soplex_interface.cpp File Reference

#include "soplex.h"
#include "soplex_interface.h"
#include <iostream>

Go to the source code of this file.

Functions
void *	SoPlex_create ()
void	SoPlex_free (void *soplex)
int	SoPlex_readInstanceFile (void *soplex, const char *filename)
int	SoPlex_readBasisFile (void *soplex, const char *filename)
int	SoPlex_readSettingsFile (void *soplex, const char *filename)
void	SoPlex_clearLPReal (void *soplex)
int	SoPlex_numRows (void *soplex)
int	SoPlex_numCols (void *soplex)
void	SoPlex_setRational (void *soplex)
void	SoPlex_setBoolParam (void *soplex, int paramcode, int paramvalue)
void	SoPlex_setIntParam (void *soplex, int paramcode, int paramvalue)
void	SoPlex_setRealParam (void *soplex, int paramcode, double paramvalue)
int	SoPlex_getIntParam (void *soplex, int paramcode)
void	SoPlex_addColReal (void *soplex, double *colentries, int colsize, int nnonzeros, double objval, double lb, double ub)
void	SoPlex_removeColReal (void *soplex, int colidx)
void	SoPlex_addColRational (void *soplex, long *colnums, long *coldenoms, int colsize, int nnonzeros, long objvalnum, long objvaldenom, long lbnum, long lbdenom, long ubnum, long ubdenom)
void	SoPlex_addRowReal (void *soplex, double *rowentries, int rowsize, int nnonzeros, double lb, double ub)
void	SoPlex_removeRowReal (void *soplex, int rowidx)
void	SoPlex_addRowRational (void *soplex, long *rownums, long *rowdenoms, int rowsize, int nnonzeros, long lbnum, long lbdenom, long ubnum, long ubdenom)
void	SoPlex_getPrimalReal (void *soplex, double *primal, int dim)
char *	SoPlex_getPrimalRationalString (void *soplex, int dim)
void	SoPlex_getDualReal (void *soplex, double *dual, int dim)
void	SoPlex_getRedCostReal (void *soplex, double *rc, int dim)
int	SoPlex_optimize (void *soplex)
int	SoPlex_getStatus (void *soplex)
double	SoPlex_getSolvingTime (void *soplex)
int	SoPlex_getNumIterations (void *soplex)
void	SoPlex_changeObjReal (void *soplex, double *obj, int dim)
void	SoPlex_changeObjRational (void *soplex, long *objnums, long *objdenoms, int dim)
void	SoPlex_changeLhsReal (void *soplex, double *lhs, int dim)
void	SoPlex_changeRowLhsReal (void *soplex, int rowidx, double lhs)
void	SoPlex_changeLhsRational (void *soplex, long *lhsnums, long *lhsdenoms, int dim)
void	SoPlex_changeRhsReal (void *soplex, double *rhs, int dim)
void	SoPlex_changeRowRhsReal (void *soplex, int rowidx, double rhs)
void	SoPlex_changeRangeReal (void *soplex, double *lhs, double *rhs, int dim)
void	SoPlex_changeRowRangeReal (void *soplex, int rowidx, double lhs, double rhs)
void	SoPlex_changeRhsRational (void *soplex, long *rhsnums, long *rhsdenoms, int dim)
void	SoPlex_writeFileReal (void *soplex, char *filename)
double	SoPlex_objValueReal (void *soplex)
char *	SoPlex_objValueRationalString (void *soplex)
void	SoPlex_changeBoundsReal (void *soplex, double *lb, double *ub, int dim)
void	SoPlex_changeVarBoundsReal (void *soplex, int colidx, double lb, double ub)
void	SoPlex_changeVarBoundsRational (void *soplex, int colidx, long lbnum, long lbdenom, long ubnum, long ubdenom)
void	SoPlex_changeLowerReal (void *soplex, double *lb, int dim)
void	SoPlex_changeVarLowerReal (void *soplex, int colidx, double lb)
void	SoPlex_getLowerReal (void *soplex, double *lb, int dim)
void	SoPlex_getObjReal (void *soplex, double *obj, int dim)
void	SoPlex_changeUpperReal (void *soplex, double *ub, int dim)
void	SoPlex_changeVarUpperReal (void *soplex, int colidx, double ub)
void	SoPlex_getUpperReal (void *soplex, double *ub, int dim)
int	SoPlex_basisRowStatus (void *soplex, int rowidx)
int	SoPlex_basisColStatus (void *soplex, int colidx)
void	SoPlex_getRowVectorReal (void *soplex, int i, int *nnonzeros, long *indices, double *coefs)
void	SoPlex_getRowVectorRational (void *soplex, int i, int *nnonzeros, long *indices, long *coefsnum, long *coefsdenom)
void	SoPlex_getRowBoundsReal (void *soplex, int i, double *lb, double *ub)
void	SoPlex_getRowBoundsRational (void *soplex, int i, long *lbnum, long *lbdenom, long *ubnum, long *ubdenom)

Function Documentation

SoPlex_addColRational()

void SoPlex_addColRational	(	void *	soplex,
		long *	colnums,
		long *	coldenoms,
		int	colsize,
		int	nnonzeros,
		long	objvalnum,
		long	objvaldenom,
		long	lbnum,
		long	lbdenom,
		long	ubnum,
		long	ubdenom
	)

adds a single rational column

Definition at line 132 of file soplex_interface.cpp.

References DSVectorBase< R >::add().

SoPlex_addColReal()

void SoPlex_addColReal	(	void *	soplex,
		double *	colentries,
		int	colsize,
		int	nnonzeros,
		double	objval,
		double	lb,
		double	ub
	)

adds a single (floating point) column

Definition at line 108 of file soplex_interface.cpp.

References DSVectorBase< R >::add().

SoPlex_addRowRational()

void SoPlex_addRowRational	(	void *	soplex,
		long *	rownums,
		long *	rowdenoms,
		int	rowsize,
		int	nnonzeros,
		long	lbnum,
		long	lbdenom,
		long	ubnum,
		long	ubdenom
	)

adds a single rational row

Definition at line 190 of file soplex_interface.cpp.

References DSVectorBase< R >::add().

SoPlex_addRowReal()

void SoPlex_addRowReal	(	void *	soplex,
		double *	rowentries,
		int	rowsize,
		int	nnonzeros,
		double	lb,
		double	ub
	)

adds a single (floating point) row

Definition at line 166 of file soplex_interface.cpp.

References DSVectorBase< R >::add().

SoPlex_basisColStatus()

int SoPlex_basisColStatus	(	void *	soplex,
		int	colidx
	)

returns status of column 0 -> column is set to its upper bound 1 -> column is set to its lower bound 2 -> column is fixed to its identical bounds 3 -> column is free and fixed to zero 4 -> column is basic 5 -> nothing known about basis status

Definition at line 573 of file soplex_interface.cpp.

SoPlex_basisRowStatus()

int SoPlex_basisRowStatus	(	void *	soplex,
		int	rowidx
	)

returns status of row 0 -> row is set to its upper bound 1 -> row is set to its lower bound 2 -> row is fixed to its identical bounds 4 -> row is basic 5 -> nothing known about basis status

Definition at line 558 of file soplex_interface.cpp.

SoPlex_changeBoundsReal()

void SoPlex_changeBoundsReal	(	void *	soplex,
		double *	lb,
		double *	ub,
		int	dim
	)

changes vectors of column bounds to lb and ub

Definition at line 451 of file soplex_interface.cpp.

SoPlex_changeLhsRational()

void SoPlex_changeLhsRational	(	void *	soplex,
		long *	lhsnums,
		long *	lhsdenoms,
		int	dim
	)

changes rational left-hand side vector for constraints to lhs

Definition at line 343 of file soplex_interface.cpp.

SoPlex_changeLhsReal()

void SoPlex_changeLhsReal	(	void *	soplex,
		double *	lhs,
		int	dim
	)

changes left-hand side vector for constraints to lhs

Definition at line 328 of file soplex_interface.cpp.

SoPlex_changeLowerReal()

void SoPlex_changeLowerReal	(	void *	soplex,
		double *	lb,
		int	dim
	)

changes vector of lower bounds to lb

Definition at line 486 of file soplex_interface.cpp.

SoPlex_changeObjRational()

void SoPlex_changeObjRational	(	void *	soplex,
		long *	objnums,
		long *	objdenoms,
		int	dim
	)

changes rational objective function vector to obj

Definition at line 307 of file soplex_interface.cpp.

SoPlex_changeObjReal()

void SoPlex_changeObjReal	(	void *	soplex,
		double *	obj,
		int	dim
	)

changes objective function vector to obj

Definition at line 299 of file soplex_interface.cpp.

SoPlex_changeRangeReal()

void SoPlex_changeRangeReal	(	void *	soplex,
		double *	lhs,
		double *	rhs,
		int	dim
	)

changes both sides for constraints to given lhs and rhs

Definition at line 379 of file soplex_interface.cpp.

SoPlex_changeRhsRational()

void SoPlex_changeRhsRational	(	void *	soplex,
		long *	rhsnums,
		long *	rhsdenoms,
		int	dim
	)

changes rational right-hand side vector for constraints to rhs

Definition at line 395 of file soplex_interface.cpp.

SoPlex_changeRhsReal()

void SoPlex_changeRhsReal	(	void *	soplex,
		double *	rhs,
		int	dim
	)

changes right-hand side vector for constraints to rhs

Definition at line 364 of file soplex_interface.cpp.

SoPlex_changeRowLhsReal()

void SoPlex_changeRowLhsReal	(	void *	soplex,
		int	rowidx,
		double	lhs
	)

changes left-hand side of a row to lhs

Definition at line 336 of file soplex_interface.cpp.

SoPlex_changeRowRangeReal()

void SoPlex_changeRowRangeReal	(	void *	soplex,
		int	rowidx,
		double	lhs,
		double	rhs
	)

changes both sides of a row to given lhs and rhs

Definition at line 388 of file soplex_interface.cpp.

SoPlex_changeRowRhsReal()

void SoPlex_changeRowRhsReal	(	void *	soplex,
		int	rowidx,
		double	rhs
	)

changes right-hand side of a row to rhs

Definition at line 372 of file soplex_interface.cpp.

SoPlex_changeUpperReal()

void SoPlex_changeUpperReal	(	void *	soplex,
		double *	ub,
		int	dim
	)

changes vector of upper bounds to ub

Definition at line 525 of file soplex_interface.cpp.

SoPlex_changeVarBoundsRational()

void SoPlex_changeVarBoundsRational	(	void *	soplex,
		int	colidx,
		long	lbnum,
		long	lbdenom,
		long	ubnum,
		long	ubdenom
	)

changes rational bounds of a column to lbnum/lbdenom and ubnum/ubdenom

Definition at line 467 of file soplex_interface.cpp.

SoPlex_changeVarBoundsReal()

void SoPlex_changeVarBoundsReal	(	void *	soplex,
		int	colidx,
		double	lb,
		double	ub
	)

changes bounds of a column to lb and ub

Definition at line 460 of file soplex_interface.cpp.

SoPlex_changeVarLowerReal()

void SoPlex_changeVarLowerReal	(	void *	soplex,
		int	colidx,
		double	lb
	)

changes lower bound of column to ub

Definition at line 494 of file soplex_interface.cpp.

SoPlex_changeVarUpperReal()

void SoPlex_changeVarUpperReal	(	void *	soplex,
		int	colidx,
		double	ub
	)

changes upper bound of column to ub

Definition at line 533 of file soplex_interface.cpp.

SoPlex_clearLPReal()

void SoPlex_clearLPReal

(

void *

soplex

)

clears the (floating point) LP

Definition at line 43 of file soplex_interface.cpp.

SoPlex_create()

void* SoPlex_create

(

)

creates new SoPlex struct

Definition at line 8 of file soplex_interface.cpp.

SoPlex_free()

void SoPlex_free

(

void *

soplex

)

frees SoPlex struct

Definition at line 15 of file soplex_interface.cpp.

SoPlex_getDualReal()

void SoPlex_getDualReal	(	void *	soplex,
		double *	dual,
		int	dim
	)

gets dual solution

Definition at line 257 of file soplex_interface.cpp.

SoPlex_getIntParam()

int SoPlex_getIntParam	(	void *	soplex,
		int	paramcode
	)

returns value of integer parameter

Definition at line 101 of file soplex_interface.cpp.

SoPlex_getLowerReal()

void SoPlex_getLowerReal	(	void *	soplex,
		double *	lb,
		int	dim
	)

gets lower bound vector of columns into lb

Definition at line 501 of file soplex_interface.cpp.

SoPlex_getNumIterations()

int SoPlex_getNumIterations

(

void *

soplex

)

returns the number of iteration in last call to solve

Definition at line 292 of file soplex_interface.cpp.

SoPlex_getObjReal()

void SoPlex_getObjReal	(	void *	soplex,
		double *	obj,
		int	dim
	)

gets objective vector into obj

Definition at line 513 of file soplex_interface.cpp.

SoPlex_getPrimalRationalString()

char* SoPlex_getPrimalRationalString	(	void *	soplex,
		int	dim
	)

Returns rational primal solution in a char pointer. The caller needs to ensure the char array is freed.

Definition at line 230 of file soplex_interface.cpp.

SoPlex_getPrimalReal()

void SoPlex_getPrimalReal	(	void *	soplex,
		double *	primal,
		int	dim
	)

gets primal solution

Definition at line 221 of file soplex_interface.cpp.

SoPlex_getRedCostReal()

void SoPlex_getRedCostReal	(	void *	soplex,
		double *	rc,
		int	dim
	)

gets reduced cost vector

Definition at line 264 of file soplex_interface.cpp.

SoPlex_getRowBoundsRational()

void SoPlex_getRowBoundsRational	(	void *	soplex,
		int	i,
		long *	lbnum,
		long *	lbdenom,
		long *	ubnum,
		long *	ubdenom
	)

get rational lower and upper bounds of row i

Definition at line 633 of file soplex_interface.cpp.

SoPlex_getRowBoundsReal()

void SoPlex_getRowBoundsReal	(	void *	soplex,
		int	i,
		double *	lb,
		double *	ub
	)

get lower and upper bounds of row i

Definition at line 624 of file soplex_interface.cpp.

SoPlex_getRowVectorRational()

void SoPlex_getRowVectorRational	(	void *	soplex,
		int	i,
		int *	nnonzeros,
		long *	indices,
		long *	coefsnum,
		long *	coefsdenom
	)

get non-zero entries and indices of rational row i

Definition at line 598 of file soplex_interface.cpp.

References SVectorBase< R >::index(), LPRowBase< R >::rowVector(), SVectorBase< R >::size(), and SVectorBase< R >::value().

SoPlex_getRowVectorReal()

void SoPlex_getRowVectorReal	(	void *	soplex,
		int	i,
		int *	nnonzeros,
		long *	indices,
		double *	coefs
	)

get non-zero entries and indices of row i

Definition at line 581 of file soplex_interface.cpp.

References SVectorBase< R >::index(), SVectorBase< R >::size(), and SVectorBase< R >::value().

SoPlex_getSolvingTime()

double SoPlex_getSolvingTime

(

void *

soplex

)

returns the time spent in last call to solve

Definition at line 285 of file soplex_interface.cpp.

SoPlex_getStatus()

int SoPlex_getStatus

(

void *

soplex

)

returns the current solver status

Definition at line 278 of file soplex_interface.cpp.

SoPlex_getUpperReal()

void SoPlex_getUpperReal	(	void *	soplex,
		double *	ub,
		int	dim
	)

gets upper bound vector of columns into ub

Definition at line 540 of file soplex_interface.cpp.

SoPlex_numCols()

int SoPlex_numCols

(

void *

soplex

)

returns number of columns

Definition at line 57 of file soplex_interface.cpp.

SoPlex_numRows()

int SoPlex_numRows

(

void *

soplex

)

returns number of rows

Definition at line 50 of file soplex_interface.cpp.

SoPlex_objValueRationalString()

char* SoPlex_objValueRationalString

(

void *

soplex

)

Returns the rational objective value (as a string) if a primal solution is available. The caller needs to ensure the char array is freed.

Definition at line 432 of file soplex_interface.cpp.

SoPlex_objValueReal()

double SoPlex_objValueReal

(

void *

soplex

)

returns the objective value if a primal solution is available

Definition at line 423 of file soplex_interface.cpp.

SoPlex_optimize()

int SoPlex_optimize

(

void *

soplex

)

optimizes the given LP

Definition at line 271 of file soplex_interface.cpp.

SoPlex_readBasisFile()

int SoPlex_readBasisFile	(	void *	soplex,
		const char *	filename
	)

reads basis information from filename and returns true on success

Definition at line 29 of file soplex_interface.cpp.

SoPlex_readInstanceFile()

int SoPlex_readInstanceFile	(	void *	soplex,
		const char *	filename
	)

reads LP file in LP or MPS format according to READMODE parameter; returns true on success

Definition at line 22 of file soplex_interface.cpp.

SoPlex_readSettingsFile()

int SoPlex_readSettingsFile	(	void *	soplex,
		const char *	filename
	)

reads settings from filename and returns true on success

Definition at line 36 of file soplex_interface.cpp.

SoPlex_removeColReal()

void SoPlex_removeColReal	(	void *	soplex,
		int	colidx
	)

removes a single (floating point) column

Definition at line 125 of file soplex_interface.cpp.

SoPlex_removeRowReal()

void SoPlex_removeRowReal	(	void *	soplex,
		int	rowidx
	)

removes a single (floating point) row

Definition at line 183 of file soplex_interface.cpp.

SoPlex_setBoolParam()

void SoPlex_setBoolParam	(	void *	soplex,
		int	paramcode,
		int	paramvalue
	)

sets boolean parameter value

Definition at line 80 of file soplex_interface.cpp.

SoPlex_setIntParam()

void SoPlex_setIntParam	(	void *	soplex,
		int	paramcode,
		int	paramvalue
	)

sets integer parameter value

Definition at line 87 of file soplex_interface.cpp.

SoPlex_setRational()

void SoPlex_setRational

(

void *

soplex

)

enables rational solving mode

Definition at line 64 of file soplex_interface.cpp.

References SoPlexBase< R >::CHECKMODE, SoPlexBase< R >::CHECKMODE_RATIONAL, SoPlexBase< R >::FEASTOL, SoPlexBase< R >::OPTTOL, SoPlexBase< R >::READMODE, SoPlexBase< R >::READMODE_RATIONAL, SoPlexBase< R >::SOLVEMODE, SoPlexBase< R >::SOLVEMODE_RATIONAL, SoPlexBase< R >::SYNCMODE, and SoPlexBase< R >::SYNCMODE_AUTO.

SoPlex_setRealParam()

void SoPlex_setRealParam	(	void *	soplex,
		int	paramcode,
		double	paramvalue
	)

sets real parameter value

Definition at line 94 of file soplex_interface.cpp.

SoPlex_writeFileReal()

void SoPlex_writeFileReal	(	void *	soplex,
		char *	filename
	)

write LP to file; LP or MPS format is chosen from the extension in filename

Definition at line 416 of file soplex_interface.cpp.