ClpLinearObjective.hpp

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/* $Id$ */
// Copyright (C) 2003, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
 
#ifndef ClpLinearObjective_H
#define ClpLinearObjective_H
 
#include "ClpObjective.hpp"
 
//#############################################################################

 
class ClpLinearObjective : 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);




  ClpLinearObjective();

  ClpLinearObjective(const double *objective, int numberColumns);

  ClpLinearObjective(const ClpLinearObjective &);
  ClpLinearObjective(const ClpLinearObjective &rhs, int numberColumns,
    const int *whichColumns);

  ClpLinearObjective &operator=(const ClpLinearObjective &rhs);

  virtual ~ClpLinearObjective();

  virtual ClpObjective *clone() const;
  virtual ClpObjective *subsetClone(int numberColumns,
    const int *whichColumns) const;

 
  //---------------------------------------------------------------------------
 
private:
  double *objective_;
  int numberColumns_;
};
 
#endif
 
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