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Class IloCplex::FractionalCutCallbackI

Definition file: ilcplex/ilocplexi.h

An instance of the class IloCplex::FractionalCutCallbackI represents a user-written callback in an application that uses an instance of IloCplex to solve a mixed integer programming problem (a MIP). This class offers a method to check on the progress of the generation of fractional cuts.

The constructor and methods of this class are protected for use in deriving a user-written callback class and in implementing the main method there.

If an attempt is made to access information not available to an instance of this class, an exception is thrown.

See Also:

IloCplex, IloCplex::Callback, IloCplex::CallbackI, IloCplex::MIPCallbackI, IloCplex::OptimizationCallbackI, ILOFRACTIONALCUTCALLBACK0

Constructor Summary
protected FractionalCutCallbackI(IloEnv env)
Method Summary
protected IloNumgetProgress() const
Inherited Methods from MIPCallbackI
getNcliques, getNcovers, getNdisjunctiveCuts, getNflowCovers, getNflowPaths, getNfractionalCuts, getNGUBcovers, getNimpliedBounds, getNMIRs, getObjCoef, getObjCoef, getObjCoefs, getObjCoefs, getUserThreads
Inherited Methods from MIPInfoCallbackI
getBestObjValue, getCutoff, getDirection, getDirection, getIncumbentObjValue, getIncumbentSlack, getIncumbentSlacks, getIncumbentValue, getIncumbentValue, getIncumbentValues, getIncumbentValues, getMyThreadNum, getNiterations, getNnodes, getNremainingNodes, getPriority, getPriority, hasIncumbent
Inherited Methods from OptimizationCallbackI
getModel, getNcols, getNQCs, getNrows
Inherited Methods from CallbackI
abort, duplicateCallback, getEnv, main
Constructor Detail

FractionalCutCallbackI

protected FractionalCutCallbackI(IloEnv env)

This constructor creates a callback for use in an application where fractional cuts are generated.

Method Detail

getProgress

protected IloNum getProgress() const

This method returns the fraction of completion of the fractional cut generation pass.