SPxMainSM::FreeZeroObjVariablePS Class Reference

Postsolves the case when constraints are removed due to a variable with zero objective that is free in one direction. More...

Public Member Functions
	FreeZeroObjVariablePS (const SPxLP &lp, int _j, bool loFree, SVector col_idx_sorted)
	FreeZeroObjVariablePS (const FreeZeroObjVariablePS &old)
	copy constructor More...
FreeZeroObjVariablePS &	operator= (const FreeZeroObjVariablePS &rhs)
	assignment operator More...
virtual PostStep *	clone () const
	clone function for polymorphism More...
virtual void	execute (DVector &x, DVector &y, DVector &s, DVector &r, DataArray< SPxSolver::VarStatus > &cBasis, DataArray< SPxSolver::VarStatus > &rBasis, bool isOptimal) const
Public Member Functions inherited from SPxMainSM::PostStep
	PostStep (const char *p_name, int nR=0, int nC=0)
	constructor. More...
	PostStep (const PostStep &old)
	copy constructor. More...
PostStep &	operator= (const PostStep &)
	assignment operator More...
virtual	~PostStep ()
	destructor. More...
virtual const char *	getName () const
	get name of simplifying step. More...
virtual bool	checkBasisDim (DataArray< SPxSolver::VarStatus > rows, DataArray< SPxSolver::VarStatus > cols) const

Private Attributes
const int	m_j
const int	m_old_j
const int	m_old_i
const Real	m_bnd
DSVector	m_col
DSVector	m_lRhs
DSVector	m_rowObj
Array< DSVector >	m_rows
const bool	m_loFree

Additional Inherited Members
Static Public Member Functions inherited from SPxMainSM::PostStep
static Real	eps ()

Detailed Description

Postsolves the case when constraints are removed due to a variable with zero objective that is free in one direction.

Definition at line 580 of file spxmainsm.h.

Constructor & Destructor Documentation

FreeZeroObjVariablePS() [1/2]

FreeZeroObjVariablePS	(	const SPxLP &	lp,
		int	_j,
		bool	loFree,
		SVector	col_idx_sorted
	)

Definition at line 595 of file spxmainsm.h.

References DSVectorBase< R >::add(), SVectorBase< R >::index(), soplex::isNotZero(), SPxLPBase< R >::lhs(), SPxLPBase< R >::rhs(), SPxLPBase< R >::rowObj(), SPxLPBase< R >::rowVector(), SVectorBase< R >::size(), and SVectorBase< R >::value().

FreeZeroObjVariablePS() [2/2]

FreeZeroObjVariablePS

(

const FreeZeroObjVariablePS &

old

)

copy constructor

Definition at line 624 of file spxmainsm.h.

Member Function Documentation

clone()

virtual PostStep* clone ( ) const

virtual

clone function for polymorphism

Implements SPxMainSM::PostStep.

Definition at line 651 of file spxmainsm.h.

References SPxMainSM::PostStep::execute(), SPxMainSM::FreeZeroObjVariablePS, and soplex::spx_alloc().

execute()

void execute ( DVector &  x, DVector &  y, DVector &  s, DVector &  r, DataArray< SPxSolver::VarStatus > &  cBasis, DataArray< SPxSolver::VarStatus > &  rBasis, bool  isOptimal  ) const

virtual

Implements SPxMainSM::PostStep.

Definition at line 550 of file spxmainsm.cpp.

References SVectorBase< R >::add(), SPxSolver::BASIC, SPxMainSM::PostStep::checkBasisDim(), SVectorBase< R >::index(), soplex::infinity, soplex::isZero(), soplex::maxAbs(), SPxSolver::ON_LOWER, SPxSolver::ON_UPPER, SPxMainSM::rIdx(), SVectorBase< R >::size(), and SVectorBase< R >::value().

operator=()

FreeZeroObjVariablePS& operator=

(

const FreeZeroObjVariablePS &

rhs

)

assignment operator

Definition at line 637 of file spxmainsm.h.

References SPxMainSM::FreeZeroObjVariablePS::m_col, SPxMainSM::FreeZeroObjVariablePS::m_lRhs, SPxMainSM::FreeZeroObjVariablePS::m_rowObj, SPxMainSM::FreeZeroObjVariablePS::m_rows, and SPxMainSM::PostStep::operator=().

Member Data Documentation

m_bnd

const Real m_bnd

private

Definition at line 586 of file spxmainsm.h.

m_col

DSVector m_col

private

Definition at line 587 of file spxmainsm.h.

Referenced by SPxMainSM::FreeZeroObjVariablePS::operator=().

m_j

const int m_j

private

Definition at line 583 of file spxmainsm.h.

m_loFree

const bool m_loFree

private

Definition at line 591 of file spxmainsm.h.

m_lRhs

DSVector m_lRhs

private

Definition at line 588 of file spxmainsm.h.

Referenced by SPxMainSM::FreeZeroObjVariablePS::operator=().

m_old_i

const int m_old_i

private

Definition at line 585 of file spxmainsm.h.

m_old_j

const int m_old_j

private

Definition at line 584 of file spxmainsm.h.

m_rowObj

DSVector m_rowObj

private

Definition at line 589 of file spxmainsm.h.

Referenced by SPxMainSM::FreeZeroObjVariablePS::operator=().

m_rows

Array<DSVector> m_rows

private

Definition at line 590 of file spxmainsm.h.

Referenced by SPxMainSM::FreeZeroObjVariablePS::operator=().