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

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00001 /* $Id: CoinPresolveDoubleton.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 CoinPresolveDoubleton_H
00006 #define CoinPresolveDoubleton_H
00007 
00008 #define DOUBLETON       5
00009 
00025 class doubleton_action : public CoinPresolveAction {
00026  public:
00027   struct action {
00028 
00029     double clox;
00030     double cupx;
00031     double costx;
00032     
00033     double costy;
00034 
00035     double rlo;
00036 
00037     double coeffx;
00038     double coeffy;
00039 
00040     double *colel;
00041 
00042     int icolx;
00043     int icoly;
00044     int row;
00045     int ncolx;
00046     int ncoly;
00047   };
00048 
00049   const int nactions_;
00050   const action *const actions_;
00051 
00052  private:
00053   doubleton_action(int nactions,
00054                       const action *actions,
00055                       const CoinPresolveAction *next) :
00056     CoinPresolveAction(next),
00057     nactions_(nactions), actions_(actions)
00058 {}
00059 
00060  public:
00061   const char *name() const { return ("doubleton_action"); }
00062 
00063   static const CoinPresolveAction *presolve(CoinPresolveMatrix *,
00064                                          const CoinPresolveAction *next);
00065   
00066   void postsolve(CoinPostsolveMatrix *prob) const;
00067 
00068   ~doubleton_action();
00069 };
00070 #endif
00071 
00072 

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