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SoPlex

Sequential object-oriented simPlex

SPxMainSM::FixVariablePS Class Reference

Postsolves variable fixing. More...

Public Member Functions

 FixVariablePS (const SPxLP &lp, SPxMainSM &simplifier, int _j, const Real val, bool correctIdx=true)
 
 FixVariablePS (const FixVariablePS &old)
 copy constructor More...
 
FixVariablePSoperator= (const FixVariablePS &rhs)
 assignment operator More...
 
virtual PostStepclone () 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...
 
PostStepoperator= (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 Real m_val
 
const Real m_obj
 
const Real m_lower
 
const Real m_upper
 
const bool m_correctIdx
 
DSVector m_col
 does the index mapping have to be updated in postsolving? More...
 

Additional Inherited Members

- Static Public Member Functions inherited from SPxMainSM::PostStep
static Real eps ()
 

Detailed Description

Postsolves variable fixing.

Definition at line 456 of file spxmainsm.h.

Constructor & Destructor Documentation

◆ FixVariablePS() [1/2]

FixVariablePS ( const SPxLP lp,
SPxMainSM simplifier,
int  _j,
const Real  val,
bool  correctIdx = true 
)

Definition at line 470 of file spxmainsm.h.

References SPxSimplifier::addObjoffset(), and SPxLPBase< R >::obj().

◆ FixVariablePS() [2/2]

FixVariablePS ( const FixVariablePS old)

copy constructor

Definition at line 485 of file spxmainsm.h.

Member Function Documentation

◆ clone()

virtual PostStep* clone ( ) const
virtual

clone function for polymorphism

Implements SPxMainSM::PostStep.

Definition at line 508 of file spxmainsm.h.

References SPxMainSM::PostStep::execute(), and SPxMainSM::FixVariablePS.

◆ execute()

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

◆ operator=()

FixVariablePS& operator= ( const FixVariablePS rhs)

assignment operator

Definition at line 497 of file spxmainsm.h.

References SPxMainSM::FixVariablePS::m_col, and SPxMainSM::PostStep::operator=().

Member Data Documentation

◆ m_col

DSVector m_col
private

does the index mapping have to be updated in postsolving?

Definition at line 466 of file spxmainsm.h.

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

◆ m_correctIdx

const bool m_correctIdx
private

Definition at line 465 of file spxmainsm.h.

◆ m_j

const int m_j
private

Definition at line 459 of file spxmainsm.h.

◆ m_lower

const Real m_lower
private

Definition at line 463 of file spxmainsm.h.

◆ m_obj

const Real m_obj
private

Definition at line 462 of file spxmainsm.h.

◆ m_old_j

const int m_old_j
private

Definition at line 460 of file spxmainsm.h.

◆ m_upper

const Real m_upper
private

Definition at line 464 of file spxmainsm.h.

◆ m_val

const Real m_val
private

Definition at line 461 of file spxmainsm.h.