ClpDualRowSteepest.hpp

// Copyright (C) 2002, International Business Machines
// Corporation and others.  All Rights Reserved.
#ifndef ClpDualRowSteepest_H
#define ClpDualRowSteepest_H

#include "ClpDualRowPivot.hpp"

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

class CoinIndexedVector;

class ClpDualRowSteepest : public ClpDualRowPivot {
  
public:
  

  
  virtual int pivotRow();
  
  virtual double updateWeights(CoinIndexedVector * input,
                             CoinIndexedVector * spare,
                             CoinIndexedVector * updatedColumn);
  
  virtual void updatePrimalSolution(CoinIndexedVector * input,
                                    double theta,
                                    double & changeInObjective);

  virtual void saveWeights(ClpSimplex * model, int mode);
  virtual void unrollWeights();
  virtual void clearArrays();
  virtual bool looksOptimal() const;
  
  


  ClpDualRowSteepest(int mode=3); 
  
  ClpDualRowSteepest(const ClpDualRowSteepest &);
  
  ClpDualRowSteepest & operator=(const ClpDualRowSteepest& rhs);
  
  virtual ~ClpDualRowSteepest ();

  virtual ClpDualRowPivot * clone(bool copyData = true) const;
 


  inline int mode() const
    { return mode_;};

  //---------------------------------------------------------------------------
  
private:

  int state_;
  int mode_;
  double * weights_;
  CoinIndexedVector * infeasible_;
  CoinIndexedVector * alternateWeights_;
  CoinIndexedVector * savedWeights_;
  int * dubiousWeights_;
};

#endif

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