AbcSimplexPrimal.hpp

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/* $Id: AbcSimplexPrimal.hpp 1910 2013-01-27 02:00:13Z stefan $ */
// Copyright (C) 2002, International Business Machines
// Corporation and others, Copyright (C) 2012, FasterCoin.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
/*
   Authors

   John Forrest

 */
#ifndef AbcSimplexPrimal_H
#define AbcSimplexPrimal_H

#include "AbcSimplex.hpp"

class AbcSimplexPrimal : public AbcSimplex {

public:

     int primal(int ifValuesPass = 0, int startFinishOptions = 0);

     void alwaysOptimal(bool onOff);
     bool alwaysOptimal() const;
     void exactOutgoing(bool onOff);
     bool exactOutgoing() const;

     int whileIterating(int valuesOption);

     int pivotResult(int ifValuesPass = 0);
     int pivotResult4(int ifValuesPass = 0);


     int updatePrimalsInPrimal(CoinIndexedVector * rowArray,
                               double theta,
                               double & objectiveChange,
                               int valuesPass);
     void updatePrimalsInPrimal(CoinIndexedVector & rowArray,
                                double theta,bool valuesPass);
     void createUpdateDuals(CoinIndexedVector & rowArray,
                           const double * originalCost,
                            const double extraCost[4],
                           double & objectiveChange,
                           int valuesPass);
     double updateMinorCandidate(const CoinIndexedVector & updateBy,
                                 CoinIndexedVector & candidate,
                                 int sequenceIn);
     void updatePartialUpdate(CoinIndexedVector & partialUpdate);
  int doFTUpdate(CoinIndexedVector * vector[4]);
     void primalRow(CoinIndexedVector * rowArray,
                    CoinIndexedVector * rhsArray,
                    CoinIndexedVector * spareArray,
                    int valuesPass);
  typedef struct {
    double theta_;
    double alpha_;
    double saveDualIn_;
    double dualIn_;
    double lowerIn_;
    double upperIn_;
    double valueIn_;
    int sequenceIn_;
    int directionIn_;
    double dualOut_;
    double lowerOut_;
    double upperOut_;
    double valueOut_;
    int sequenceOut_;
    int directionOut_;
    int pivotRow_;
    int valuesPass_;
  } pivotStruct;
     void primalRow(CoinIndexedVector * rowArray,
                    CoinIndexedVector * rhsArray,
                    CoinIndexedVector * spareArray,
                    pivotStruct & stuff);
     void primalColumn(CoinPartitionedVector * updateArray,
                       CoinPartitionedVector * spareRow2,
                       CoinPartitionedVector * spareColumn1);

     int checkUnbounded(CoinIndexedVector * ray, CoinIndexedVector * spare,
                        double changeCost);
  void statusOfProblemInPrimal(int type);
     void perturb(int type);
     bool unPerturb();
     int unflag();
     int nextSuperBasic(int superBasicType, CoinIndexedVector * columnArray);

     void primalRay(CoinIndexedVector * rowArray);
     void clearAll();

     int lexSolve();

};
#endif