CouenneBTPerfIndicator.hpp

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/* $Id: CouenneBTPerfIndicator.hpp 1004 2013-10-13 16:04:19Z pbelotti $
 *
 * Name:    CouenneBTPerfIndicator.hpp
 * Author:  Pietro Belotti
 * Purpose: Measures performance of BT in terms of shrunken bounds
 *
 * (C) Pietro Belotti, 2011.
 * This file is licensed under the Eclipse Public License (EPL)
 */

#ifndef COUENNEBTPERFINDICATOR_HPP
#define COUENNEBTPERFINDICATOR_HPP

#include "CoinHelperFunctions.hpp"
#include <string.h>

#include "CouenneTypes.hpp"

namespace Couenne {

  class CouenneProblem;

  class CouenneBTPerfIndicator {

  protected:

    std::string name_;                

    mutable double nFixed_;           
    mutable double boundRatio_;       
    mutable double shrunkInf_;        
    mutable double shrunkDoubleInf_;  
    mutable double nProvedInfeas_;    

    mutable double weightSum_;        

    mutable double *oldLB_;           
    mutable double *oldUB_;           

    mutable double totalTime_;        

    mutable int    nRuns_;            

    CouenneProblem *problem_;         

    bool stats_;                      

  public:


    CouenneBTPerfIndicator (CouenneProblem *p, const std::string &name);

    ~CouenneBTPerfIndicator ();

    CouenneBTPerfIndicator (const CouenneBTPerfIndicator &rhs);

    CouenneBTPerfIndicator &operator= (const CouenneBTPerfIndicator &rhs);

    void setOldBounds (const CouNumber *lb, const CouNumber *ub) const;

    void addToTimer (double time) const;

    void update (const CouNumber *lb, const CouNumber *ub, int depth) const;
  };
}

#endif