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

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    00001 // Copyright (C) 2002, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003 #ifndef ClpMatrixBase_H
    00004 #define ClpMatrixBase_H
    00005
    00006 #include "CoinPragma.hpp"
    00007
    00008 #include "CoinPackedMatrix.hpp"
    00009 class CoinIndexedVector;
    00010 class ClpSimplex;
    00011 class ClpModel;
    00012
    00026 class ClpMatrixBase  {
    00027
    00028 public:
    00031
    00032   virtual CoinPackedMatrix * getPackedMatrix() const = 0;
    00034   virtual bool isColOrdered() const = 0;
    00036   virtual CoinBigIndex getNumElements() const = 0;
    00038   virtual int getNumCols() const = 0;
    00040   virtual int getNumRows() const = 0;
    00041
    00046   virtual const double * getElements() const = 0;
    00052   virtual const int * getIndices() const = 0;
    00053
    00054   virtual const CoinBigIndex * getVectorStarts() const = 0;
    00056   virtual const int * getVectorLengths() const = 0 ;
    00058   virtual int getVectorLength(int index) const ;
    00060   virtual void deleteCols(const int numDel, const int * indDel) = 0;
    00062   virtual void deleteRows(const int numDel, const int * indDel) = 0;
    00063 #ifndef CLP_NO_VECTOR
    00065   virtual void appendCols(int number, const CoinPackedVectorBase * const * columns);
    00067   virtual void appendRows(int number, const CoinPackedVectorBase * const * rows);
    00068 #endif
    00069
    00072   virtual void modifyCoefficient(int row, int column, double newElement,
    00073                                  bool keepZero=false);
    00078   virtual int appendMatrix(int number, int type,
    00079                            const CoinBigIndex * starts, const int * index,
    00080                            const double * element, int numberOther=-1);
    00081
    00084   virtual ClpMatrixBase * reverseOrderedCopy() const {return NULL;}
    00085
    00087   virtual CoinBigIndex countBasis(ClpSimplex * model,
    00088                                  const int * whichColumn,
    00089                                  int numberRowBasic,
    00090                                   int & numberColumnBasic)=0;
    00092   virtual void fillBasis(ClpSimplex * model,
    00093                                  const int * whichColumn,
    00094                                  int & numberColumnBasic,
    00095                                  int * row, int * start,
    00096                                  int * rowCount, int * columnCount,
    00097                                  double * element)=0;
    00101   virtual int scale(ClpModel * model, const ClpSimplex * baseModel=NULL) const
    00102   { return 1;}
    00105   virtual void scaleRowCopy(ClpModel * model) const
    00106   { }
    00108   virtual bool canGetRowCopy() const
    00109   { return true;}
    00113   inline virtual ClpMatrixBase * scaledColumnCopy(ClpModel * model) const
    00114   { return this->clone();}
    00115
    00126   virtual bool allElementsInRange(ClpModel * model,
    00127                                   double smallest, double largest,
    00128                                   int check=15)
    00129   { return true;}
    00135   virtual void setDimensions(int numrows, int numcols);
    00139   virtual void rangeOfElements(double & smallestNegative, double & largestNegative,
    00140                                double & smallestPositive, double & largestPositive);
    00141
    00144   virtual void unpack(const ClpSimplex * model,CoinIndexedVector * rowArray,
    00145                       int column) const =0;
    00150   virtual void unpackPacked(ClpSimplex * model,
    00151                             CoinIndexedVector * rowArray,
    00152                             int column) const =0;
    00157   virtual int refresh(ClpSimplex * model)
    00158   { return 0;}
    00159
    00160   // Really scale matrix
    00161   virtual void reallyScale(const double * rowScale, const double * columnScale);
    00167   virtual CoinBigIndex * dubiousWeights(const ClpSimplex * model,int * inputWeights) const;
    00170   virtual void add(const ClpSimplex * model,CoinIndexedVector * rowArray,
    00171                    int column, double multiplier) const =0;
    00173   virtual void add(const ClpSimplex * model,double * array,
    00174                    int column, double multiplier) const =0;
    00176   virtual void releasePackedMatrix() const =0;
    00178   virtual bool canDoPartialPricing() const;
    00180   virtual int hiddenRows() const;
    00182   virtual void partialPricing(ClpSimplex * model, double start, double end,
    00183                               int & bestSequence, int & numberWanted);
    00193   virtual int extendUpdated(ClpSimplex * model,CoinIndexedVector * update,int mode);
    00200   virtual void primalExpanded(ClpSimplex * model,int mode);
    00210   virtual void dualExpanded(ClpSimplex * model,CoinIndexedVector * array,
    00211                             double * other,int mode);
    00231   virtual int generalExpanded(ClpSimplex * model,int mode,int & number);
    00235   virtual int updatePivot(ClpSimplex * model,double oldInValue, double oldOutValue);
    00239   virtual void createVariable(ClpSimplex * model, int & bestSequence);
    00242   virtual int checkFeasible(ClpSimplex * model,double & sum) const ;
    00244   double reducedCost(ClpSimplex * model,int sequence) const;
    00246   virtual void correctSequence(const ClpSimplex * model,int & sequenceIn, int & sequenceOut) ;
    00248
    00249   //---------------------------------------------------------------------------
    00257   virtual void times(double scalar,
    00258                      const double * x, double * y) const=0;
    00262   virtual void times(double scalar,
    00263                      const double * x, double * y,
    00264                      const double * rowScale,
    00265                      const double * columnScale) const;
    00269   virtual void transposeTimes(double scalar,
    00270                               const double * x, double * y) const = 0;
    00274   virtual void transposeTimes(double scalar,
    00275                               const double * x, double * y,
    00276                               const double * rowScale,
    00277                               const double * columnScale,
    00278                               double * spare=NULL) const;
    00283   virtual void transposeTimes(const ClpSimplex * model, double scalar,
    00284                               const CoinIndexedVector * x,
    00285                               CoinIndexedVector * y,
    00286                               CoinIndexedVector * z) const = 0;
    00291   virtual void subsetTransposeTimes(const ClpSimplex * model,
    00292                                     const CoinIndexedVector * x,
    00293                                     const CoinIndexedVector * y,
    00294                                     CoinIndexedVector * z) const = 0;
    00297   virtual bool canCombine(const ClpSimplex * model,
    00298                           const CoinIndexedVector * pi) const {return false;}
    00300   virtual void transposeTimes2(const ClpSimplex * model,
    00301                                const CoinIndexedVector * pi1, CoinIndexedVector * dj1,
    00302                                const CoinIndexedVector * pi2, CoinIndexedVector * dj2,
    00303                                CoinIndexedVector * spare,
    00304                                double referenceIn, double devex,
    00305                                // Array for exact devex to say what is in reference framework
    00306                                unsigned int * reference,
    00307                                double * weights, double scaleFactor);
    00309   virtual void subsetTimes2(const ClpSimplex * model,
    00310                             CoinIndexedVector * dj1,
    00311                                const CoinIndexedVector * pi2, CoinIndexedVector * dj2,
    00312                                double referenceIn, double devex,
    00313                                // Array for exact devex to say what is in reference framework
    00314                                unsigned int * reference,
    00315                                double * weights, double scaleFactor);
    00320   virtual void listTransposeTimes(const ClpSimplex * model,
    00321                                   double * x,
    00322                                   int * y,
    00323                                   int number,
    00324                                   double * z) const;
    00326
    00327
    00328
    00329   virtual ClpMatrixBase * clone() const = 0;
    00334   virtual ClpMatrixBase * subsetClone (
    00335                                        int numberRows, const int * whichRows,
    00336                                        int numberColumns, const int * whichColumns) const;
    00338   virtual void backToBasics() {}
    00345   inline int type() const
    00346   { return type_;}
    00348   void setType(int type) {type_=type;}
    00350   void useEffectiveRhs(ClpSimplex * model);
    00354   virtual double * rhsOffset(ClpSimplex * model,bool forceRefresh=false,
    00355                                 bool check=false);
    00357   inline int lastRefresh() const
    00358   { return lastRefresh_;}
    00360   inline int refreshFrequency() const
    00361   { return refreshFrequency_;}
    00362   inline void setRefreshFrequency(int value)
    00363   { refreshFrequency_=value;}
    00365   inline bool skipDualCheck() const
    00366   { return skipDualCheck_;}
    00367   inline void setSkipDualCheck(bool yes)
    00368   { skipDualCheck_=yes;}
    00371   inline int minimumObjectsScan() const
    00372   { return minimumObjectsScan_;}
    00373   inline void setMinimumObjectsScan(int value)
    00374   { minimumObjectsScan_=value;}
    00376   inline int minimumGoodReducedCosts() const
    00377   { return minimumGoodReducedCosts_;}
    00378   inline void setMinimumGoodReducedCosts(int value)
    00379   { minimumGoodReducedCosts_=value;}
    00381   inline double startFraction() const
    00382   { return startFraction_;}
    00383   inline void setStartFraction(double value)
    00384   { startFraction_ = value;}
    00386   inline double endFraction() const
    00387   { return endFraction_;}
    00388   inline void setEndFraction(double value)
    00389   { endFraction_ = value;}
    00391   inline double savedBestDj() const
    00392   { return savedBestDj_;}
    00393   inline void setSavedBestDj(double value)
    00394   { savedBestDj_ = value;}
    00396   inline int originalWanted() const
    00397   { return originalWanted_;}
    00398   inline void setOriginalWanted(int value)
    00399   { originalWanted_ = value;}
    00401   inline int currentWanted() const
    00402   { return currentWanted_;}
    00403   inline void setCurrentWanted(int value)
    00404   { currentWanted_ = value;}
    00406   inline int savedBestSequence() const
    00407   { return savedBestSequence_;}
    00408   inline void setSavedBestSequence(int value)
    00409   { savedBestSequence_ = value;}
    00411
    00412
    00413 protected:
    00414
    00420   ClpMatrixBase();
    00422 public:
    00423   virtual ~ClpMatrixBase();
    00424 protected:
    00425   // Copy
    00426   ClpMatrixBase(const ClpMatrixBase&);
    00427   // Assignment
    00428   ClpMatrixBase& operator=(const ClpMatrixBase&);
    00430
    00431
    00432 protected:
    00439   double * rhsOffset_;
    00441   double startFraction_;
    00443   double endFraction_;
    00445   double savedBestDj_;
    00447   int originalWanted_;
    00449   int currentWanted_;
    00451   int savedBestSequence_;
    00453   int type_;
    00455   int lastRefresh_;
    00457   int refreshFrequency_;
    00459   int minimumObjectsScan_;
    00461   int minimumGoodReducedCosts_;
    00463   int trueSequenceIn_;
    00465   int trueSequenceOut_;
    00467   bool skipDualCheck_;
    00469 };
    00470 // bias for free variables
    00471 #define FREE_BIAS 1.0e1
    00472 // Acceptance criteria for free variables
    00473 #define FREE_ACCEPT 1.0e2
    00474
    00475 #endif