ABA_VALBRANCHRULE Class Reference

class implements a branching rule for setting a variable to a certain value. More...

#include <valbranchrule.h>

Inheritance diagram for ABA_VALBRANCHRULE:

List of all members.

Public Member Functions
	ABA_VALBRANCHRULE (ABA_MASTER *master, int variable, double value)
virtual	~ABA_VALBRANCHRULE ()
	The destructor.
virtual int	extract (ABA_SUB *sub)
virtual void	extract (ABA_LPSUB *lp)
	The function extract() is overloaded to modify directly the linear programming relaxation. This required to evaluate the quality of a branching rule.
virtual void	unExtract (ABA_LPSUB *lp)
	The function unExtract().
int	variable () const
double	value () const
Private Attributes
int	variable_
double	value_
double	oldLpLBound_
double	oldLpUBound_
Friends
ostream &	operator<< (ostream &out, const ABA_VALBRANCHRULE &rhs)
	The output operator writes the branching variable together with its value to an output stream.

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Detailed Description

class implements a branching rule for setting a variable to a certain value.

Parameters:

	int	variable_ The branching variable.
	double	value_ The value the branching variable is set to.

Definition at line 42 of file valbranchrule.h.

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Constructor & Destructor Documentation

ABA_VALBRANCHRULE::ABA_VALBRANCHRULE	(	ABA_MASTER *	master,
		int	variable,
		double	value
	)

The constructor.

Parameters:

	master	The corresponding master of the optimization.
	variable	The branching variable.
	value	The value the branching variable is set to.

virtual ABA_VALBRANCHRULE::~ABA_VALBRANCHRULE

(

)

[virtual]

The destructor.

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Member Function Documentation

virtual int ABA_VALBRANCHRULE::extract

(

ABA_SUB *

sub

)

[virtual]

Modifies a subproblem by setting the branching variable.

Returns:

0 If the subproblem can be modified according to the branching rule.

1 If a contradiction occurs.

Parameters:

sub

The subproblem being modified.

Implements ABA_BRANCHRULE.

virtual void ABA_VALBRANCHRULE::extract

(

ABA_LPSUB *

lp

)

[virtual]

The function extract() is overloaded to modify directly the linear programming relaxation. This required to evaluate the quality of a branching rule.

Reimplemented from ABA_BRANCHRULE.

virtual void ABA_VALBRANCHRULE::unExtract

(

ABA_LPSUB *

lp

)

[virtual]

The function unExtract().

Reimplemented from ABA_BRANCHRULE.

int ABA_VALBRANCHRULE::variable

(

)

const [inline]

Returns:

The number of the branching variable.

Definition at line 131 of file valbranchrule.h.

double ABA_VALBRANCHRULE::value

(

)

const [inline]

Returns:

The value of the branching variable.

Definition at line 136 of file valbranchrule.h.

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Friends And Related Function Documentation

ostream& operator<<	(	ostream &	out,
		const ABA_VALBRANCHRULE &	rhs
	)			[friend]

The output operator writes the branching variable together with its value to an output stream.

Returns:

A reference to the output stream.

Parameters:

	out	The output stream.
	rhs	The branching rule being output.

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Member Data Documentation

int ABA_VALBRANCHRULE::variable_ [private]

Definition at line 124 of file valbranchrule.h.

double ABA_VALBRANCHRULE::value_ [private]

Definition at line 125 of file valbranchrule.h.

double ABA_VALBRANCHRULE::oldLpLBound_ [private]

Definition at line 126 of file valbranchrule.h.

double ABA_VALBRANCHRULE::oldLpUBound_ [private]

Definition at line 127 of file valbranchrule.h.

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The documentation for this class was generated from the following file:

• Include/abacus/valbranchrule.h

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