/* $Id: CbcHeuristicDivePseudoCost.hpp 1240 2009-10-02 18:41:44Z forrest $ */
// 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 CbcHeuristicDivePseudoCost_H
#define CbcHeuristicDivePseudoCost_H

#include "CbcHeuristicDive.hpp"

/** DivePseudoCost class
 */

class CbcHeuristicDivePseudoCost : public CbcHeuristicDive {
public:

    // Default Constructor
    CbcHeuristicDivePseudoCost ();

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

    // Copy constructor
    CbcHeuristicDivePseudoCost ( const CbcHeuristicDivePseudoCost &);

    // Destructor
    ~CbcHeuristicDivePseudoCost ();

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

    /// Assignment operator
    CbcHeuristicDivePseudoCost & operator=(const CbcHeuristicDivePseudoCost& 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);
    /** Initializes any data which is going to be used repeatedly
        in selectVariableToBranch */
    virtual void initializeData() ;
    /// Fix other variables at bounds
    virtual int fixOtherVariables(OsiSolverInterface * solver,
                                  const double * solution,
                                  PseudoReducedCost * candidate,
                                  const double * random);

};

#endif

