ClpConstraintQuadratic.hpp

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/* $Id$ */
// Copyright (C) 2007, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
 
#ifndef ClpConstraintQuadratic_H
#define ClpConstraintQuadratic_H
 
#include "ClpConstraint.hpp"
 
//#############################################################################

 
class ClpConstraintQuadratic : public ClpConstraint {
 
public:


  virtual int gradient(const ClpSimplex *model,
    const double *solution,
    double *gradient,
    double &functionValue,
    double &offset,
    bool useScaling = false,
    bool refresh = true) 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) const;
  virtual int markNonzero(char *which) const;



  ClpConstraintQuadratic();

  ClpConstraintQuadratic(int row, int numberQuadraticColumns, int numberColumns,
    const CoinBigIndex *start,
    const int *column, const double *element);

  ClpConstraintQuadratic(const ClpConstraintQuadratic &rhs);

  ClpConstraintQuadratic &operator=(const ClpConstraintQuadratic &rhs);

  virtual ~ClpConstraintQuadratic();

  virtual ClpConstraint *clone() const;


  virtual int numberCoefficients() const;
  inline int numberColumns() const
  {
    return numberColumns_;
  }

  inline CoinBigIndex *start() const
  {
    return start_;
  }

  inline const int *column() const
  {
    return column_;
  }

  inline const double *coefficient() const
  {
    return coefficient_;
  }

 
  //---------------------------------------------------------------------------
 
private:
  CoinBigIndex *start_;
  int *column_;
  double *coefficient_;
  int numberColumns_;
  int numberCoefficients_;
  int numberQuadraticColumns_;
};
 
#endif
 
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