ClpAmplObjective.hpp

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/* $Id: ClpAmplObjective.hpp 1173 2009-06-04 09:44:10Z forrest $ */
// Copyright (C) 2007, International Business Machines
// Corporation and others.  All Rights Reserved.
#ifndef ClpAmplObjective_H
#define ClpAmplObjective_H

#include "ClpObjective.hpp"
#include "CoinPackedMatrix.hpp"

//#############################################################################

class ClpAmplObjective : public ClpObjective {

public:



    virtual double * gradient(const ClpSimplex * model,
                              const double * solution, double & offset, bool refresh,
                              int includeLinear = 2);

    virtual double reducedGradient(ClpSimplex * model, double * region,
                                   bool useFeasibleCosts);
    virtual double stepLength(ClpSimplex * model,
                              const double * solution,
                              const double * change,
                              double maximumTheta,
                              double & currentObj,
                              double & predictedObj,
                              double & thetaObj);
    virtual double objectiveValue(const ClpSimplex * model, const double * solution) const ;
    virtual void resize(int newNumberColumns) ;
    virtual void deleteSome(int numberToDelete, const int * which) ;
    virtual void reallyScale(const double * columnScale) ;
    virtual int markNonlinear(char * which);

    virtual void newXValues() ;



    ClpAmplObjective();

    ClpAmplObjective(void * amplInfo);

    ClpAmplObjective(const ClpAmplObjective & rhs);

    ClpAmplObjective & operator=(const ClpAmplObjective& rhs);

    virtual ~ClpAmplObjective ();

    virtual ClpObjective * clone() const;


    double * linearObjective() const;

    //---------------------------------------------------------------------------

private:
    double offset_;
    void * amplObjective_;
    double * objective_;
    double * gradient_;
};

#endif