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/build/buildd/clp-1.11.1/Clp/src/ClpSimplexOther.hpp

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00001 /* $Id: ClpSimplexOther.hpp 1458 2009-11-05 12:34:07Z forrest $ */
00002 // Copyright (C) 2004, International Business Machines
00003 // Corporation and others.  All Rights Reserved.
00004 
00005 /* 
00006    Authors
00007    
00008    John Forrest
00009 
00010  */
00011 #ifndef ClpSimplexOther_H
00012 #define ClpSimplexOther_H
00013 
00014 #include "ClpSimplex.hpp"
00015 
00023 class ClpSimplexOther : public ClpSimplex {
00024 
00025 public:
00026 
00049   void dualRanging(int numberCheck,const int * which,
00050                    double * costIncrease, int * sequenceIncrease,
00051                    double * costDecrease, int * sequenceDecrease,
00052                    double * valueIncrease=NULL, double * valueDecrease=NULL);
00067   void primalRanging(int numberCheck,const int * which,
00068                   double * valueIncrease, int * sequenceIncrease,
00069                   double * valueDecrease, int * sequenceDecrease);
00083   int parametrics(double startingTheta, double & endingTheta,double reportIncrement,
00084                   const double * changeLowerBound, const double * changeUpperBound,
00085                   const double * changeLowerRhs, const double * changeUpperRhs,
00086                   const double * changeObjective);
00087 private:
00096   int parametricsLoop(double startingTheta, double & endingTheta,double reportIncrement,
00097                       const double * changeLower, const double * changeUpper,
00098                       const double * changeObjective, ClpDataSave & data,
00099                       bool canTryQuick);
00107   void statusOfProblemInParametrics(int type,ClpDataSave & saveData);
00118   int whileIterating(double startingTheta, double & endingTheta,double reportIncrement,
00119                       const double * changeLower, const double * changeUpper,
00120                       const double * changeObjective);
00125   int nextTheta(int type, double maxTheta, double * primalChange, double * dualChange,
00126                       const double * changeLower, const double * changeUpper,
00127                       const double * changeObjective);
00133   void checkDualRatios(CoinIndexedVector * rowArray,
00134                    CoinIndexedVector * columnArray,
00135                        double & costIncrease, int & sequenceIncrease, double & alphaIncrease,
00136                        double & costDecrease, int & sequenceDecrease, double & alphaDecrease);
00141   void checkPrimalRatios(CoinIndexedVector * rowArray,
00142                          int direction);
00144   double primalRanging1(int whichIn, int whichOther);
00145 
00146 public:
00161     int writeBasis(const char *filename,
00162                  bool writeValues=false,
00163                  int formatType=0) const;
00165     int readBasis(const char *filename);
00171   ClpSimplex * dualOfModel(double fractionRowRanges=1.0,double fractionColumnRanges=1.0) const;
00175   int restoreFromDual(const ClpSimplex * dualProblem);
00179   ClpSimplex * crunch(double * rhs, int * whichRows, int * whichColumns,
00180                       int & nBound, bool moreBounds=false, bool tightenBounds=false);
00184   void afterCrunch(const ClpSimplex & small,
00185                    const int * whichRows, const int * whichColumns,
00186                    int nBound);
00188   void cleanupAfterPostsolve();
00191   int tightenIntegerBounds(double * rhsSpace); 
00202   int expandKnapsack(int knapsackRow, int & numberOutput,
00203                      double * buildObj, CoinBigIndex * buildStart,
00204                      int * buildRow, double * buildElement,int reConstruct=-1) const;
00206 };
00207 #endif

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