Primal Column Pivot Dantzig Algorithm Class. More...

#include <ClpPrimalQuadraticDantzig.hpp>

Inheritance diagram for ClpPrimalQuadraticDantzig:

Collaboration diagram for ClpPrimalQuadraticDantzig:

Public Member Functions
Algorithmic methods
virtual int	pivotColumn (CoinIndexedVector updates, CoinIndexedVector spareRow1, CoinIndexedVector spareRow2, CoinIndexedVector spareColumn1, CoinIndexedVector *spareColumn2)
	Returns pivot column, -1 if none. More...

virtual void	saveWeights (ClpSimplex *model, int mode)
	Just sets model. More...

Constructors and destructors
	ClpPrimalQuadraticDantzig ()
	Default Constructor. More...

	ClpPrimalQuadraticDantzig (const ClpPrimalQuadraticDantzig &)
	Copy constructor. More...

	ClpPrimalQuadraticDantzig (ClpSimplexPrimalQuadratic model, ClpQuadraticInfo info)
	Constructor from model. More...

ClpPrimalQuadraticDantzig &	operator= (const ClpPrimalQuadraticDantzig &rhs)
	Assignment operator. More...

virtual	~ClpPrimalQuadraticDantzig ()
	Destructor. More...

virtual ClpPrimalColumnPivot *	clone (bool copyData=true) const
	Clone. More...

Public Member Functions inherited from ClpPrimalColumnPivot
virtual void	updateWeights (CoinIndexedVector *input)
	Updates weights - part 1 (may be empty) More...

virtual int	pivotRow (double &way)
	Signals pivot row choice: -2 (default) - use normal pivot row choice -1 to numberRows-1 - use this (will be checked) way should be -1 to go to lower bound, +1 to upper bound. More...

virtual void	clearArrays ()
	Gets rid of all arrays (may be empty) More...

virtual bool	looksOptimal () const
	Returns true if would not find any column. More...

virtual void	setLooksOptimal (bool flag)
	Sets optimality flag (for advanced use) More...

	ClpPrimalColumnPivot ()
	Default Constructor. More...

	ClpPrimalColumnPivot (const ClpPrimalColumnPivot &)
	Copy constructor. More...

ClpPrimalColumnPivot &	operator= (const ClpPrimalColumnPivot &rhs)
	Assignment operator. More...

virtual	~ClpPrimalColumnPivot ()
	Destructor. More...

ClpSimplex *	model ()
	Returns model. More...

void	setModel (ClpSimplex *newmodel)
	Sets model. More...

int	type ()
	Returns type (above 63 is extra information) More...

virtual int	numberSprintColumns (int &numberIterations) const
	Returns number of extra columns for sprint algorithm - 0 means off. More...

virtual void	switchOffSprint ()
	Switch off sprint idea. More...

virtual void	maximumPivotsChanged ()
	Called when maximum pivots changes. More...

Private Attributes
Private member data
Pointer to info
ClpQuadraticInfo *	quadraticInfo_

Additional Inherited Members
Protected Attributes inherited from ClpPrimalColumnPivot
ClpSimplex *	model_
	Pointer to model. More...

int	type_
	Type of column pivot algorithm. More...

bool	looksOptimal_
	Says if looks optimal (normally computed) More...

Detailed Description

Primal Column Pivot Dantzig Algorithm Class.

This is simplest choice - choose largest infeasibility

Definition at line 20 of file ClpPrimalQuadraticDantzig.hpp.

Constructor & Destructor Documentation

◆ ClpPrimalQuadraticDantzig() [1/3]

ClpPrimalQuadraticDantzig::ClpPrimalQuadraticDantzig ( )

Default Constructor.

◆ ClpPrimalQuadraticDantzig() [2/3]

ClpPrimalQuadraticDantzig::ClpPrimalQuadraticDantzig ( const ClpPrimalQuadraticDantzig & )

Copy constructor.

◆ ClpPrimalQuadraticDantzig() [3/3]

ClpPrimalQuadraticDantzig::ClpPrimalQuadraticDantzig	(	ClpSimplexPrimalQuadratic *	model,
		ClpQuadraticInfo *	info
	)

Constructor from model.

◆ ~ClpPrimalQuadraticDantzig()

virtual ClpPrimalQuadraticDantzig::~ClpPrimalQuadraticDantzig ( )

virtual

Destructor.

Member Function Documentation

◆ pivotColumn()

virtual int ClpPrimalQuadraticDantzig::pivotColumn	(	CoinIndexedVector *	updates,
		CoinIndexedVector *	spareRow1,
		CoinIndexedVector *	spareRow2,
		CoinIndexedVector *	spareColumn1,
		CoinIndexedVector *	spareColumn2
	)

virtual

Returns pivot column, -1 if none.

Lumbers over all columns - slow updateArray has cost updates (also use pivotRow_ from last iteration) Can just do full price if you really want to be slow

Implements ClpPrimalColumnPivot.