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

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    00001 // Copyright (C) 2002, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003 #ifndef ClpPackedMatrix_H
    00004 #define ClpPackedMatrix_H
    00005
    00006 #include "CoinPragma.hpp"
    00007
    00008 #include "ClpMatrixBase.hpp"
    00009
    00016 class ClpPackedMatrix2;
    00017 class ClpPackedMatrix3;
    00018 class ClpPackedMatrix : public ClpMatrixBase {
    00019
    00020 public:
    00023
    00024   virtual CoinPackedMatrix * getPackedMatrix() const { return matrix_;}
    00026     virtual bool isColOrdered() const { return matrix_->isColOrdered(); }
    00028   virtual  CoinBigIndex getNumElements() const
    00029   { return matrix_->getNumElements(); }
    00031    virtual int getNumCols() const { return matrix_->getNumCols(); }
    00033   virtual int getNumRows() const { return matrix_->getNumRows(); }
    00034
    00039    virtual const double * getElements() const
    00040   { return matrix_->getElements();}
    00042   inline double * getMutableElements() const
    00043   { return matrix_->getMutableElements();}
    00049    virtual const int * getIndices() const
    00050   { return matrix_->getIndices();}
    00051
    00052    virtual const CoinBigIndex * getVectorStarts() const
    00053   { return matrix_->getVectorStarts();}
    00055    virtual const int * getVectorLengths() const
    00056   { return matrix_->getVectorLengths();}
    00058   virtual int getVectorLength(int index) const
    00059   { return matrix_->getVectorSize(index);}
    00060
    00062   virtual void deleteCols(const int numDel, const int * indDel);
    00064   virtual void deleteRows(const int numDel, const int * indDel);
    00065 #ifndef CLP_NO_VECTOR
    00067   virtual void appendCols(int number, const CoinPackedVectorBase * const * columns);
    00069   virtual void appendRows(int number, const CoinPackedVectorBase * const * rows);
    00070 #endif
    00071
    00075   virtual int appendMatrix(int number, int type,
    00076                            const CoinBigIndex * starts, const int * index,
    00077                            const double * element, int numberOther=-1);
    00082   virtual void replaceVector(const int index,
    00083                        const int numReplace, const double * newElements)
    00084       {matrix_->replaceVector(index,numReplace,newElements);}
    00088   virtual void modifyCoefficient(int row, int column, double newElement,
    00089                            bool keepZero=false)
    00090        {matrix_->modifyCoefficient(row, column, newElement, keepZero);}
    00092   virtual ClpMatrixBase * reverseOrderedCopy() const;
    00094   virtual CoinBigIndex countBasis(ClpSimplex * model,
    00095                                  const int * whichColumn,
    00096                                  int numberRowBasic,
    00097                                   int & numberColumnBasic);
    00099   virtual void fillBasis(ClpSimplex * model,
    00100                                  const int * whichColumn,
    00101                                  int & numberColumnBasic,
    00102                                  int * row, int * start,
    00103                                  int * rowCount, int * columnCount,
    00104                                  double * element);
    00107   virtual int scale(ClpModel * model, const ClpSimplex * baseModel=NULL) const ;
    00110   virtual void scaleRowCopy(ClpModel * model) const ;
    00112   void createScaledMatrix(ClpSimplex * model) const;
    00116   virtual ClpMatrixBase * scaledColumnCopy(ClpModel * model) const ;
    00127   virtual bool allElementsInRange(ClpModel * model,
    00128                                   double smallest, double largest,
    00129                                   int check=15);
    00133   virtual void rangeOfElements(double & smallestNegative, double & largestNegative,
    00134                        double & smallestPositive, double & largestPositive);
    00135
    00138   virtual void unpack(const ClpSimplex * model,CoinIndexedVector * rowArray,
    00139                    int column) const ;
    00144   virtual void unpackPacked(ClpSimplex * model,
    00145                             CoinIndexedVector * rowArray,
    00146                             int column) const;
    00149   virtual void add(const ClpSimplex * model,CoinIndexedVector * rowArray,
    00150                    int column, double multiplier) const ;
    00152   virtual void add(const ClpSimplex * model,double * array,
    00153                    int column, double multiplier) const;
    00155    virtual void releasePackedMatrix() const { }
    00160   virtual CoinBigIndex * dubiousWeights(const ClpSimplex * model,int * inputWeights) const;
    00162   virtual bool canDoPartialPricing() const;
    00164   virtual void partialPricing(ClpSimplex * model, double start, double end,
    00165                       int & bestSequence, int & numberWanted);
    00167   virtual int refresh(ClpSimplex * model);
    00168   // Really scale matrix
    00169   virtual void reallyScale(const double * rowScale, const double * columnScale);
    00175   virtual void setDimensions(int numrows, int numcols);
    00177
    00183   virtual void times(double scalar,
    00184                        const double * x, double * y) const;
    00186   virtual void times(double scalar,
    00187                      const double * x, double * y,
    00188                      const double * rowScale,
    00189                      const double * columnScale) const;
    00193     virtual void transposeTimes(double scalar,
    00194                                 const double * x, double * y) const;
    00196     virtual void transposeTimes(double scalar,
    00197                                 const double * x, double * y,
    00198                                 const double * rowScale,
    00199                                 const double * columnScale,
    00200                                 double * spare=NULL) const;
    00205   virtual void transposeTimes(const ClpSimplex * model, double scalar,
    00206                               const CoinIndexedVector * x,
    00207                               CoinIndexedVector * y,
    00208                               CoinIndexedVector * z) const;
    00213   void transposeTimesByColumn(const ClpSimplex * model, double scalar,
    00214                               const CoinIndexedVector * x,
    00215                               CoinIndexedVector * y,
    00216                               CoinIndexedVector * z) const;
    00222   virtual void transposeTimesByRow(const ClpSimplex * model, double scalar,
    00223                               const CoinIndexedVector * x,
    00224                               CoinIndexedVector * y,
    00225                               CoinIndexedVector * z) const;
    00229   virtual void subsetTransposeTimes(const ClpSimplex * model,
    00230                                     const CoinIndexedVector * x,
    00231                                     const CoinIndexedVector * y,
    00232                                     CoinIndexedVector * z) const;
    00235   virtual bool canCombine(const ClpSimplex * model,
    00236                           const CoinIndexedVector * pi) const;
    00238   virtual void transposeTimes2(const ClpSimplex * model,
    00239                                const CoinIndexedVector * pi1, CoinIndexedVector * dj1,
    00240                                const CoinIndexedVector * pi2, CoinIndexedVector * dj2,
    00241                                CoinIndexedVector * spare,
    00242                                double referenceIn, double devex,
    00243                                // Array for exact devex to say what is in reference framework
    00244                                unsigned int * reference,
    00245                                double * weights, double scaleFactor);
    00247   virtual void subsetTimes2(const ClpSimplex * model,
    00248                                 CoinIndexedVector * dj1,
    00249                                const CoinIndexedVector * pi2, CoinIndexedVector * dj2,
    00250                                double referenceIn, double devex,
    00251                                // Array for exact devex to say what is in reference framework
    00252                                unsigned int * reference,
    00253                                double * weights, double scaleFactor);
    00255   void useEffectiveRhs(ClpSimplex * model);
    00257
    00260
    00261   inline CoinPackedMatrix * matrix() const { return matrix_;}
    00265   inline void setMatrixNull()
    00266   { matrix_=NULL;}
    00268   inline void makeSpecialColumnCopy()
    00269   { flags_ |= 8;}
    00271   void releaseSpecialColumnCopy();
    00273   inline bool zeros() const
    00274   { return ((flags_&1)!=0);}
    00276   inline bool wantsSpecialColumnCopy() const
    00277   { return ((flags_&8)!=0);}
    00279
    00280
    00284    ClpPackedMatrix();
    00286    virtual ~ClpPackedMatrix();
    00288
    00292    ClpPackedMatrix(const ClpPackedMatrix&);
    00294    ClpPackedMatrix(const CoinPackedMatrix&);
    00297   ClpPackedMatrix (const ClpPackedMatrix & wholeModel,
    00298                     int numberRows, const int * whichRows,
    00299                     int numberColumns, const int * whichColumns);
    00300   ClpPackedMatrix (const CoinPackedMatrix & wholeModel,
    00301                     int numberRows, const int * whichRows,
    00302                     int numberColumns, const int * whichColumns);
    00303
    00305    ClpPackedMatrix(CoinPackedMatrix * matrix);
    00306
    00307    ClpPackedMatrix& operator=(const ClpPackedMatrix&);
    00309   virtual ClpMatrixBase * clone() const ;
    00311   virtual void copy(const ClpPackedMatrix * from);
    00314   virtual ClpMatrixBase * subsetClone (
    00315                     int numberRows, const int * whichRows,
    00316                     int numberColumns, const int * whichColumns) const ;
    00318   void specialRowCopy(ClpSimplex * model,const ClpMatrixBase * rowCopy);
    00320   void specialColumnCopy(ClpSimplex * model);
    00322   virtual void correctSequence(const ClpSimplex * model,int & sequenceIn, int & sequenceOut) ;
    00324 private:
    00326   void gutsOfTransposeTimesUnscaled(const double * pi,CoinIndexedVector * output, const double tolerance) const;
    00328   void gutsOfTransposeTimesScaled(const double * pi,const double * columnScale, CoinIndexedVector * output, const double tolerance) const;
    00330   void gutsOfTransposeTimesByRowGE3(const CoinIndexedVector * piVector, CoinIndexedVector * output,
    00331                                    CoinIndexedVector * spareVector, const double tolerance, const double scalar) const;
    00333   void gutsOfTransposeTimesByRowEQ2(const CoinIndexedVector * piVector, CoinIndexedVector * output,
    00334                                    CoinIndexedVector * spareVector, const double tolerance, const double scalar) const;
    00336   void gutsOfTransposeTimesByRowEQ1(const CoinIndexedVector * piVector, CoinIndexedVector * output,
    00337                                    const double tolerance, const double scalar) const;
    00339   void clearCopies();
    00340
    00341
    00342 protected:
    00344   void checkFlags() const;
    00348
    00349   CoinPackedMatrix * matrix_;
    00351   int numberActiveColumns_;
    00358   int flags_;
    00360   ClpPackedMatrix2 * rowCopy_;
    00362   ClpPackedMatrix3 * columnCopy_;
    00364 };
    00365 #ifdef THREAD
    00366 #include <pthread.h>
    00367 typedef struct {
    00368   double acceptablePivot;
    00369   const ClpSimplex * model;
    00370   double * spare;
    00371   int * spareIndex;
    00372   double * arrayTemp;
    00373   int * indexTemp;
    00374   int * numberInPtr;
    00375   double * bestPossiblePtr;
    00376   double * upperThetaPtr;
    00377   int * posFreePtr;
    00378   double * freePivotPtr;
    00379   int * numberOutPtr;
    00380   const unsigned short * count;
    00381   const double * pi;
    00382   const CoinBigIndex * rowStart;
    00383   const double * element;
    00384   const unsigned short * column;
    00385   int offset;
    00386   int numberInRowArray;
    00387   int numberLook;
    00388 } dualColumn0Struct;
    00389 #endif
    00390 class ClpPackedMatrix2 {
    00391
    00392 public:
    00398   void transposeTimes(const ClpSimplex * model,
    00399                       const CoinPackedMatrix * rowCopy,
    00400                       const CoinIndexedVector * x,
    00401                       CoinIndexedVector * spareArray,
    00402                       CoinIndexedVector * z) const;
    00404   inline bool usefulInfo() const
    00405   { return rowStart_!=NULL;}
    00407
    00408
    00412    ClpPackedMatrix2();
    00414    ClpPackedMatrix2(ClpSimplex * model,const CoinPackedMatrix * rowCopy);
    00416    virtual ~ClpPackedMatrix2();
    00418
    00422    ClpPackedMatrix2(const ClpPackedMatrix2&);
    00423    ClpPackedMatrix2& operator=(const ClpPackedMatrix2&);
    00425
    00426
    00427 protected:
    00431
    00432   int numberBlocks_;
    00434   int numberRows_;
    00436   int * offset_;
    00438   mutable unsigned short * count_;
    00440   mutable CoinBigIndex * rowStart_;
    00442   unsigned short * column_;
    00444   double * work_;
    00445 #ifdef THREAD
    00446   pthread_t * threadId_;
    00447   dualColumn0Struct * info_;
    00448 #endif
    00449
    00450 };
    00451 typedef struct {
    00452   CoinBigIndex startElements_; // point to data
    00453   int startIndices_; // point to column_
    00454   int numberInBlock_;
    00455   int numberPrice_; // at beginning
    00456   int numberElements_; // number elements per column
    00457 } blockStruct;
    00458 class ClpPackedMatrix3 {
    00459
    00460 public:
    00466   void transposeTimes(const ClpSimplex * model,
    00467                       const double * pi,
    00468                       CoinIndexedVector * output) const;
    00470   void transposeTimes2(const ClpSimplex * model,
    00471                        const double * pi, CoinIndexedVector * dj1,
    00472                        const double * piWeight,
    00473                        double referenceIn, double devex,
    00474                        // Array for exact devex to say what is in reference framework
    00475                        unsigned int * reference,
    00476                        double * weights, double scaleFactor);
    00478
    00479
    00483    ClpPackedMatrix3();
    00485    ClpPackedMatrix3(ClpSimplex * model,const CoinPackedMatrix * columnCopy);
    00487    virtual ~ClpPackedMatrix3();
    00489
    00493    ClpPackedMatrix3(const ClpPackedMatrix3&);
    00494    ClpPackedMatrix3& operator=(const ClpPackedMatrix3&);
    00496
    00499   void sortBlocks(const ClpSimplex * model);
    00501   void swapOne(const ClpSimplex * model,const ClpPackedMatrix * matrix,
    00502                 int iColumn);
    00504
    00505
    00506 protected:
    00510
    00511   int numberBlocks_;
    00513   int numberColumns_;
    00515   int * column_;
    00517   CoinBigIndex * start_;
    00519   int * row_;
    00521   double * element_;
    00523   blockStruct * block_;
    00525 };
    00526
    00527 #endif