5158 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_realLP, SoPlex::_rowTypes, SoPlex::_solver, SoPlex::_statistics, NameSet::add(), SPxSolver::BASIC, SPxSolver::basis(), SoPlex::clearBasis(), MPSInput::ENDATA, MPSInput::field0(), MPSInput::field1(), MPSInput::field2(), MPSInput::field3(), SPxSolver::FIXED, MPSInput::hasError(), SoPlex::INFTY, SPxSolver::loadLP(), SoPlex::lowerRealInternal(), SPxBasis::NO_PROBLEM, NameSet::number(), SoPlex::numColsReal(), SoPlex::numRowsReal(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SoPlex::RANGETYPE_FIXED, SoPlex::RANGETYPE_LOWER, SoPlex::RANGETYPE_UPPER, SPxSolver::readBasisFile(), SoPlex::Statistics::readingTime, MPSInput::readLine(), SoPlex::realParam(), NameSet::reMax(), DataArray< T >::reSize(), MPSInput::setSection(), soplex::spx_alloc(), soplex::spx_free(), Timer::start(), SPxBasis::status(), Timer::stop(), MPSInput::syntaxError(), SoPlex::upperRealInternal(), SPxSolver::ZERO, and NameSet::~NameSet().

Referenced by main(), and SoPlex::solve().

◆ readFile()

bool readFile	(	const char *	filename,
		NameSet *	rowNames = `0`,
		NameSet *	colNames = `0`,
		DIdxSet *	intVars = `0`
	)

reads LP file in LP or MPS format according to READMODE parameter; gets row names, column names, and integer variables if desired; returns true on success

Definition at line 5081 of file soplex.cpp.

References SoPlex::_colNames, SoPlex::_readFileRational(), SoPlex::_readFileReal(), SoPlex::_rowNames, SoPlex::intParam(), SoPlex::READMODE, and SoPlex::READMODE_REAL.

Referenced by main(), and SoPlex::solve().

◆ realParam()

Real realParam ( const RealParam param ) const

returns real parameter value

Definition at line 5510 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::Settings::_realParamValues, and SoPlex::REALPARAM_COUNT.

◆ removeColRangeRational()

void removeColRangeRational	(	int	start,
		int	end,
		int	perm[] = `0`
	)

removes columns start to end including both; an array perm of size numColsRational() may be passed as buffer memory

Definition at line 2735 of file soplex.cpp.

References SoPlex::_rangeToPerm(), DataArray< T >::get_ptr(), SoPlex::numColsRational(), and SoPlex::removeColsRational().

◆ removeColRangeReal()

void removeColRangeReal	(	int	start,
		int	end,
		int	perm[] = `0`
	)

removes columns start to end including both; an array perm of size numColsReal() may be passed as buffer memory

Definition at line 1849 of file soplex.cpp.

References SoPlex::_rangeToPerm(), DataArray< T >::get_ptr(), SoPlex::numColsReal(), and SoPlex::removeColsReal().

◆ removeColRational()

void removeColRational ( int i )

removes column i

Definition at line 2659 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_removeColReal(), SoPlex::intParam(), SoPlex::lowerRational(), SPxLPBase< R >::nCols(), SPxLPBase< R >::removeCol(), DataArray< T >::reSize(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, and SoPlex::upperRational().

◆ removeColReal()

void removeColReal ( int i )

removes column i

Definition at line 1775 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_removeColReal(), SoPlex::intParam(), SoPlex::lowerRational(), SPxLPBase< R >::nCols(), SPxLPBase< R >::removeCol(), DataArray< T >::reSize(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::upperRational().

◆ removeColsRational() [1/2]

void removeColsRational ( int perm[] )

removes all columns with an index i such that perm[i] < 0; upon completion, perm[i] >= 0 indicates the new index where column i has been moved to; note that perm must point to an array of size at least numColsRational()

Definition at line 2686 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_removeColsReal(), SoPlex::intParam(), SoPlex::lowerRational(), SPxLPBase< R >::nCols(), SoPlex::numColsRational(), SPxLPBase< R >::removeCols(), DataArray< T >::reSize(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_ONLYREAL, and SoPlex::upperRational().

Referenced by SoPlex::removeColRangeRational(), and SoPlex::removeColsRational().

◆ removeColsRational() [2/2]

void removeColsRational	(	int	idx[],
		int	n,
		int	perm[] = `0`
	)

remove all columns with indices in array idx of size n; an array perm of size numColsRational() may be passed as buffer memory

Definition at line 2716 of file soplex.cpp.

References SoPlex::_idxToPerm(), DataArray< T >::get_ptr(), SoPlex::numColsRational(), and SoPlex::removeColsRational().

◆ removeColsReal() [1/2]

void removeColsReal ( int perm[] )

removes all columns with an index i such that perm[i] < 0; upon completion, perm[i] >= 0 indicates the new index where column i has been moved to; note that perm must point to an array of size at least numColsReal()

Definition at line 1801 of file soplex.cpp.

References SoPlex::_colTypes, SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_removeColsReal(), SoPlex::intParam(), SoPlex::lowerRational(), SPxLPBase< R >::nCols(), SoPlex::numColsRational(), SoPlex::numColsReal(), SPxLPBase< R >::removeCols(), DataArray< T >::reSize(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::upperRational().

Referenced by SoPlex::removeColRangeReal(), and SoPlex::removeColsReal().

◆ removeColsReal() [2/2]

void removeColsReal	(	int	idx[],
		int	n,
		int	perm[] = `0`
	)

remove all columns with indices in array idx of size n; an array perm of size numColsReal() may be passed as buffer memory

Definition at line 1830 of file soplex.cpp.

References SoPlex::_idxToPerm(), DataArray< T >::get_ptr(), SoPlex::numColsReal(), and SoPlex::removeColsReal().

◆ removeRowRangeRational()

void removeRowRangeRational	(	int	start,
		int	end,
		int	perm[] = `0`
	)

removes rows start to end including both; an array perm of size numRowsRational() may be passed as buffer memory

Definition at line 2641 of file soplex.cpp.

References SoPlex::_rangeToPerm(), DataArray< T >::get_ptr(), SoPlex::numRowsRational(), and SoPlex::removeRowsRational().

◆ removeRowRangeReal()

void removeRowRangeReal	(	int	start,
		int	end,
		int	perm[] = `0`
	)

removes rows start to end including both; an array perm of size numRowsReal() may be passed as buffer memory

Definition at line 1757 of file soplex.cpp.

References SoPlex::_rangeToPerm(), DataArray< T >::get_ptr(), SoPlex::numRowsReal(), and SoPlex::removeRowsReal().

◆ removeRowRational()

void removeRowRational ( int i )

removes row i

Definition at line 2564 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_removeRowReal(), SoPlex::_rowTypes, SoPlex::intParam(), SoPlex::lhsRational(), SPxLPBase< R >::nRows(), SPxLPBase< R >::removeRow(), DataArray< T >::reSize(), SoPlex::rhsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

◆ removeRowReal()

void removeRowReal ( int i )

removes row i

Definition at line 1683 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_removeRowReal(), SoPlex::_rowTypes, SoPlex::intParam(), SoPlex::lhsRational(), SPxLPBase< R >::nRows(), SPxLPBase< R >::removeRow(), DataArray< T >::reSize(), SoPlex::rhsRational(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

◆ removeRowsRational() [1/2]

void removeRowsRational ( int perm[] )

removes all rows with an index i such that perm[i] < 0; upon completion, perm[i] >= 0 indicates the new index where row i has been moved to; note that perm must point to an array of size at least numRowsRational()

Definition at line 2591 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_removeRowsReal(), SoPlex::_rowTypes, SoPlex::intParam(), SoPlex::lhsRational(), SPxLPBase< R >::nRows(), SoPlex::numRowsRational(), SPxLPBase< R >::removeRows(), DataArray< T >::reSize(), SoPlex::rhsRational(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, and SoPlex::SYNCMODE_ONLYREAL.

Referenced by SoPlex::removeRowRangeRational(), and SoPlex::removeRowsRational().

◆ removeRowsRational() [2/2]

void removeRowsRational	(	int	idx[],
		int	n,
		int	perm[] = `0`
	)

remove all rows with indices in array idx of size n; an array perm of size numRowsRational() may be passed as buffer memory

Definition at line 2622 of file soplex.cpp.

References SoPlex::_idxToPerm(), DataArray< T >::get_ptr(), SoPlex::numRowsRational(), and SoPlex::removeRowsRational().

◆ removeRowsReal() [1/2]

void removeRowsReal ( int perm[] )

removes all rows with an index i such that perm[i] < 0; upon completion, perm[i] >= 0 indicates the new index where row i has been moved to; note that perm must point to an array of size at least numRowsReal()

Definition at line 1709 of file soplex.cpp.

References SoPlex::_invalidateSolution(), SoPlex::_rangeTypeRational(), SoPlex::_rationalLP, SoPlex::_realLP, SoPlex::_removeRowsReal(), SoPlex::_rowTypes, SoPlex::intParam(), SoPlex::lhsRational(), SPxLPBase< R >::nRows(), SoPlex::numRowsRational(), SoPlex::numRowsReal(), SPxLPBase< R >::removeRows(), DataArray< T >::reSize(), SoPlex::rhsRational(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_AUTO.

Referenced by SoPlex::removeRowRangeReal(), and SoPlex::removeRowsReal().

◆ removeRowsReal() [2/2]

void removeRowsReal	(	int	idx[],
		int	n,
		int	perm[] = `0`
	)

remove all rows with indices in array idx of size n; an array perm of size numRowsReal() may be passed as buffer memory

Definition at line 1738 of file soplex.cpp.

References SoPlex::_idxToPerm(), DataArray< T >::get_ptr(), SoPlex::numRowsReal(), and SoPlex::removeRowsReal().

◆ resetSettings()

void resetSettings	(	const bool	quiet = `false`,
		const bool	init = `true`
	)

resets default parameter settings

Definition at line 6143 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::Settings::boolParam, SoPlex::BOOLPARAM_COUNT, SoPlex::Settings::BoolParam::defaultValue, SoPlex::Settings::IntParam::defaultValue, SoPlex::Settings::RealParam::defaultValue, SoPlex::Settings::intParam, SoPlex::INTPARAM_COUNT, SoPlex::Settings::realParam, SoPlex::REALPARAM_COUNT, SoPlex::setBoolParam(), SoPlex::setIntParam(), and SoPlex::setRealParam().

◆ rhsRational() [1/2]

const VectorRational & rhsRational ( ) const

◆ rhsRational() [2/2]

const Rational & rhsRational ( int i ) const

returns right-hand side of row i

Definition at line 1157 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::rhs().

◆ rhsReal()

Real rhsReal ( int i ) const

returns right-hand side of row i

Definition at line 887 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::rhsUnscaled().

Referenced by SoPlex::_changeLhsReal(), SoPlex::_transformFeasibility(), SoPlex::_untransformFeasibility(), and SoPlex::_untransformUnbounded().

◆ rhsRealInternal()

const VectorReal & rhsRealInternal ( ) const

returns right-hand side vector, ignoring scaling

Definition at line 869 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::rhs().

◆ rowTypeRational()

LPRowRational::Type rowTypeRational ( int i ) const

returns inequality type of row i

Definition at line 1184 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::rowType().

◆ rowTypeReal()

LPRowReal::Type rowTypeReal ( int i ) const

returns inequality type of row i

Definition at line 923 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::rowType().

◆ rowVectorRational()

const SVectorRational & rowVectorRational ( int i ) const

returns vector of row i

Definition at line 1139 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::rowVector().

◆ rowVectorRealInternal()

const SVectorReal & rowVectorRealInternal ( int i ) const

returns vector of row i, ignoring scaling

Definition at line 843 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::rowVector().

Referenced by SoPlex::getBasisInverseTimesVecReal().

◆ saveSettingsFile()

bool saveSettingsFile	(	const char *	filename,
		const bool	onlyChanged = `false`
	)		const

writes settings file; returns true on success

Definition at line 6217 of file soplex.cpp.

References SoPlex::Settings::_boolParamValues, SoPlex::_currentSettings, SoPlex::Settings::_intParamValues, SoPlex::Settings::_realParamValues, SoPlex::_solver, SoPlex::Settings::boolParam, SoPlex::BOOLPARAM_COUNT, DEFAULT_RANDOM_SEED, SoPlex::Settings::BoolParam::defaultValue, SoPlex::Settings::IntParam::defaultValue, SoPlex::Settings::RealParam::defaultValue, SoPlex::Settings::BoolParam::description, SoPlex::Settings::IntParam::description, SoPlex::Settings::RealParam::description, Random::getSeed(), SoPlex::Settings::intParam, SoPlex::INTPARAM_COUNT, SoPlex::Settings::IntParam::lower, SoPlex::Settings::RealParam::lower, SoPlex::Settings::BoolParam::name, SoPlex::Settings::IntParam::name, SoPlex::Settings::RealParam::name, SPxSolver::random, SoPlex::Settings::realParam, SoPlex::REALPARAM_COUNT, SOPLEX_SUBVERSION, SOPLEX_VERSION, SoPlex::Settings::IntParam::upper, and SoPlex::Settings::RealParam::upper.

Referenced by main(), SoPlex::writeStateRational(), and SoPlex::writeStateReal().

◆ setBasis()

void setBasis	(	const SPxSolver::VarStatus	rows[],
		const SPxSolver::VarStatus	cols[]
	)

sets starting basis via arrays of statuses

Definition at line 4958 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rationalLUSolver, SoPlex::_solver, SPxSolver::basis(), SLUFactorRational::clear(), SPxLPBase< R >::nCols(), SPxBasis::NO_PROBLEM, SPxLPBase< R >::nRows(), SoPlex::numColsReal(), SoPlex::numRowsReal(), DataArray< T >::reSize(), SPxSolver::setBasis(), and SPxBasis::status().

Referenced by SoPlex::solve().

◆ setBoolParam()

bool setBoolParam	(	const BoolParam	param,
		const bool	value,
		const bool	init = `true`
	)

sets boolean parameter value; returns true on success

Definition at line 5540 of file soplex.cpp.

References SoPlex::Settings::_boolParamValues, SoPlex::_currentSettings, SoPlex::_isConsistent(), SoPlex::_ratiotesterBoundFlipping, SoPlex::_solver, SoPlex::ACCEPTCYCLING, SoPlex::boolParam(), SoPlex::BOOLPARAM_COUNT, SoPlex::COMPUTEDEGEN, SoPlex::EQTRANS, SoPlex::EXPLICITVIOL, SoPlex::FULLPERTURBATION, SoPlex::LIFTING, SoPlex::PERSISTENTSCALING, SoPlex::POWERSCALING, SoPlex::RATFAC, SoPlex::RATFACJUMP, SoPlex::RATREC, SoPlex::ROWBOUNDFLIPS, SoPlex::TESTDUALINF, SPxBoundFlippingRT::useBoundFlipsRow(), SoPlex::USECOMPDUAL, SoPlex::USEDECOMPDUALSIMPLEX, and SPxSolver::useFullPerturbation().

Referenced by SoPlex::_optimizeRational(), SoPlex::_parseSettingsLine(), SoPlex::parseSettingsString(), SoPlex::resetSettings(), and SoPlex::setSettings().

◆ setDualNorms()

bool setDualNorms	(	int	nnormsRow,
		int	nnormsCol,
		Real *	norms
	)

sets steepest edge norms and returns false if that's not possible

Definition at line 1059 of file soplex.cpp.

References SoPlex::_solver, and SPxSolver::setDualNorms().

◆ setIntegralityInformation()

void setIntegralityInformation	(	int	ncols,
		int *	intInfo
	)

pass integrality information about the variables to the solver

Definition at line 1067 of file soplex.cpp.

References SoPlex::_solver, SPxLPBase< R >::nCols(), and SPxSolver::setIntegralityInformation().

◆ setIntParam()

bool setIntParam	(	const IntParam	param,
		const int	value,
		const bool	init = `true`
	)

sets integer parameter value; returns true on success

Definition at line 5594 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::_ensureRationalLP(), SoPlex::Settings::_intParamValues, SoPlex::_invalidateSolution(), SoPlex::_isConsistent(), SoPlex::_pricerAuto, SoPlex::_pricerDantzig, SoPlex::_pricerDevex, SoPlex::_pricerParMult, SoPlex::_pricerQuickSteep, SoPlex::_pricerSteep, SoPlex::_rationalLP, SoPlex::_ratiotesterBoundFlipping, SoPlex::_ratiotesterFast, SoPlex::_ratiotesterHarris, SoPlex::_ratiotesterTextbook, SoPlex::_realLP, SoPlex::_scaler, SoPlex::_scalerBiequi, SoPlex::_scalerGeo1, SoPlex::_scalerGeo8, SoPlex::_scalerLeastsq, SoPlex::_scalerUniequi, SoPlex::_simplifier, SoPlex::_simplifierMainSM, SoPlex::_slufactor, SoPlex::_solver, SoPlex::_starter, SoPlex::_starterSum, SoPlex::_starterVector, SoPlex::_starterWeight, SoPlex::_syncLPRational(), SoPlex::ALGORITHM, SPxSolver::basis(), SPxLPBase< R >::changeSense(), SoPlex::CHECKMODE, SoPlex::CHECKMODE_AUTO, SoPlex::CHECKMODE_RATIONAL, SoPlex::CHECKMODE_REAL, SPxOut::DEBUG, SoPlex::DECOMP_DISPLAYFREQ, SoPlex::DECOMP_ITERLIMIT, SoPlex::DECOMP_MAXADDEDROWS, SoPlex::DECOMP_VERBOSITY, SoPlex::DISPLAYFREQ, SPxOut::ERROR, SLUFactor::ETA, SoPlex::FACTOR_UPDATE_MAX, SoPlex::FACTOR_UPDATE_TYPE, SoPlex::FACTOR_UPDATE_TYPE_ETA, SoPlex::FACTOR_UPDATE_TYPE_FT, SLUFactor::FOREST_TOMLIN, SoPlex::HYPER_PRICING, SoPlex::HYPER_PRICING_AUTO, SoPlex::HYPER_PRICING_OFF, SoPlex::HYPER_PRICING_ON, SPxOut::INFO1, SPxOut::INFO2, SPxOut::INFO3, SoPlex::Settings::intParam, SoPlex::intParam(), SoPlex::INTPARAM_COUNT, SoPlex::ITERLIMIT, SoPlex::LEASTSQ_MAXROUNDS, SPxLPBase< Real >::MAXIMIZE, SPxLPBase< R >::MAXIMIZE, SPxLPBase< R >::MINIMIZE, SPxLPBase< Real >::MINIMIZE, SoPlex::OBJSENSE, SoPlex::OBJSENSE_MAXIMIZE, SoPlex::OBJSENSE_MINIMIZE, Timer::OFF, SoPlex::POLISHING_MAXBASICSLACK, SoPlex::POLISHING_MINBASICSLACK, SoPlex::POLISHING_OFF, SoPlex::PRICER, SoPlex::PRICER_AUTO, SoPlex::PRICER_DANTZIG, SoPlex::PRICER_DEVEX, SoPlex::PRICER_PARMULT, SoPlex::PRICER_QUICKSTEEP, SoPlex::PRICER_STEEP, SoPlex::RATFAC_MINSTALLS, SoPlex::RATIOTESTER, SoPlex::RATIOTESTER_BOUNDFLIPPING, SoPlex::RATIOTESTER_FAST, SoPlex::RATIOTESTER_HARRIS, SoPlex::RATIOTESTER_TEXTBOOK, SoPlex::READMODE, SoPlex::READMODE_RATIONAL, SoPlex::READMODE_REAL, SoPlex::REFLIMIT, SoPlex::REPRESENTATION, SoPlex::REPRESENTATION_AUTO, SoPlex::REPRESENTATION_COLUMN, SoPlex::REPRESENTATION_ROW, SoPlex::SCALER, SoPlex::SCALER_BIEQUI, SoPlex::SCALER_GEO1, SoPlex::SCALER_GEO8, SoPlex::SCALER_LEASTSQ, SoPlex::SCALER_OFF, SoPlex::SCALER_UNIEQUI, SPxSolver::setDisplayFreq(), SPxScaler::setIntParam(), SPxBasis::setMaxUpdates(), SPxSolver::setPricer(), SPxSolver::setSolutionPolishing(), SPxSolver::setTester(), SPxSolver::setTiming(), SLUFactor::setUtype(), SPxOut::setVerbosity(), SoPlex::SIMPLIFIER, SoPlex::SIMPLIFIER_AUTO, SoPlex::SIMPLIFIER_OFF, SoPlex::SOLUTION_POLISHING, SoPlex::SOLVEMODE, SoPlex::SOLVEMODE_AUTO, SoPlex::SOLVEMODE_RATIONAL, SoPlex::SOLVEMODE_REAL, soplex::spx_free(), SoPlex::spxout, SoPlex::STALLREFLIMIT, SoPlex::STARTER, SoPlex::STARTER_OFF, SoPlex::STARTER_SUM, SoPlex::STARTER_VECTOR, SoPlex::STARTER_WEIGHT, SoPlex::SYNCMODE, SoPlex::SYNCMODE_AUTO, SoPlex::SYNCMODE_MANUAL, SoPlex::SYNCMODE_ONLYREAL, SoPlex::TIMER, SoPlex::TIMER_CPU, SoPlex::TIMER_OFF, SoPlex::TIMER_WALLCLOCK, SoPlex::Settings::IntParam::upper, Timer::USER_TIME, SoPlex::VERBOSITY, Timer::WALLCLOCK_TIME, and SPxOut::WARNING.

Referenced by SoPlex::_evaluateSolutionReal(), SoPlex::_optimizeRational(), SoPlex::_parseSettingsLine(), SoPlex::_readFileRational(), SoPlex::_readFileReal(), SoPlex::_solveRealStable(), main(), SoPlex::operator=(), SoPlex::optimize(), SoPlex::parseSettingsString(), SoPlex::resetSettings(), and SoPlex::setSettings().

◆ setRandomSeed()

void setRandomSeed ( unsigned int seed )

set the random seeds of the solver instance

set the random seed of the solver instance

Definition at line 7091 of file soplex.cpp.

References SoPlex::_solver, SPxSolver::random, and Random::setSeed().

Referenced by SoPlex::_parseSettingsLine(), and SoPlex::parseSettingsString().

◆ setRealParam()

bool setRealParam	(	const RealParam	param,
		const Real	value,
		const bool	init = `true`
	)

sets real parameter value; returns true on success

Definition at line 5936 of file soplex.cpp.

References SoPlex::_currentSettings, SoPlex::_isConsistent(), SoPlex::_rationalFeastol, SoPlex::_rationalLP, SoPlex::_rationalMaxscaleincr, SoPlex::_rationalNegInfty, SoPlex::_rationalOpttol, SoPlex::_rationalPosInfty, SoPlex::_realLP, SoPlex::Settings::_realParamValues, SoPlex::_recomputeRangeTypesRational(), SoPlex::_scaler, SPxLPBase< R >::changeObjOffset(), DEFAULT_EPS_ZERO, SoPlex::EPSILON_FACTORIZATION, SoPlex::EPSILON_PIVOT, SoPlex::EPSILON_UPDATE, SoPlex::EPSILON_ZERO, SoPlex::FEASTOL, SoPlex::FPFEASTOL, SoPlex::FPOPTTOL, SoPlex::INFTY, SoPlex::intParam(), SoPlex::LEASTSQ_ACRCY, SoPlex::LIFTMAXVAL, SoPlex::LIFTMINVAL, SoPlex::MAXSCALEINCR, SoPlex::MINRED, MSG_WARNING, SoPlex::OBJ_OFFSET, SoPlex::OBJLIMIT_LOWER, SoPlex::OBJLIMIT_UPPER, SoPlex::OPTTOL, SoPlex::RATREC_FREQ, SoPlex::Settings::realParam, SoPlex::realParam(), SoPlex::REALPARAM_COUNT, SoPlex::REFAC_BASIS_NNZ, SoPlex::REFAC_MEM_FACTOR, SoPlex::REFAC_UPDATE_FILL, SoPlex::REPRESENTATION_SWITCH, Param::setEpsilon(), Param::setEpsilonFactorization(), Param::setEpsilonPivot(), Param::setEpsilonUpdate(), SPxScaler::setRealParam(), SoPlex::SPARSITY_THRESHOLD, SoPlex::spxout, SoPlex::SYNCMODE, SoPlex::SYNCMODE_ONLYREAL, SoPlex::TIMELIMIT, and SoPlex::Settings::RealParam::upper.

Referenced by SoPlex::_parseSettingsLine(), main(), SoPlex::parseSettingsString(), SoPlex::resetSettings(), and SoPlex::setSettings().

◆ setSettings()

bool setSettings	(	const Settings &	newSettings,
		const bool	init = `true`
	)

sets parameter settings; returns true on success

Definition at line 6115 of file soplex.cpp.

References SoPlex::Settings::_boolParamValues, SoPlex::_currentSettings, SoPlex::Settings::_intParamValues, SoPlex::_isConsistent(), SoPlex::Settings::_realParamValues, SoPlex::BOOLPARAM_COUNT, SoPlex::INTPARAM_COUNT, SoPlex::REALPARAM_COUNT, SoPlex::setBoolParam(), SoPlex::setIntParam(), and SoPlex::setRealParam().

Referenced by SoPlex::SoPlex().

◆ settings()

const SoPlex::Settings & settings ( ) const

returns current parameter settings

Definition at line 5532 of file soplex.cpp.

References SoPlex::_currentSettings.

Referenced by SoPlex::Settings::Settings().

◆ solve()

SPxSolver::Status solve ( )

Definition at line 573 of file soplex.h.

◆ solveTime()

Real solveTime ( ) const

time spent in last call to solve

Definition at line 5007 of file soplex.cpp.

References SoPlex::_statistics, SoPlex::Statistics::solvingTime, and Timer::time().

Referenced by SoPlex::_formDecompReducedProblem(), SoPlex::solve(), and SoPlex::statisticString().

◆ statisticString()

std::string statisticString ( ) const

statistical information in form of a string

Definition at line 5015 of file soplex.cpp.

References SoPlex::_statistics, SoPlex::Statistics::luFactorizationsReal, SoPlex::Statistics::luFactorizationTimeReal, SoPlex::Statistics::luSolvesReal, SoPlex::Statistics::luSolveTimeReal, SoPlex::numIterations(), and SoPlex::solveTime().

Referenced by SoPlex::solve().

◆ status()

SPxSolver::Status status ( ) const

returns the current solver status

Definition at line 2882 of file soplex.cpp.

References SoPlex::_status.

Referenced by SoPlex::_storeSolutionReal(), SoPlex::basisStatus(), SoPlex::objValueRational(), SoPlex::objValueReal(), SoPlex::optimize(), and SoPlex::solve().

◆ syncLPRational()

void syncLPRational ( )

synchronizes rational LP with real LP, i.e., copies real LP to rational LP, if sync mode is manual

Definition at line 2777 of file soplex.cpp.

References SoPlex::_isConsistent(), SoPlex::_syncLPRational(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_MANUAL.

◆ syncLPReal()

void syncLPReal ( )

synchronizes real LP with rational LP, i.e., copies (rounded) rational LP into real LP, if sync mode is manual

Definition at line 1888 of file soplex.cpp.

References SoPlex::_isConsistent(), SoPlex::_syncLPReal(), SoPlex::intParam(), SoPlex::SYNCMODE, and SoPlex::SYNCMODE_MANUAL.

◆ totalSizeDualRational()

int totalSizeDualRational ( const int base = 2 )

get size of dual solution

Definition at line 3758 of file soplex.cpp.

References SoPlex::_solRational, SoPlex::_syncRationalSolution(), SoPlex::hasDual(), SoPlex::hasDualFarkas(), and SolBase< R >::totalSizeDual().

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ totalSizePrimalRational()

int totalSizePrimalRational ( const int base = 2 )

get size of primal solution

Definition at line 3744 of file soplex.cpp.

References SoPlex::_solRational, SoPlex::_syncRationalSolution(), SoPlex::hasPrimal(), SoPlex::hasPrimalRay(), and SolBase< R >::totalSizePrimal().

Referenced by SoPlex::printSolutionStatistics(), and SoPlex::solve().

◆ upperRational() [1/2]

const VectorRational & upperRational ( ) const

◆ upperRational() [2/2]

const Rational & upperRational ( int i ) const

returns upper bound of column i

Definition at line 1229 of file soplex.cpp.

References SoPlex::_rationalLP, and SPxLPBase< R >::upper().

◆ upperReal()

Real upperReal ( int i ) const

returns upper bound of column i

Definition at line 959 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::upperUnscaled().

Referenced by SoPlex::_changeLowerReal(), SoPlex::_transformFeasibility(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::basisColStatus(), and SoPlex::getBasis().

◆ upperRealInternal()

const VectorReal & upperRealInternal ( ) const

returns upper bound vector

Definition at line 950 of file soplex.cpp.

References SoPlex::_realLP, and SPxLPBase< R >::upper().

Referenced by SoPlex::readBasisFile().

◆ writeBasisFile()

bool writeBasisFile	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`,
		const bool	cpxFormat = `false`
	)		const

writes basis information to filename; if rowNames and colNames are NULL, default names are used; returns true on success

Definition at line 5351 of file soplex.cpp.

References SoPlex::_basisStatusCols, SoPlex::_basisStatusRows, SoPlex::_hasBasis, SoPlex::_isRealLPLoaded, SoPlex::_rowTypes, SoPlex::_solver, SPxSolver::BASIC, NameSet::has(), SPxSolver::ON_UPPER, SoPlex::RANGETYPE_BOXED, DataArray< T >::size(), SPxSolver::UNDEFINED, and SPxSolver::writeBasisFile().

Referenced by SoPlex::_writeOriginalProblemBasis(), main(), SoPlex::solve(), SoPlex::writeStateRational(), and SoPlex::writeStateReal().

◆ writeDualFileReal()

bool writeDualFileReal	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`,
		const DIdxSet *	intvars = `0`
	)		const

writes the dual of the real LP to file; LP or MPS format is chosen from the extension in filename; if rowNames and colNames are NULL, default names are used; if intVars is not NULL, the variables contained in it are marked as integer; returns true on success

Definition at line 5144 of file soplex.cpp.

References SoPlex::_realLP, SPxLPBase< R >::buildDualProblem(), SPxLPBase< R >::setOutstream(), SoPlex::spxout, and SPxLPBase< R >::writeFile().

Referenced by main(), and SoPlex::solve().

◆ writeFileRational()

bool writeFileRational	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`,
		const DIdxSet *	intvars = `0`
	)		const

writes rational LP to file; LP or MPS format is chosen from the extension in filename; if rowNames and colNames are NULL, default names are used; if intVars is not NULL, the variables contained in it are marked as integer; returns true on success

Todo:: implement return value

Definition at line 5125 of file soplex.cpp.

References SoPlex::_rationalLP, SoPlex::intParam(), SoPlex::SYNCMODE, SoPlex::SYNCMODE_ONLYREAL, and SPxLPBase< R >::writeFile().

Referenced by SoPlex::solve(), and SoPlex::writeStateRational().

◆ writeFileReal()

bool writeFileReal	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`,
		const DIdxSet *	intvars = `0`,
		const bool	unscale = `false`
	)		const

writes real LP to file; LP or MPS format is chosen from the extension in filename; if rowNames and colNames are NULL, default names are used; if intVars is not NULL, the variables contained in it are marked as integer; returns true on success

Todo:: implement return value

Definition at line 5099 of file soplex.cpp.

References SoPlex::_realLP, SPxLPBase< R >::isScaled(), soplex::spx_alloc(), soplex::spx_free(), SPxLPBase< R >::unscaleLP(), and SPxLPBase< R >::writeFile().

Referenced by main(), SoPlex::solve(), and SoPlex::writeStateReal().

◆ writeStateRational()

void writeStateRational	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`,
		const bool	cpxFormat = `false`
	)		const

writes internal LP, basis information, and parameter settings; if rowNames and colNames are NULL, default names are used

Definition at line 5470 of file soplex.cpp.

References SoPlex::saveSettingsFile(), SoPlex::writeBasisFile(), and SoPlex::writeFileRational().

Referenced by SoPlex::solve().

◆ writeStateReal()

void writeStateReal	(	const char *	filename,
		const NameSet *	rowNames = `0`,
		const NameSet *	colNames = `0`,
		const bool	cpxFormat = `false`
	)		const

writes internal LP, basis information, and parameter settings; if rowNames and colNames are NULL, default names are used

Definition at line 5449 of file soplex.cpp.

References SoPlex::saveSettingsFile(), SoPlex::writeBasisFile(), and SoPlex::writeFileReal().

Referenced by SoPlex::solve().

Member Data Documentation

◆ _applyPolishing

bool _applyPolishing

private

Definition at line 1572 of file soplex.h.

Referenced by SoPlex::_evaluateSolutionReal(), SoPlex::_preprocessAndSolveReal(), SoPlex::operator=(), and SoPlex::SoPlex().

◆ _basisStatusCols

DataArray< SPxSolver::VarStatus > _basisStatusCols

private

Definition at line 1787 of file soplex.h.

Referenced by SoPlex::_addColReal(), SoPlex::_addColsReal(), SoPlex::_changeBoundsReal(), SoPlex::_changeColReal(), SoPlex::_changeElementReal(), SoPlex::_changeLowerReal(), SoPlex::_changeUpperReal(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_ensureRealLPLoaded(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_factorizeColumnRational(), SoPlex::_formDecompReducedProblem(), SoPlex::_isConsistent(), SoPlex::_lift(), SoPlex::_optimizeRational(), SoPlex::_performOptIRStable(), SoPlex::_preprocessAndSolveReal(), SoPlex::_project(), SoPlex::_reconstructSolutionRational(), SoPlex::_removeColReal(), SoPlex::_removeColsReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_restoreBasis(), SoPlex::_restoreLPReal(), SoPlex::_storeBasis(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_transformEquality(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformEquality(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::_writeOriginalProblemBasis(), SoPlex::basisColStatus(), SoPlex::getBasis(), SoPlex::getBasisInd(), SoPlex::getOriginalProblemBasisColStatus(), SoPlex::operator=(), SoPlex::readBasisFile(), SoPlex::setBasis(), and SoPlex::writeBasisFile().

◆ _basisStatusRows

DataArray< SPxSolver::VarStatus > _basisStatusRows

private

Definition at line 1786 of file soplex.h.

Referenced by SoPlex::_addColReal(), SoPlex::_addRowReal(), SoPlex::_addRowsReal(), SoPlex::_changeElementReal(), SoPlex::_changeLhsReal(), SoPlex::_changeRangeReal(), SoPlex::_changeRhsReal(), SoPlex::_changeRowReal(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_ensureRealLPLoaded(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_factorizeColumnRational(), SoPlex::_formDecompReducedProblem(), SoPlex::_isConsistent(), SoPlex::_lift(), SoPlex::_optimizeRational(), SoPlex::_performOptIRStable(), SoPlex::_preprocessAndSolveReal(), SoPlex::_project(), SoPlex::_reconstructSolutionRational(), SoPlex::_removeRowReal(), SoPlex::_removeRowsReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_restoreBasis(), SoPlex::_restoreLPReal(), SoPlex::_storeBasis(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_transformEquality(), SoPlex::_transformUnbounded(), SoPlex::_untransformEquality(), SoPlex::_untransformUnbounded(), SoPlex::_writeOriginalProblemBasis(), SoPlex::basisRowStatus(), SoPlex::getBasis(), SoPlex::getBasisInd(), SoPlex::getOriginalProblemBasisRowStatus(), SoPlex::operator=(), SoPlex::readBasisFile(), SoPlex::setBasis(), and SoPlex::writeBasisFile().

◆ _beforeLiftCols

int _beforeLiftCols

private

Definition at line 1613 of file soplex.h.

Referenced by SoPlex::_lift(), and SoPlex::_project().

◆ _beforeLiftRows

int _beforeLiftRows

private

Definition at line 1612 of file soplex.h.

Referenced by SoPlex::_lift(), and SoPlex::_project().

◆ _colNames

NameSet* _colNames

private

Definition at line 1749 of file soplex.h.

Referenced by SoPlex::readFile().

◆ _colTypes

DataArray< RangeType > _colTypes

private

Definition at line 1634 of file soplex.h.

Referenced by SoPlex::_completeRangeTypesRational(), SoPlex::_computeInfeasBox(), SoPlex::_factorizeColumnRational(), SoPlex::_isConsistent(), SoPlex::_performOptIRStable(), SoPlex::_recomputeRangeTypesRational(), SoPlex::_recomputeRangeTypesReal(), SoPlex::_reconstructSolutionRational(), SoPlex::_transformEquality(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformEquality(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::changeBoundsRational(), SoPlex::changeBoundsReal(), SoPlex::changeColRational(), SoPlex::changeColReal(), SoPlex::changeLowerRational(), SoPlex::changeLowerReal(), SoPlex::changeUpperRational(), SoPlex::changeUpperReal(), SoPlex::clearLPRational(), SoPlex::clearLPReal(), SoPlex::getRedCostViolationRational(), SoPlex::removeColRational(), SoPlex::removeColReal(), SoPlex::removeColsRational(), and SoPlex::removeColsReal().

◆ _compSlackColId

SPxColId _compSlackColId

private

Definition at line 1706 of file soplex.h.

Referenced by SoPlex::_deleteAndUpdateRowsComplementaryProblem(), SoPlex::_findViolatedRows(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_setComplementaryPrimalOriginalObjective(), and SoPlex::_updateDecompComplementaryPrimalProblem().

◆ _compSlackDualRowId

SPxRowId _compSlackDualRowId

private

Definition at line 1707 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_setComplementaryDualOriginalObjective(), SoPlex::_updateComplementaryDualFixedPrimalVars(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _compSlufactor

SLUFactor _compSlufactor

private

Definition at line 1699 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), and SoPlex::_solveDecompositionDualSimplex().

◆ _compSolver

SPxSolver _compSolver

private

Definition at line 1695 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_deleteAndUpdateRowsComplementaryProblem(), SoPlex::_findViolatedRows(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_removeComplementaryDualFixedPrimalVars(), SoPlex::_setComplementaryDualOriginalObjective(), SoPlex::_setComplementaryPrimalOriginalObjective(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualFixedPrimalVars(), SoPlex::_updateComplementaryDualSlackColCoeff(), SoPlex::_updateComplementaryPrimalFixedPrimalVars(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), SoPlex::_updateDecompReducedProblem(), and SoPlex::getCompSlackVarCoeff().

◆ _currentProb

decompStatus _currentProb

private

Definition at line 1775 of file soplex.h.

Referenced by SoPlex::_decompSimplifyAndSolve(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_solveDecompositionDualSimplex(), and SoPlex::SoPlex().

◆ _currentSettings

Settings* _currentSettings

private

◆ _decompColStatus

int* _decompColStatus

private

Definition at line 1711 of file soplex.h.

◆ _decompCompPrimalColIDs

DataArray< SPxColId > _decompCompPrimalColIDs

private

Definition at line 1728 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_setComplementaryPrimalOriginalObjective(), and SoPlex::_updateComplementaryPrimalFixedPrimalVars().

◆ _decompCompPrimalFixedVarIDs

DataArray< SPxColId > _decompCompPrimalFixedVarIDs

private

Definition at line 1724 of file soplex.h.

◆ _decompCompPrimalRowIDs

DataArray< SPxRowId > _decompCompPrimalRowIDs

private

Definition at line 1727 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), and SoPlex::_updateDecompReducedProblem().

◆ _decompCompPrimalVarBoundIDs

DataArray< SPxColId > _decompCompPrimalVarBoundIDs

private

Definition at line 1725 of file soplex.h.

◆ _decompCompProbColIDsIdx

int* _decompCompProbColIDsIdx

private

Definition at line 1712 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_removeComplementaryDualFixedPrimalVars(), SoPlex::_setComplementaryDualOriginalObjective(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualFixedPrimalVars(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _decompDisplayLine

int _decompDisplayLine

private

Definition at line 1746 of file soplex.h.

Referenced by SoPlex::_solveDecompositionDualSimplex(), and SoPlex::printDecompDisplayLine().

◆ _decompDualColIDs

DataArray< SPxColId > _decompDualColIDs

private

Definition at line 1720 of file soplex.h.

Referenced by SoPlex::_findViolatedRows(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualSlackColCoeff(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompReducedProblem(), and SoPlex::getCompSlackVarCoeff().

◆ _decompDualRowIDs

DataArray< SPxRowId > _decompDualRowIDs

private

Definition at line 1719 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_setComplementaryDualOriginalObjective(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualFixedPrimalVars(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _decompElimPrimalRowIDs

DataArray< SPxRowId > _decompElimPrimalRowIDs

private

Definition at line 1718 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), and SoPlex::getOriginalProblemBasisRowStatus().

◆ _decompFeasVector

DVector _decompFeasVector

private

Definition at line 1704 of file soplex.h.

Referenced by SoPlex::_formDecompReducedProblem(), and SoPlex::_solveDecompositionDualSimplex().

◆ _decompFixedVarDualIDs

DataArray< SPxColId > _decompFixedVarDualIDs

private

Definition at line 1721 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_removeComplementaryDualFixedPrimalVars(), and SoPlex::_updateComplementaryDualFixedPrimalVars().

◆ _decompLP

SPxLPReal* _decompLP

private

Definition at line 1564 of file soplex.h.

Referenced by SoPlex::_computeReducedProbObjCoeff(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_formDecompReducedProblem(), SoPlex::_getCompatibleBoundCons(), SoPlex::_getCompatibleColumns(), and SoPlex::_solveDecompositionDualSimplex().

◆ _decompPrimalColIDs

DataArray< SPxColId > _decompPrimalColIDs

private

Definition at line 1717 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_setComplementaryPrimalOriginalObjective(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryPrimalFixedPrimalVars(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _decompPrimalRowIDs

DataArray< SPxRowId > _decompPrimalRowIDs

private

Definition at line 1716 of file soplex.h.

Referenced by SoPlex::_findViolatedRows(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualSlackColCoeff(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), SoPlex::_updateDecompReducedProblem(), SoPlex::getCompSlackVarCoeff(), and SoPlex::getOriginalProblemBasisRowStatus().

◆ _decompReducedProbColIDs

DataArray< SPxColId > _decompReducedProbColIDs

private

Definition at line 1715 of file soplex.h.

Referenced by SoPlex::_getZeroDualMultiplierIndices(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _decompReducedProbColRowIDs

DataArray< SPxRowId > _decompReducedProbColRowIDs

private

Definition at line 1714 of file soplex.h.

Referenced by SoPlex::_formDecompReducedProblem(), SoPlex::_getCompatibleBoundCons(), SoPlex::_getCompatibleColumns(), SoPlex::_identifyComplementaryDualFixedPrimalVars(), SoPlex::_identifyComplementaryPrimalFixedPrimalVars(), SoPlex::_updateComplementaryDualFixedPrimalVars(), SoPlex::getOriginalProblemBasisColStatus(), and SoPlex::getOrigVarFixedDirection().

◆ _decompReducedProbCols

bool* _decompReducedProbCols

private

Definition at line 1709 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_getZeroDualMultiplierIndices(), and SoPlex::_solveDecompositionDualSimplex().

◆ _decompReducedProbRowIDs

DataArray< SPxRowId > _decompReducedProbRowIDs

private

Definition at line 1713 of file soplex.h.

Referenced by SoPlex::_getCompatibleColumns(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), SoPlex::_updateDecompReducedProblem(), SoPlex::_updateDecompReducedProblemViol(), and SoPlex::getOriginalProblemBasisRowStatus().

◆ _decompReducedProbRows

bool* _decompReducedProbRows

private

Definition at line 1708 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_findViolatedRows(), SoPlex::_getCompatibleColumns(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualSlackColCoeff(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), SoPlex::_updateDecompReducedProblem(), SoPlex::_updateDecompReducedProblemViol(), and SoPlex::getOriginalProblemBasisRowStatus().

◆ _decompRowStatus

int* _decompRowStatus

private

Definition at line 1710 of file soplex.h.

◆ _decompTransBasis

SPxBasis _decompTransBasis

private

Definition at line 1701 of file soplex.h.

Referenced by SoPlex::_checkOriginalProblemOptimality(), and SoPlex::_formDecompReducedProblem().

◆ _decompVarBoundDualIDs

DataArray< SPxColId > _decompVarBoundDualIDs

private

Definition at line 1722 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_removeComplementaryDualFixedPrimalVars(), and SoPlex::_updateComplementaryDualFixedPrimalVars().

◆ _decompViolatedBounds

int* _decompViolatedBounds

private

Definition at line 1732 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_solveDecompositionDualSimplex(), and SoPlex::getDecompBoundViolation().

◆ _decompViolatedRows

int* _decompViolatedRows

private

Definition at line 1733 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateDecompReducedProblemViol(), and SoPlex::getDecompRowViolation().

◆ _feasLhs

DVectorRational _feasLhs

private

Definition at line 1598 of file soplex.h.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_transformFeasibility(), and SoPlex::_untransformFeasibility().

◆ _feasLower

DVectorRational _feasLower

private

Definition at line 1600 of file soplex.h.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_transformFeasibility(), and SoPlex::_untransformFeasibility().

◆ _feasObj

DVectorRational _feasObj

private

Definition at line 1597 of file soplex.h.

Referenced by SoPlex::_transformFeasibility(), and SoPlex::_untransformFeasibility().

◆ _feasRhs

DVectorRational _feasRhs

private

Definition at line 1599 of file soplex.h.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_transformFeasibility(), and SoPlex::_untransformFeasibility().

◆ _feasUpper

DVectorRational _feasUpper

private

Definition at line 1601 of file soplex.h.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_transformFeasibility(), and SoPlex::_untransformFeasibility().

◆ _fixedOrigVars

int* _fixedOrigVars

private

Definition at line 1736 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_removeComplementaryDualFixedPrimalVars(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualFixedPrimalVars(), SoPlex::_updateComplementaryPrimalFixedPrimalVars(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _hasBasis

bool _hasBasis

private

Definition at line 1793 of file soplex.h.

◆ _hasSolRational

bool _hasSolRational

private

Definition at line 1795 of file soplex.h.

Referenced by SoPlex::_invalidateSolution(), SoPlex::_optimizeRational(), SoPlex::_restoreLPReal(), SoPlex::_syncRationalSolution(), SoPlex::_syncRealSolution(), SoPlex::hasDual(), SoPlex::hasDualFarkas(), SoPlex::hasPrimal(), SoPlex::hasPrimalRay(), and SoPlex::operator=().

◆ _hasSolReal

bool _hasSolReal

private

Definition at line 1794 of file soplex.h.

Referenced by SoPlex::_checkOriginalProblemOptimality(), SoPlex::_invalidateSolution(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_syncRationalSolution(), SoPlex::_syncRealSolution(), SoPlex::_verifySolutionReal(), SoPlex::hasDual(), SoPlex::hasDualFarkas(), SoPlex::hasPrimal(), SoPlex::hasPrimalRay(), and SoPlex::operator=().

◆ _isRealLPLoaded

bool _isRealLPLoaded

private

Definition at line 1569 of file soplex.h.

◆ _isRealLPScaled

bool _isRealLPScaled

private

Definition at line 1571 of file soplex.h.

Referenced by SoPlex::_disableSimplifierAndScaler(), SoPlex::_evaluateSolutionReal(), SoPlex::_optimizeReal(), SoPlex::_preprocessAndSolveReal(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_unscaleSolutionReal(), SoPlex::_verifySolutionReal(), SoPlex::operator=(), and SoPlex::SoPlex().

◆ _lastSolveMode

int _lastSolveMode

private

Definition at line 1784 of file soplex.h.

Referenced by SoPlex::_optimizeRational(), SoPlex::_optimizeReal(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::operator=(), SoPlex::printSolutionStatistics(), and SoPlex::SoPlex().

◆ _manualLhs

DVectorReal _manualLhs

private

Definition at line 1576 of file soplex.h.

Referenced by SoPlex::_restoreLPReal(), and SoPlex::_storeLPReal().

◆ _manualLower

DVectorReal _manualLower

private

Definition at line 1574 of file soplex.h.

Referenced by SoPlex::_restoreLPReal(), and SoPlex::_storeLPReal().

◆ _manualObj

DVectorReal _manualObj

private

Definition at line 1578 of file soplex.h.

Referenced by SoPlex::_restoreLPReal(), and SoPlex::_storeLPReal().

◆ _manualRealLP

SPxLPReal _manualRealLP

private

Definition at line 1579 of file soplex.h.

Referenced by SoPlex::_restoreLPReal(), and SoPlex::_storeLPReal().

◆ _manualRhs

DVectorReal _manualRhs

private

Definition at line 1577 of file soplex.h.

Referenced by SoPlex::_restoreLPReal(), and SoPlex::_storeLPReal().

◆ _manualUpper

DVectorReal _manualUpper

private

Definition at line 1575 of file soplex.h.

Referenced by SoPlex::_restoreLPReal(), and SoPlex::_storeLPReal().

◆ _modLhs

DVectorRational _modLhs

private

Definition at line 1604 of file soplex.h.

Referenced by SoPlex::_performOptIRStable().

◆ _modLower

DVectorRational _modLower

private

Definition at line 1602 of file soplex.h.

Referenced by SoPlex::_performOptIRStable().

◆ _modObj

DVectorRational _modObj

private

Definition at line 1606 of file soplex.h.

Referenced by SoPlex::_performOptIRStable().

◆ _modRhs

DVectorRational _modRhs

private

Definition at line 1605 of file soplex.h.

Referenced by SoPlex::_performOptIRStable().

◆ _modUpper

DVectorRational _modUpper

private

Definition at line 1603 of file soplex.h.

Referenced by SoPlex::_performOptIRStable().

◆ _nCompPrimalCols

int _nCompPrimalCols

private

Definition at line 1744 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), and SoPlex::_updateComplementaryPrimalFixedPrimalVars().

◆ _nCompPrimalRows

int _nCompPrimalRows

private

Definition at line 1743 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), and SoPlex::_updateDecompComplementaryPrimalProblem().

◆ _nDecompViolBounds

int _nDecompViolBounds

private

Definition at line 1730 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_solveDecompositionDualSimplex(), and SoPlex::getDecompBoundViolation().

◆ _nDecompViolRows

int _nDecompViolRows

private

Definition at line 1731 of file soplex.h.

Referenced by SoPlex::_createDecompReducedAndComplementaryProblems(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateDecompReducedProblemViol(), and SoPlex::getDecompRowViolation().

◆ _nDualCols

int _nDualCols

private

Definition at line 1742 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualSlackColCoeff(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _nDualRows

int _nDualRows

private

Definition at line 1741 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_solveDecompositionDualSimplex(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _nElimPrimalRows

int _nElimPrimalRows

private

Definition at line 1740 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), and SoPlex::getOriginalProblemBasisRowStatus().

◆ _nPrimalCols

int _nPrimalCols

private

Definition at line 1739 of file soplex.h.

Referenced by SoPlex::_formDecompComplementaryProblem(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualFixedPrimalVars(), and SoPlex::_updateDecompComplementaryDualProblem().

◆ _nPrimalRows

int _nPrimalRows

private

Definition at line 1738 of file soplex.h.

Referenced by SoPlex::_findViolatedRows(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateComplementaryDualSlackColCoeff(), SoPlex::_updateDecompComplementaryDualProblem(), SoPlex::_updateDecompComplementaryPrimalProblem(), SoPlex::_updateDecompReducedProblem(), SoPlex::_updateDecompReducedProblemViol(), and SoPlex::getOriginalProblemBasisRowStatus().

◆ _optimizeCalls

int _optimizeCalls

private

Definition at line 1802 of file soplex.h.

Referenced by SoPlex::_optimizeReal(), SoPlex::_reapplyPersistentScaling(), and SoPlex::SoPlex().

◆ _pricerAuto

SPxAutoPR _pricerAuto

private

Definition at line 1552 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _pricerDantzig

SPxDantzigPR _pricerDantzig

private

Definition at line 1553 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _pricerDevex

SPxDevexPR _pricerDevex

private

Definition at line 1555 of file soplex.h.

Referenced by SoPlex::_solveRealStable(), SoPlex::operator=(), and SoPlex::setIntParam().

◆ _pricerParMult

SPxParMultPR _pricerParMult

private

Definition at line 1554 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _pricerQuickSteep

SPxSteepPR _pricerQuickSteep

private

Definition at line 1556 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _pricerSteep

SPxSteepExPR _pricerSteep

private

Definition at line 1557 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _primalDualDiff

DSVectorRational _primalDualDiff

private

Definition at line 1607 of file soplex.h.

Referenced by SoPlex::_performOptIRStable().

◆ _rationalFeastol

Rational _rationalFeastol

private

Definition at line 1531 of file soplex.h.

Referenced by SoPlex::_performFeasIRStable(), SoPlex::_performOptIRStable(), SoPlex::_performUnboundedIRStable(), SoPlex::_untransformUnbounded(), SoPlex::getDualViolationRational(), and SoPlex::setRealParam().

◆ _rationalLP

SPxLPRational* _rationalLP

private

Definition at line 1587 of file soplex.h.

◆ _rationalLUSolver

SLUFactorRational _rationalLUSolver

private

Definition at line 1588 of file soplex.h.

Referenced by SoPlex::_addColReal(), SoPlex::_addColsReal(), SoPlex::_addRowReal(), SoPlex::_addRowsReal(), SoPlex::_changeColReal(), SoPlex::_changeElementReal(), SoPlex::_changeRowReal(), SoPlex::_computeBasisInverseRational(), SoPlex::_factorizeColumnRational(), SoPlex::_isConsistent(), SoPlex::_lift(), SoPlex::_performOptIRStable(), SoPlex::_project(), SoPlex::_removeColReal(), SoPlex::_removeColsReal(), SoPlex::_removeRowReal(), SoPlex::_removeRowsReal(), SoPlex::_solveRealForRational(), SoPlex::_solveRealLPAndRecordStatistics(), SoPlex::_syncLPReal(), SoPlex::_transformEquality(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformEquality(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::clearBasis(), SoPlex::clearLPRational(), SoPlex::clearLPReal(), SoPlex::computeBasisInverseRational(), SoPlex::getBasisIndRational(), SoPlex::getBasisInverseColRational(), SoPlex::getBasisInverseRowRational(), SoPlex::getBasisInverseTimesVecRational(), SoPlex::operator=(), and SoPlex::setBasis().

◆ _rationalLUSolverBind

DataArray<int> _rationalLUSolverBind

private

Definition at line 1589 of file soplex.h.

Referenced by SoPlex::_computeBasisInverseRational(), SoPlex::_factorizeColumnRational(), SoPlex::_isConsistent(), SoPlex::computeBasisInverseRational(), and SoPlex::getBasisIndRational().

◆ _rationalMaxscaleincr

Rational _rationalMaxscaleincr

private

Definition at line 1533 of file soplex.h.

Referenced by SoPlex::_performOptIRStable(), and SoPlex::setRealParam().

◆ _rationalNegInfty

Rational _rationalNegInfty

private

Definition at line 1530 of file soplex.h.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_lift(), SoPlex::_performOptIRStable(), SoPlex::_rangeTypeRational(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::areLPsInSync(), SoPlex::objValueRational(), and SoPlex::setRealParam().

◆ _rationalNegone

Rational _rationalNegone

private

Definition at line 1806 of file soplex.h.

Referenced by SoPlex::_transformFeasibility(), and SoPlex::operator=().

◆ _rationalOpttol

Rational _rationalOpttol

private

Definition at line 1532 of file soplex.h.

Referenced by SoPlex::_performOptIRStable(), SoPlex::_project(), and SoPlex::setRealParam().

◆ _rationalPosInfty

Rational _rationalPosInfty

private

Definition at line 1529 of file soplex.h.

Referenced by SoPlex::_computeInfeasBox(), SoPlex::_lift(), SoPlex::_performOptIRStable(), SoPlex::_rangeTypeRational(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::areLPsInSync(), SoPlex::objValueRational(), and SoPlex::setRealParam().

◆ _rationalPosone

Rational _rationalPosone

private

Definition at line 1805 of file soplex.h.

Referenced by SoPlex::_performFeasIRStable(), SoPlex::_performOptIRStable(), SoPlex::_performUnboundedIRStable(), SoPlex::_transformFeasibility(), SoPlex::_untransformUnbounded(), and SoPlex::operator=().

◆ _rationalZero

Rational _rationalZero

private

Definition at line 1807 of file soplex.h.

Referenced by SoPlex::_transformEquality(), SoPlex::objValueRational(), and SoPlex::operator=().

◆ _ratiotesterBoundFlipping

SPxBoundFlippingRT _ratiotesterBoundFlipping

private

Definition at line 1561 of file soplex.h.

Referenced by SoPlex::operator=(), SoPlex::setBoolParam(), and SoPlex::setIntParam().

◆ _ratiotesterFast

SPxFastRT _ratiotesterFast

private

Definition at line 1560 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _ratiotesterHarris

SPxHarrisRT _ratiotesterHarris

private

Definition at line 1559 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _ratiotesterTextbook

SPxDefaultRT _ratiotesterTextbook

private

Definition at line 1558 of file soplex.h.

Referenced by SoPlex::_solveRealStable(), SoPlex::operator=(), and SoPlex::setIntParam().

◆ _realLP

SPxLPReal* _realLP

private

Definition at line 1563 of file soplex.h.

◆ _rowNames

NameSet* _rowNames

private

Definition at line 1748 of file soplex.h.

Referenced by SoPlex::readFile().

◆ _rowTypes

DataArray< RangeType > _rowTypes

private

Definition at line 1635 of file soplex.h.

Referenced by SoPlex::_completeRangeTypesRational(), SoPlex::_factorizeColumnRational(), SoPlex::_isConsistent(), SoPlex::_performOptIRStable(), SoPlex::_recomputeRangeTypesRational(), SoPlex::_recomputeRangeTypesReal(), SoPlex::_reconstructSolutionRational(), SoPlex::_transformEquality(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformEquality(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::changeLhsRational(), SoPlex::changeLhsReal(), SoPlex::changeRangeRational(), SoPlex::changeRangeReal(), SoPlex::changeRhsRational(), SoPlex::changeRhsReal(), SoPlex::changeRowRational(), SoPlex::changeRowReal(), SoPlex::clearLPRational(), SoPlex::clearLPReal(), SoPlex::getDualViolationRational(), SoPlex::readBasisFile(), SoPlex::removeRowRational(), SoPlex::removeRowReal(), SoPlex::removeRowsRational(), SoPlex::removeRowsReal(), and SoPlex::writeBasisFile().

◆ _scaler

◆ _scalerBiequi

SPxEquiliSC _scalerBiequi

private

Definition at line 1545 of file soplex.h.

Referenced by SoPlex::_enableSimplifierAndScaler(), SoPlex::operator=(), SoPlex::setIntParam(), and SoPlex::SoPlex().

◆ _scalerGeo1

SPxGeometSC _scalerGeo1

private

Definition at line 1546 of file soplex.h.

Referenced by SoPlex::_enableSimplifierAndScaler(), SoPlex::operator=(), SoPlex::setIntParam(), and SoPlex::SoPlex().

◆ _scalerGeo8

SPxGeometSC _scalerGeo8

private

Definition at line 1547 of file soplex.h.

Referenced by SoPlex::_enableSimplifierAndScaler(), SoPlex::operator=(), SoPlex::setIntParam(), and SoPlex::SoPlex().

◆ _scalerLeastsq

SPxLeastSqSC _scalerLeastsq

private

Definition at line 1548 of file soplex.h.

Referenced by SoPlex::_enableSimplifierAndScaler(), SoPlex::operator=(), SoPlex::setIntParam(), and SoPlex::SoPlex().

◆ _scalerUniequi

SPxEquiliSC _scalerUniequi

private

Definition at line 1544 of file soplex.h.

Referenced by SoPlex::_enableSimplifierAndScaler(), SoPlex::operator=(), SoPlex::setIntParam(), and SoPlex::SoPlex().

◆ _simplifier

SPxSimplifier* _simplifier

private

Definition at line 1565 of file soplex.h.

Referenced by SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_disableSimplifierAndScaler(), SoPlex::_enableSimplifierAndScaler(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_preprocessAndSolveReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveRealForRational(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::getSimplifierName(), and SoPlex::setIntParam().

◆ _simplifierMainSM

SPxMainSM _simplifierMainSM

private

Definition at line 1543 of file soplex.h.

Referenced by SoPlex::_enableSimplifierAndScaler(), SoPlex::operator=(), and SoPlex::setIntParam().

◆ _slackCols

LPColSetRational _slackCols

private

Definition at line 1591 of file soplex.h.

Referenced by SoPlex::_performOptIRStable(), SoPlex::_transformEquality(), and SoPlex::_untransformEquality().

◆ _slufactor

SLUFactor _slufactor

private

Definition at line 1542 of file soplex.h.

Referenced by SoPlex::_solveDecompositionDualSimplex(), SoPlex::_solveRealLPAndRecordStatistics(), SoPlex::_solveRealStable(), SoPlex::operator=(), SoPlex::setIntParam(), and SoPlex::SoPlex().

◆ _solRational

SolRational _solRational

private

Definition at line 1790 of file soplex.h.

◆ _solReal

SolReal _solReal

private

Definition at line 1789 of file soplex.h.

Referenced by SoPlex::_checkOriginalProblemOptimality(), SoPlex::_invalidateSolution(), SoPlex::_optimizeReal(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_syncRationalSolution(), SoPlex::_syncRealSolution(), SoPlex::_unscaleSolutionReal(), SoPlex::_verifySolutionReal(), SoPlex::getBoundViolationReal(), SoPlex::getDecompBoundViolation(), SoPlex::getDecompRowViolation(), SoPlex::getDualFarkasReal(), SoPlex::getDualReal(), SoPlex::getDualViolationReal(), SoPlex::getPrimalRayReal(), SoPlex::getPrimalReal(), SoPlex::getRedCostReal(), SoPlex::getRedCostViolationReal(), SoPlex::getRowViolationReal(), SoPlex::getSlacksReal(), SoPlex::hasDual(), SoPlex::hasDualFarkas(), SoPlex::hasPrimal(), SoPlex::hasPrimalRay(), SoPlex::objValueReal(), and SoPlex::operator=().

◆ _solver

SPxSolver _solver

private

Definition at line 1541 of file soplex.h.

◆ _starter

SPxStarter* _starter

private

Definition at line 1567 of file soplex.h.

Referenced by SoPlex::getStarterName(), and SoPlex::setIntParam().

◆ _starterSum

SPxSumST _starterSum

private

Definition at line 1550 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _starterVector

SPxVectorST _starterVector

private

Definition at line 1551 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _starterWeight

SPxWeightST _starterWeight

private

Definition at line 1549 of file soplex.h.

Referenced by SoPlex::operator=(), and SoPlex::setIntParam().

◆ _statistics

Statistics* _statistics

private

statistics since last call to solveReal() or solveRational()

Definition at line 1516 of file soplex.h.

Referenced by SoPlex::_checkOriginalProblemOptimality(), SoPlex::_computeBasisInverseRational(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_factorizeColumnRational(), SoPlex::_isConsistent(), SoPlex::_isSolveStopped(), SoPlex::_lift(), SoPlex::_optimizeRational(), SoPlex::_optimizeReal(), SoPlex::_performFeasIRStable(), SoPlex::_performOptIRStable(), SoPlex::_performUnboundedIRStable(), SoPlex::_preprocessAndSolveReal(), SoPlex::_project(), SoPlex::_readFileRational(), SoPlex::_readFileReal(), SoPlex::_reconstructSolutionRational(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_solveRealForRational(), SoPlex::_solveRealLPAndRecordStatistics(), SoPlex::_syncLPRational(), SoPlex::_syncLPReal(), SoPlex::_transformEquality(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SoPlex::_untransformEquality(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::decompTerminate(), SoPlex::loadSettingsFile(), SoPlex::numIterations(), SoPlex::operator=(), SoPlex::optimize(), SoPlex::printDecompDisplayLine(), SoPlex::printShortStatistics(), SoPlex::printSolvingStatistics(), SoPlex::readBasisFile(), SoPlex::solveTime(), SoPlex::SoPlex(), SoPlex::statisticString(), and SoPlex::~SoPlex().

◆ _status

SPxSolver::Status _status

private

Definition at line 1783 of file soplex.h.

Referenced by SoPlex::_checkBasisScaling(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_evaluateSolutionReal(), SoPlex::_invalidateSolution(), SoPlex::_optimizeRational(), SoPlex::_readFileRational(), SoPlex::_readFileReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveRealLPAndRecordStatistics(), SoPlex::clearBasis(), SoPlex::operator=(), SoPlex::printShortStatistics(), SoPlex::printStatistics(), and SoPlex::status().

◆ _storedBasis

bool _storedBasis

private

Definition at line 1611 of file soplex.h.

Referenced by SoPlex::_optimizeRational(), SoPlex::_restoreBasis(), and SoPlex::_storeBasis().

◆ _storedBasisStatusCols

DataArray< SPxSolver::VarStatus > _storedBasisStatusCols

private

Definition at line 1609 of file soplex.h.

Referenced by SoPlex::_restoreBasis(), and SoPlex::_storeBasis().

◆ _storedBasisStatusRows

DataArray< SPxSolver::VarStatus > _storedBasisStatusRows

private

Definition at line 1608 of file soplex.h.

Referenced by SoPlex::_restoreBasis(), and SoPlex::_storeBasis().

◆ _tauColVector

DSVectorRational _tauColVector

private

Definition at line 1596 of file soplex.h.

Referenced by SoPlex::_transformFeasibility().

◆ _transformedObj

DVector _transformedObj

private

Definition at line 1703 of file soplex.h.

Referenced by SoPlex::_computeReducedProbObjCoeff().

◆ _transformedRows

LPRowSet _transformedRows

private

Definition at line 1705 of file soplex.h.

Referenced by SoPlex::_getCompatibleBoundCons(), SoPlex::_getCompatibleColumns(), SoPlex::_updateDecompReducedProblem(), and SoPlex::_updateDecompReducedProblemViol().

◆ _unboundedLhs

DVectorRational _unboundedLhs

private

Definition at line 1594 of file soplex.h.

Referenced by SoPlex::_transformUnbounded(), and SoPlex::_untransformUnbounded().

◆ _unboundedLower

DVectorRational _unboundedLower

private

Definition at line 1592 of file soplex.h.

Referenced by SoPlex::_transformUnbounded(), and SoPlex::_untransformUnbounded().

◆ _unboundedRhs

DVectorRational _unboundedRhs

private

Definition at line 1595 of file soplex.h.

Referenced by SoPlex::_transformUnbounded(), and SoPlex::_untransformUnbounded().

◆ _unboundedUpper

DVectorRational _unboundedUpper

private

Definition at line 1593 of file soplex.h.

Referenced by SoPlex::_transformUnbounded(), and SoPlex::_untransformUnbounded().

◆ _unitMatrixRational

DataArray< UnitVectorRational* > _unitMatrixRational

private

Definition at line 1610 of file soplex.h.

Referenced by SoPlex::_unitVectorRational(), and SoPlex::~SoPlex().

◆ _unscaleCalls

int _unscaleCalls

private

Definition at line 1803 of file soplex.h.

Referenced by SoPlex::_optimizeReal(), SoPlex::_reapplyPersistentScaling(), SoPlex::_verifySolutionReal(), and SoPlex::SoPlex().

◆ _workSol

SolRational _workSol

private

Definition at line 1791 of file soplex.h.

Referenced by SoPlex::_factorizeColumnRational(), and SoPlex::_reconstructSolutionRational().

◆ maxAbsNonzero

Real maxAbsNonzero

private

Definition at line 1762 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ minAbsNonzero

Real minAbsNonzero

private

Definition at line 1761 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ numCompProbIter

int numCompProbIter

private

Definition at line 1755 of file soplex.h.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ numDecompIter

int numDecompIter

private

Definition at line 1753 of file soplex.h.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ numIncludedRows

int numIncludedRows

private

Definition at line 1752 of file soplex.h.

Referenced by SoPlex::_findViolatedRows(), SoPlex::_formDecompReducedProblem(), SoPlex::_getCompatibleColumns(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_updateDecompReducedProblem(), and SoPlex::printDecompDisplayLine().

◆ numNonzeros

int numNonzeros

private

Definition at line 1760 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ numProbCols

int numProbCols

private

Definition at line 1759 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ numProbRows

int numProbRows

private

Definition at line 1758 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ numRedProbIter

int numRedProbIter

private

Definition at line 1754 of file soplex.h.

Referenced by SoPlex::_solveDecompositionDualSimplex().

◆ origCountBoxed

int origCountBoxed

private

Definition at line 1766 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountFreeCol

int origCountFreeCol

private

Definition at line 1767 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountFreeRow

int origCountFreeRow

private

Definition at line 1772 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountLhs

int origCountLhs

private

Definition at line 1769 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountLower

int origCountLower

private

Definition at line 1764 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountRanged

int origCountRanged

private

Definition at line 1771 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountRhs

int origCountRhs

private

Definition at line 1770 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ origCountUpper

int origCountUpper

private

Definition at line 1765 of file soplex.h.

Referenced by SoPlex::getOriginalProblemStatistics(), and SoPlex::printOriginalProblemStatistics().

◆ spxout

SPxOut spxout

mutable

Definition at line 1416 of file soplex.h.

SoPlex

Classes

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ BoolParam

◆ decompStatus

◆ DualSign

◆ IntParam

◆ RangeType

◆ RealParam

Constructor & Destructor Documentation

◆ SoPlex() [1/2]

◆ SoPlex() [2/2]

◆ ~SoPlex()

Member Function Documentation

◆ _addColReal() [1/2]

◆ _addColReal() [2/2]

◆ _addColsReal()

◆ _addRowReal() [1/2]

◆ _addRowReal() [2/2]

◆ _addRowsReal()

◆ _changeBoundsReal() [1/2]

◆ _changeBoundsReal() [2/2]

◆ _changeColReal()

◆ _changeElementReal()

◆ _changeLhsReal() [1/2]

◆ _changeLhsReal() [2/2]

◆ _changeLowerReal() [1/2]

◆ _changeLowerReal() [2/2]

◆ _changeRangeReal() [1/2]

◆ _changeRangeReal() [2/2]

◆ _changeRhsReal() [1/2]

◆ _changeRhsReal() [2/2]

◆ _changeRowReal()

◆ _changeUpperReal() [1/2]

◆ _changeUpperReal() [2/2]

◆ _checkBasisScaling()

◆ _checkOriginalProblemOptimality()

◆ _checkScaling()

◆ _completeRangeTypesRational()

◆ _computeBasisInverseRational()

◆ _computeInfeasBox()

◆ _computeReducedProbObjCoeff()

◆ _createDecompReducedAndComplementaryProblems()

◆ _decompResolveWithoutPreprocessing()

◆ _decompSimplifyAndSolve()

◆ _deleteAndUpdateRowsComplementaryProblem()

◆ _disableSimplifierAndScaler()

◆ _enableSimplifierAndScaler()

◆ _ensureDSVectorRationalMemory()

◆ _ensureRationalLP()

◆ _ensureRealLPLoaded()

◆ _evaluateSolutionDecomp()

◆ _evaluateSolutionReal()

◆ _factorizeColumnRational()

◆ _findViolatedRows()

◆ _formDecompComplementaryProblem()

◆ _formDecompReducedProblem()

◆ _getCompatibleBoundCons()

◆ _getCompatibleColumns()