ClpQuadraticObjective.hpp

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/* $Id: ClpQuadraticObjective.hpp 2385 2019-01-06 19:43:06Z unxusr $ */
// 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 ClpQuadraticObjective_H
#define ClpQuadraticObjective_H

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

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

class ClpQuadraticObjective : 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);



  ClpQuadraticObjective();

  ClpQuadraticObjective(const double *linearObjective, int numberColumns,
    const CoinBigIndex *start,
    const int *column, const double *element,
    int numberExtendedColumns_ = -1);

  ClpQuadraticObjective(const ClpQuadraticObjective &rhs, int type = 0);
  ClpQuadraticObjective(const ClpQuadraticObjective &rhs, int numberColumns,
    const int *whichColumns);

  ClpQuadraticObjective &operator=(const ClpQuadraticObjective &rhs);

  virtual ~ClpQuadraticObjective();

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

  void loadQuadraticObjective(const int numberColumns,
    const CoinBigIndex *start,
    const int *column, const double *element,
    int numberExtendedColumns = -1);
  void loadQuadraticObjective(const CoinPackedMatrix &matrix);
  void deleteQuadraticObjective();

  inline CoinPackedMatrix *quadraticObjective() const
  {
    return quadraticObjective_;
  }
  inline double *linearObjective() const
  {
    return objective_;
  }
  inline int numberExtendedColumns() const
  {
    return numberExtendedColumns_;
  }
  inline int numberColumns() const
  {
    return numberColumns_;
  }
  inline bool fullMatrix() const
  {
    return fullMatrix_;
  }

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

private:
  CoinPackedMatrix *quadraticObjective_;
  double *objective_;
  double *gradient_;
  int numberColumns_;
  int numberExtendedColumns_;
  bool fullMatrix_;
};

#endif

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