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# /home/coin/SVN-release/Osi-0.98.1/CoinUtils/src/CoinPresolveTripleton.hpp

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    00001 // Copyright (C) 2003, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003
    00004 #ifndef CoinPresolveTripleton_H
    00005 #define CoinPresolveTripleton_H
    00006 #define TRIPLETON 11
    00007
    00012 class tripleton_action : public CoinPresolveAction {
    00013  public:
    00014   struct action {
    00015     int icolx;
    00016     int icolz;
    00017     int row;
    00018
    00019     int icoly;
    00020     double cloy;
    00021     double cupy;
    00022     double costy;
    00023     double clox;
    00024     double cupx;
    00025     double costx;
    00026
    00027     double rlo;
    00028     double rup;
    00029
    00030     double coeffx;
    00031     double coeffy;
    00032     double coeffz;
    00033
    00034     double *colel;
    00035
    00036     int ncolx;
    00037     int ncoly;
    00038   };
    00039
    00040   const int nactions_;
    00041   const action *const actions_;
    00042
    00043  private:
    00044   tripleton_action(int nactions,
    00045                       const action *actions,
    00046                       const CoinPresolveAction *next) :
    00047     CoinPresolveAction(next),
    00048     nactions_(nactions), actions_(actions)
    00049 {}
    00050
    00051  public:
    00052   const char *name() const { return ("tripleton_action"); }
    00053
    00054   static const CoinPresolveAction *presolve(CoinPresolveMatrix *,
    00055                                          const CoinPresolveAction *next);
    00056
    00057   void postsolve(CoinPostsolveMatrix *prob) const;
    00058
    00059   ~tripleton_action();
    00060 };
    00061 #endif
    00062
    00063