CbcHeuristicDiveCoefficient.hpp

/* $Id$ */
// Copyright (C) 2008, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).

#ifndef CbcHeuristicDiveCoefficient_H
#define CbcHeuristicDiveCoefficient_H

#include "CbcHeuristicDive.hpp"

/** DiveCoefficient class
 */

class CbcHeuristicDiveCoefficient : public CbcHeuristicDive {
public:
  // Default Constructor
  CbcHeuristicDiveCoefficient();

  // Constructor with model - assumed before cuts
  CbcHeuristicDiveCoefficient(CbcModel &model);

  // Copy constructor
  CbcHeuristicDiveCoefficient(const CbcHeuristicDiveCoefficient &);

  // Destructor
  ~CbcHeuristicDiveCoefficient();

  /// Clone
  virtual CbcHeuristicDiveCoefficient *clone() const;

  /// Assignment operator
  CbcHeuristicDiveCoefficient &operator=(const CbcHeuristicDiveCoefficient &rhs);

  /// Create C++ lines to get to current state
  virtual void generateCpp(FILE *fp);

  /// Selects the next variable to branch on
  /** Returns true if all the fractional variables can be trivially
        rounded. Returns false, if there is at least one fractional variable
        that is not trivially roundable. In this case, the bestColumn
        returned will not be trivially roundable.
    */
  virtual bool selectVariableToBranch(OsiSolverInterface *solver,
    const double *newSolution,
    int &bestColumn,
    int &bestRound);
};

#endif

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