Simple branching object for an integer variable. More...

#include <OsiBranchingObject.hpp>

Inheritance diagram for OsiIntegerBranchingObject:

Collaboration diagram for OsiIntegerBranchingObject:

Public Member Functions
	OsiIntegerBranchingObject ()
	Default constructor. More...

	OsiIntegerBranchingObject (OsiSolverInterface solver, const OsiSimpleInteger originalObject, int way, double value)
	Create a standard floor/ceiling branch object. More...

	OsiIntegerBranchingObject (OsiSolverInterface solver, const OsiSimpleInteger originalObject, int way, double value, double downUpperBound, double upLowerBound)
	Create a standard floor/ceiling branch object. More...

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

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

virtual OsiBranchingObject *	clone () const
	Clone. More...

virtual	~OsiIntegerBranchingObject ()
	Destructor. More...

virtual double	branch (OsiSolverInterface *solver)
	Sets the bounds for the variable according to the current arm of the branch and advances the object state to the next arm. More...

virtual void	print (const OsiSolverInterface *solver=NULL)
	Print something about branch - only if log level high. More...

Public Member Functions inherited from OsiTwoWayBranchingObject
	OsiTwoWayBranchingObject ()
	Default constructor. More...

	OsiTwoWayBranchingObject (OsiSolverInterface solver, const OsiObject originalObject, int way, double value)
	Create a standard tw0-way branch object. More...

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

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

virtual	~OsiTwoWayBranchingObject ()
	Destructor. More...

int	firstBranch () const

int	way () const
	Way returns -1 on down +1 on up. More...

Public Member Functions inherited from OsiBranchingObject
	OsiBranchingObject ()
	Default Constructor. More...

	OsiBranchingObject (OsiSolverInterface *solver, double value)
	Constructor. More...

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

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

virtual	~OsiBranchingObject ()
	Destructor. More...

int	numberBranches () const
	The number of branch arms created for this branching object. More...

int	numberBranchesLeft () const
	The number of branch arms left for this branching object. More...

void	incrementNumberBranchesLeft ()
	Increment the number of branch arms left for this branching object. More...

void	setNumberBranchesLeft (int)
	Set the number of branch arms left for this branching object Just for forcing. More...

void	decrementNumberBranchesLeft ()
	Decrement the number of branch arms left for this branching object. More...

virtual double	branch ()
	Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state. More...

virtual bool	boundBranch () const
	Return true if branch should fix variables. More...

int	branchIndex () const
	Get the state of the branching object This is just the branch index. More...

void	setBranchingIndex (int branchIndex)
	Set the state of the branching object. More...

double	value () const
	Current value. More...

const OsiObject *	originalObject () const
	Return pointer back to object which created. More...

void	setOriginalObject (const OsiObject *object)
	Set pointer back to object which created. More...

virtual void	checkIsCutoff (double)
	Double checks in case node can change its mind! Returns objective value Can change objective etc. More...

int	columnNumber () const
	For debug. More...

virtual void	print (const OsiSolverInterface *=NULL) const
	Print something about branch - only if log level high. More...

Protected Attributes
double	down_ [2]
	Lower [0] and upper [1] bounds for the down arm (way_ = -1) More...

double	up_ [2]
	Lower [0] and upper [1] bounds for the up arm (way_ = 1) More...

Protected Attributes inherited from OsiTwoWayBranchingObject
int	firstBranch_
	Which way was first branch -1 = down, +1 = up. More...

Protected Attributes inherited from OsiBranchingObject
double	value_
	Current value - has some meaning about branch. More...

const OsiObject *	originalObject_
	Pointer back to object which created. More...

int	numberBranches_
	Number of branches. More...

short	branchIndex_
	The state of the branching object. More...

Detailed Description

Simple branching object for an integer variable.

This object can specify a two-way branch on an integer variable. For each arm of the branch, the upper and lower bounds on the variable can be independently specified. 0 -> down, 1-> up.

Definition at line 607 of file OsiBranchingObject.hpp.

Constructor & Destructor Documentation

OsiIntegerBranchingObject::OsiIntegerBranchingObject ( )

Default constructor.

OsiIntegerBranchingObject::OsiIntegerBranchingObject	(	OsiSolverInterface *	solver,
		const OsiSimpleInteger *	originalObject,
		int	way,
		double	value
	)

Create a standard floor/ceiling branch object.

Specifies a simple two-way branch. Let value = x*. One arm of the branch will be lb <= x <= floor(x*), the other ceil(x*) <= x <= ub. Specify way = -1 to set the object state to perform the down arm first, way = 1 for the up arm.

OsiIntegerBranchingObject::OsiIntegerBranchingObject	(	OsiSolverInterface *	solver,
		const OsiSimpleInteger *	originalObject,
		int	way,
		double	value,
		double	downUpperBound,
		double	upLowerBound
	)

Create a standard floor/ceiling branch object.

Specifies a simple two-way branch in a more flexible way. One arm of the branch will be lb <= x <= downUpperBound, the other upLowerBound <= x <= ub. Specify way = -1 to set the object state to perform the down arm first, way = 1 for the up arm.

OsiIntegerBranchingObject::OsiIntegerBranchingObject ( const OsiIntegerBranchingObject & )

Copy constructor.

virtual OsiIntegerBranchingObject::~OsiIntegerBranchingObject ( )

virtual

Destructor.

Member Function Documentation

OsiIntegerBranchingObject& OsiIntegerBranchingObject::operator= ( const OsiIntegerBranchingObject & rhs )

Assignment operator.

virtual OsiBranchingObject* OsiIntegerBranchingObject::clone ( ) const

virtual

Clone.

Implements OsiBranchingObject.

virtual double OsiIntegerBranchingObject::branch ( OsiSolverInterface * solver )

virtual

Sets the bounds for the variable according to the current arm of the branch and advances the object state to the next arm.

state. Returns change in guessed objective on next branch

Implements OsiTwoWayBranchingObject.

virtual void OsiIntegerBranchingObject::print ( const OsiSolverInterface * solver = NULL )

virtual

Print something about branch - only if log level high.

Member Data Documentation

double OsiIntegerBranchingObject::down_[2]

protected

Lower [0] and upper [1] bounds for the down arm (way_ = -1)

Definition at line 661 of file OsiBranchingObject.hpp.

double OsiIntegerBranchingObject::up_[2]

protected

Lower [0] and upper [1] bounds for the up arm (way_ = 1)

Definition at line 663 of file OsiBranchingObject.hpp.

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

/home/coin/svn-release/Blis-0.94.3/Osi/src/Osi/OsiBranchingObject.hpp

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation