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# /home/coin/SVN-release/DyLP-1.5.0/CoinUtils/src/CoinPresolveImpliedFree.hpp

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    00001 // Copyright (C) 2002, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003
    00004 #ifndef CoinPresolveImpliedFree_H
    00005 #define CoinPresolveInpliedFree_H
    00006
    00011 #define IMPLIED_FREE    9
    00012
    00027 class implied_free_action : public CoinPresolveAction {
    00028   struct action {
    00029     int row, col;
    00030     double clo, cup;
    00031     double rlo, rup;
    00032     const double *rowels;
    00033     const double *costs;
    00034     int ninrow;
    00035   };
    00036
    00037   const int nactions_;
    00038   const action *const actions_;
    00039
    00040   implied_free_action(int nactions,
    00041                       const action *actions,
    00042                       const CoinPresolveAction *next) :
    00043     CoinPresolveAction(next),
    00044     nactions_(nactions), actions_(actions) {}
    00045
    00046  public:
    00047   const char *name() const;
    00048
    00049   static const CoinPresolveAction *presolve(CoinPresolveMatrix * prob,
    00050                                          const CoinPresolveAction *next,
    00051                                         int & fillLevel);
    00052
    00053   void postsolve(CoinPostsolveMatrix *prob) const;
    00054
    00055   ~implied_free_action();
    00056 };
    00057
    00058 #endif