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# /home/coin/svn-release/Alps-1.4.5/CoinUtils/src/CoinPresolveImpliedFree.hpp

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    00001 /* $Id: CoinPresolveImpliedFree.hpp 1562 2012-11-24 00:36:15Z lou $ */
    00002 // Copyright (C) 2002, 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 #ifndef CoinPresolveImpliedFree_H
    00007 #define CoinPresolveInpliedFree_H
    00008
    00013 #define IMPLIED_FREE    9
    00014
    00029 class implied_free_action : public CoinPresolveAction {
    00030   struct action {
    00031     int row, col;
    00032     double clo, cup;
    00033     double rlo, rup;
    00034     const double *rowels;
    00035     const double *costs;
    00036     int ninrow;
    00037   };
    00038
    00039   const int nactions_;
    00040   const action *const actions_;
    00041
    00042   implied_free_action(int nactions,
    00043                       const action *actions,
    00044                       const CoinPresolveAction *next) :
    00045     CoinPresolveAction(next),
    00046     nactions_(nactions), actions_(actions) {}
    00047
    00048  public:
    00049   const char *name() const;
    00050
    00051   static const CoinPresolveAction *presolve(CoinPresolveMatrix * prob,
    00052                                          const CoinPresolveAction *next,
    00053                                         int & fillLevel);
    00054
    00055   void postsolve(CoinPostsolveMatrix *prob) const;
    00056
    00057   virtual ~implied_free_action();
    00058 };
    00059
    00060 #endif