CbcIntegerBranchingObject Class Reference

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

#include <CbcBranchActual.hpp>

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List of all members.

Public Member Functions

 CbcIntegerBranchingObject ()
 Default constructor.
 CbcIntegerBranchingObject (CbcModel *model, int variable, int way, double value)
 Create a standard floor/ceiling branch object.
 CbcIntegerBranchingObject (CbcModel *model, int variable, int way, double lowerValue, double upperValue)
 Create a degenerate branch object.
 CbcIntegerBranchingObject (const CbcIntegerBranchingObject &)
 Copy constructor.
CbcIntegerBranchingObjectoperator= (const CbcIntegerBranchingObject &rhs)
 Assignment operator.
virtual CbcBranchingObjectclone () const
 Clone.
virtual ~CbcIntegerBranchingObject ()
 Destructor.
virtual double branch (bool normalBranch=false)
 Sets the bounds for the variable according to the current arm of the branch and advances the object state to the next arm.
virtual void print (bool normalBranch)
 Print something about branch - only if log level high.

Protected Attributes

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

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.

Variable_ holds the index of the integer variable in the integerVariable_ array of the model.

Definition at line 375 of file CbcBranchActual.hpp.


Constructor & Destructor Documentation

CbcIntegerBranchingObject::CbcIntegerBranchingObject (  ) 

Default constructor.

CbcIntegerBranchingObject::CbcIntegerBranchingObject ( CbcModel model,
int  variable,
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.

CbcIntegerBranchingObject::CbcIntegerBranchingObject ( CbcModel model,
int  variable,
int  way,
double  lowerValue,
double  upperValue 
)

Create a degenerate branch object.

Specifies a `one-way branch'. Calling branch() for this object will always result in lowerValue <= x <= upperValue. Used to fix a variable when lowerValue = upperValue.

CbcIntegerBranchingObject::CbcIntegerBranchingObject ( const CbcIntegerBranchingObject  ) 

Copy constructor.

virtual CbcIntegerBranchingObject::~CbcIntegerBranchingObject (  )  [virtual]

Destructor.


Member Function Documentation

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

Assignment operator.

virtual CbcBranchingObject* CbcIntegerBranchingObject::clone (  )  const [virtual]

Clone.

Implements CbcBranchingObject.

Reimplemented in CbcIntegerPseudoCostBranchingObject, and CbcDynamicPseudoCostBranchingObject.

virtual double CbcIntegerBranchingObject::branch ( bool  normalBranch = false  )  [virtual]

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

Returns change in guessed objective on next branch

Implements CbcBranchingObject.

Reimplemented in CbcIntegerPseudoCostBranchingObject, and CbcDynamicPseudoCostBranchingObject.

virtual void CbcIntegerBranchingObject::print ( bool  normalBranch  )  [virtual]

Print something about branch - only if log level high.

Reimplemented from CbcBranchingObject.


Member Data Documentation

double CbcIntegerBranchingObject::down_[2] [protected]

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

Definition at line 426 of file CbcBranchActual.hpp.

double CbcIntegerBranchingObject::up_[2] [protected]

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

Definition at line 428 of file CbcBranchActual.hpp.


The documentation for this class was generated from the following file:
Generated on Thu May 15 21:59:58 2008 by  doxygen 1.4.7