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# /home/coin/SVN-release/Osi-0.98.1/Clp/src/ClpSimplexDual.hpp

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    00001 // Copyright (C) 2002, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003
    00004 /*
    00005    Authors
    00006
    00007    John Forrest
    00008
    00009  */
    00010 #ifndef ClpSimplexDual_H
    00011 #define ClpSimplexDual_H
    00012
    00013 #include "ClpSimplex.hpp"
    00014
    00022 class ClpSimplexDual : public ClpSimplex {
    00023
    00024 public:
    00025
    00117   int dual(int ifValuesPass,int startFinishOptions=0);
    00126   int strongBranching(int numberVariables,const int * variables,
    00127                       double * newLower, double * newUpper,
    00128                       double ** outputSolution,
    00129                       int * outputStatus, int * outputIterations,
    00130                       bool stopOnFirstInfeasible=true,
    00131                       bool alwaysFinish=false,
    00132                       int startFinishOptions=0);
    00134   ClpFactorization * setupForStrongBranching(char * arrays, int numberRows, int numberColumns);
    00136   void cleanupAfterStrongBranching();
    00138
    00154   int whileIterating(double * & givenPi,int ifValuesPass);
    00162   int updateDualsInDual(CoinIndexedVector * rowArray,
    00163                   CoinIndexedVector * columnArray,
    00164                   CoinIndexedVector * outputArray,
    00165                   double theta,
    00166                   double & objectiveChange,
    00167                         bool fullRecompute);
    00171   void updateDualsInValuesPass(CoinIndexedVector * rowArray,
    00172                   CoinIndexedVector * columnArray,
    00173                   double theta);
    00178   void flipBounds(CoinIndexedVector * rowArray,
    00179                   CoinIndexedVector * columnArray,
    00180                   double change);
    00192   double dualColumn(CoinIndexedVector * rowArray,
    00193                   CoinIndexedVector * columnArray,
    00194                   CoinIndexedVector * spareArray,
    00195                   CoinIndexedVector * spareArray2,
    00196                   double accpetablePivot,
    00197                   CoinBigIndex * dubiousWeights);
    00199   int dualColumn0(const CoinIndexedVector * rowArray,
    00200                   const CoinIndexedVector * columnArray,
    00201                   CoinIndexedVector * spareArray,
    00202                   double acceptablePivot,
    00203                   double & upperReturn, double &bestReturn,double & badFree);
    00210   void checkPossibleValuesMove(CoinIndexedVector * rowArray,
    00211                                CoinIndexedVector * columnArray,
    00212                               double acceptablePivot);
    00219   void checkPossibleCleanup(CoinIndexedVector * rowArray,
    00220                                CoinIndexedVector * columnArray,
    00221                               double acceptablePivot);
    00226   void doEasyOnesInValuesPass(double * givenReducedCosts);
    00236   void dualRow(int alreadyChosen);
    00245   int changeBounds(bool initialize,CoinIndexedVector * outputArray,
    00246                    double & changeCost);
    00249   bool changeBound( int iSequence);
    00251   void originalBound(int iSequence);
    00254   int checkUnbounded(CoinIndexedVector * ray,CoinIndexedVector * spare,
    00255                      double changeCost);
    00265   void statusOfProblemInDual(int & lastCleaned, int type,
    00266                              double * givenDjs, ClpDataSave & saveData,
    00267                              int ifValuesPass);
    00269   void perturb();
    00275   int fastDual(bool alwaysFinish=false);
    00278   int numberAtFakeBound();
    00279
    00285   int pivotResult();
    00287   int nextSuperBasic();
    00290   int startupSolve(int ifValuesPass,double * saveDuals,int startFinishOptions);
    00291   void finishSolve(int startFinishOptions);
    00292   void gutsOfDual(int ifValuesPass,double * & saveDuals,int initialStatus,
    00293                   ClpDataSave & saveData);
    00294   //int dual2(int ifValuesPass,int startFinishOptions=0);
    00295   void resetFakeBounds();
    00296
    00298 };
    00299 #endif