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/build/buildd/coinutils-2.6.4/CoinUtils/src/CoinPresolveImpliedFree.hpp

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00001 /* $Id: CoinPresolveImpliedFree.hpp 1215 2009-11-05 11:03:04Z 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

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