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# /home/coin/SVN-release/Alps-1.2.1/CoinUtils/src/CoinPresolveImpliedFree.hpp

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    00001 /* $Id: CoinPresolveImpliedFree.hpp 1191 2009-07-25 08:38:12Z forrest $ */
    00002 // Copyright (C) 2002, International Business Machines
    00003 // Corporation and others.  All Rights Reserved.
    00004
    00005 #ifndef CoinPresolveImpliedFree_H
    00006 #define CoinPresolveInpliedFree_H
    00007
    00012 #define IMPLIED_FREE    9
    00013
    00028 class implied_free_action : public CoinPresolveAction {
    00029   struct action {
    00030     int row, col;
    00031     double clo, cup;
    00032     double rlo, rup;
    00033     const double *rowels;
    00034     const double *costs;
    00035     int ninrow;
    00036   };
    00037
    00038   const int nactions_;
    00039   const action *const actions_;
    00040
    00041   implied_free_action(int nactions,
    00042                       const action *actions,
    00043                       const CoinPresolveAction *next) :
    00044     CoinPresolveAction(next),
    00045     nactions_(nactions), actions_(actions) {}
    00046
    00047  public:
    00048   const char *name() const;
    00049
    00050   static const CoinPresolveAction *presolve(CoinPresolveMatrix * prob,
    00051                                          const CoinPresolveAction *next,
    00052                                         int & fillLevel);
    00053
    00054   void postsolve(CoinPostsolveMatrix *prob) const;
    00055
    00056   ~implied_free_action();
    00057 };
    00058
    00059 #endif