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...

Inheritance diagram for SPxMainSM::FreeZeroObjVariablePS:

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

Constructor & Destructor Documentation

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

Definition at line 578 of file spxmainsm.h.

References DSVectorBase< R >::add(), SVectorBase< R >::index(), soplex::isNotZero(), SPxLPBase< R >::lhs(), SPxMainSM::FreeZeroObjVariablePS::m_col, SPxMainSM::FreeZeroObjVariablePS::m_loFree, SPxMainSM::FreeZeroObjVariablePS::m_lRhs, SPxMainSM::FreeZeroObjVariablePS::m_rowObj, SPxMainSM::FreeZeroObjVariablePS::m_rows, SPxLPBase< R >::rhs(), SPxLPBase< R >::rowObj(), SPxLPBase< R >::rowVector(), SVectorBase< R >::size(), and SVectorBase< R >::value().

Referenced by SPxMainSM::FreeZeroObjVariablePS::clone().

FreeZeroObjVariablePS

(

const FreeZeroObjVariablePS &

old

)

copy constructor

Definition at line 606 of file spxmainsm.h.

Member Function Documentation

virtual PostStep* clone ( ) const

virtual

clone function for polymorphism

Implements SPxMainSM::PostStep.

Definition at line 633 of file spxmainsm.h.

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

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

virtual

Implements SPxMainSM::PostStep.

Definition at line 514 of file spxmainsm.cpp.

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

FreeZeroObjVariablePS& operator=

(

const FreeZeroObjVariablePS &

rhs

)

assignment operator

Definition at line 619 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

const Real m_bnd

private

Definition at line 569 of file spxmainsm.h.

DSVector m_col

private

Definition at line 570 of file spxmainsm.h.

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

const int m_j

private

Definition at line 566 of file spxmainsm.h.

const bool m_loFree

private

Definition at line 574 of file spxmainsm.h.

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

DSVector m_lRhs

private

Definition at line 571 of file spxmainsm.h.

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

const int m_old_i

private

Definition at line 568 of file spxmainsm.h.

const int m_old_j

private

Definition at line 567 of file spxmainsm.h.

DSVector m_rowObj

private

Definition at line 572 of file spxmainsm.h.

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

Array<DSVector> m_rows

private

Definition at line 573 of file spxmainsm.h.

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