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# /home/coin/svn-release/Smi-0.93.1/CoinUtils/src/CoinDenseFactorization.hpp

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    00001 /* $Id: CoinDenseFactorization.hpp 1448 2011-06-19 15:34:41Z stefan $ */
    00002 // Copyright (C) 2008, International Business Machines
    00003 // Corporation and others.  All Rights Reserved.
    00004 // This code is licensed under the terms of the Eclipse Public License (EPL).
    00005
    00006
    00007 /*
    00008    Authors
    00009
    00010    John Forrest
    00011
    00012  */
    00013 #ifndef CoinDenseFactorization_H
    00014 #define CoinDenseFactorization_H
    00015
    00016 #include <iostream>
    00017 #include <string>
    00018 #include <cassert>
    00019 #include "CoinTypes.hpp"
    00020 #include "CoinIndexedVector.hpp"
    00021 #include "CoinFactorization.hpp"
    00022 class CoinPackedMatrix;
    00024 class CoinOtherFactorization {
    00025
    00026 public:
    00027
    00030
    00031   CoinOtherFactorization (  );
    00033   CoinOtherFactorization ( const CoinOtherFactorization &other);
    00034
    00036   virtual ~CoinOtherFactorization (  );
    00038   CoinOtherFactorization & operator = ( const CoinOtherFactorization & other );
    00039
    00041   virtual CoinOtherFactorization * clone() const = 0;
    00043
    00046
    00047   inline int status (  ) const {
    00048     return status_;
    00049   }
    00051   inline void setStatus (  int value)
    00052   {  status_=value;  }
    00054   inline int pivots (  ) const {
    00055     return numberPivots_;
    00056   }
    00058   inline void setPivots (  int value )
    00059   { numberPivots_=value; }
    00061   inline void setNumberRows(int value)
    00062   { numberRows_ = value; }
    00064   inline int numberRows (  ) const {
    00065     return numberRows_;
    00066   }
    00068   inline int numberColumns (  ) const {
    00069     return numberColumns_;
    00070   }
    00072   inline int numberGoodColumns (  ) const {
    00073     return numberGoodU_;
    00074   }
    00076   inline void relaxAccuracyCheck(double value)
    00077   { relaxCheck_ = value;}
    00078   inline double getAccuracyCheck() const
    00079   { return relaxCheck_;}
    00081   inline int maximumPivots (  ) const {
    00082     return maximumPivots_ ;
    00083   }
    00085   virtual void maximumPivots (  int value );
    00086
    00088   inline double pivotTolerance (  ) const {
    00089     return pivotTolerance_ ;
    00090   }
    00091   void pivotTolerance (  double value );
    00093   inline double zeroTolerance (  ) const {
    00094     return zeroTolerance_ ;
    00095   }
    00096   void zeroTolerance (  double value );
    00097 #ifndef COIN_FAST_CODE
    00099   inline double slackValue (  ) const {
    00100     return slackValue_ ;
    00101   }
    00102   void slackValue (  double value );
    00103 #endif
    00105   virtual CoinFactorizationDouble * elements() const;
    00107   virtual int * pivotRow() const;
    00109   virtual CoinFactorizationDouble * workArea() const;
    00111   virtual int * intWorkArea() const;
    00113   virtual int * numberInRow() const;
    00115   virtual int * numberInColumn() const;
    00117   virtual CoinBigIndex * starts() const;
    00119   virtual int * permuteBack() const;
    00120
    00124   inline int solveMode() const
    00125   { return solveMode_ ;}
    00130   inline void setSolveMode(int value)
    00131   { solveMode_ = value;}
    00133   virtual bool wantsTableauColumn() const;
    00138   virtual void setUsefulInformation(const int * info,int whereFrom);
    00140   virtual void clearArrays() {}
    00142
    00144
    00145   virtual int * indices() const  = 0;
    00147   virtual int * permute() const = 0;
    00149   virtual int numberElements (  ) const = 0;
    00151
    00153
    00154   virtual void getAreas ( int numberRows,
    00155                   int numberColumns,
    00156                   CoinBigIndex maximumL,
    00157                   CoinBigIndex maximumU ) = 0;
    00158
    00160   virtual void preProcess ( ) = 0;
    00166   virtual int factor ( ) = 0;
    00168   virtual void postProcess(const int * sequence, int * pivotVariable) = 0;
    00170   virtual void makeNonSingular(int * sequence, int numberColumns) = 0;
    00172
    00175
    00183   virtual int replaceColumn ( CoinIndexedVector * regionSparse,
    00184                       int pivotRow,
    00185                       double pivotCheck ,
    00186                               bool checkBeforeModifying=false,
    00187                               double acceptablePivot=1.0e-8)=0;
    00189
    00199   virtual int updateColumnFT ( CoinIndexedVector * regionSparse,
    00200                                CoinIndexedVector * regionSparse2,
    00201                                bool noPermute=false) = 0;
    00204   virtual int updateColumn ( CoinIndexedVector * regionSparse,
    00205                      CoinIndexedVector * regionSparse2,
    00206                      bool noPermute=false) const = 0;
    00208     virtual int updateTwoColumnsFT(CoinIndexedVector * regionSparse1,
    00209                            CoinIndexedVector * regionSparse2,
    00210                            CoinIndexedVector * regionSparse3,
    00211                            bool noPermute=false) = 0;
    00216   virtual int updateColumnTranspose ( CoinIndexedVector * regionSparse,
    00217                               CoinIndexedVector * regionSparse2) const = 0;
    00219
    00221 protected:
    00222
    00225
    00226   double pivotTolerance_;
    00228   double zeroTolerance_;
    00229 #ifndef COIN_FAST_CODE
    00231   double slackValue_;
    00232 #else
    00233 #ifndef slackValue_
    00234 #define slackValue_ -1.0
    00235 #endif
    00236 #endif
    00238   double relaxCheck_;
    00240   CoinBigIndex factorElements_;
    00242   int numberRows_;
    00244   int numberColumns_;
    00246   int numberGoodU_;
    00248   int maximumPivots_;
    00250   int numberPivots_;
    00252   int status_;
    00254   int maximumRows_;
    00256   CoinBigIndex maximumSpace_;
    00258   int * pivotRow_;
    00259
    00263   CoinFactorizationDouble * elements_;
    00265   CoinFactorizationDouble * workArea_;
    00270   int solveMode_;
    00272 };
    00282 class CoinDenseFactorization : public CoinOtherFactorization {
    00283    friend void CoinDenseFactorizationUnitTest( const std::string & mpsDir );
    00284
    00285 public:
    00286
    00289
    00290   CoinDenseFactorization (  );
    00292   CoinDenseFactorization ( const CoinDenseFactorization &other);
    00293
    00295   virtual ~CoinDenseFactorization (  );
    00297   CoinDenseFactorization & operator = ( const CoinDenseFactorization & other );
    00299   virtual CoinOtherFactorization * clone() const ;
    00301
    00304
    00305   virtual void getAreas ( int numberRows,
    00306                   int numberColumns,
    00307                   CoinBigIndex maximumL,
    00308                   CoinBigIndex maximumU );
    00309
    00311   virtual void preProcess ( );
    00317   virtual int factor ( );
    00319   virtual void postProcess(const int * sequence, int * pivotVariable);
    00321   virtual void makeNonSingular(int * sequence, int numberColumns);
    00323
    00326
    00327   virtual inline int numberElements (  ) const {
    00328     return numberRows_*(numberColumns_+numberPivots_);
    00329   }
    00331   double maximumCoefficient() const;
    00333
    00336
    00344   virtual int replaceColumn ( CoinIndexedVector * regionSparse,
    00345                       int pivotRow,
    00346                       double pivotCheck ,
    00347                               bool checkBeforeModifying=false,
    00348                               double acceptablePivot=1.0e-8);
    00350
    00360   virtual inline int updateColumnFT ( CoinIndexedVector * regionSparse,
    00361                                       CoinIndexedVector * regionSparse2,
    00362                                       bool = false)
    00363   { return updateColumn(regionSparse,regionSparse2);}
    00366   virtual int updateColumn ( CoinIndexedVector * regionSparse,
    00367                      CoinIndexedVector * regionSparse2,
    00368                      bool noPermute=false) const;
    00370     virtual int updateTwoColumnsFT(CoinIndexedVector * regionSparse1,
    00371                            CoinIndexedVector * regionSparse2,
    00372                            CoinIndexedVector * regionSparse3,
    00373                            bool noPermute=false);
    00378   virtual int updateColumnTranspose ( CoinIndexedVector * regionSparse,
    00379                               CoinIndexedVector * regionSparse2) const;
    00381
    00382
    00386
    00387   inline void clearArrays()
    00388   { gutsOfDestructor();}
    00390   virtual inline int * indices() const
    00391   { return reinterpret_cast<int *> (elements_+numberRows_*numberRows_);}
    00393   virtual inline int * permute() const
    00394   { return NULL;/*pivotRow_*/;}
    00396
    00398   void gutsOfDestructor();
    00400   void gutsOfInitialize();
    00402   void gutsOfCopy(const CoinDenseFactorization &other);
    00403
    00405 protected:
    00408   int checkPivot(double saveFromU, double oldPivot) const;
    00410 protected:
    00411
    00414
    00415 };
    00416 #endif