CoinUtils  2.9.10
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CoinPresolveDupcol.hpp
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1 /* $Id: CoinPresolveDupcol.hpp 1550 2012-08-28 14:55:18Z forrest $ */
2 // Copyright (C) 2002, International Business Machines
3 // Corporation and others. All Rights Reserved.
4 // This code is licensed under the terms of the Eclipse Public License (EPL).
5 
6 #ifndef CoinPresolveDupcol_H
7 #define CoinPresolveDupcol_H
8 
9 #include "CoinPresolveMatrix.hpp"
10 
15 #define DUPCOL 10
16 
33  dupcol_action();
34  dupcol_action(const dupcol_action& rhs);
36 
37  struct action {
38  double thislo;
39  double thisup;
40  double lastlo;
41  double lastup;
42  int ithis;
43  int ilast;
44 
45  double *colels;
46  int nincol;
47  };
48 
49  const int nactions_;
50  // actions_ is owned by the class and must be deleted at destruction
51  const action *const actions_;
52 
53  dupcol_action(int nactions, const action *actions,
54  const CoinPresolveAction *next) :
55  CoinPresolveAction(next),
56  nactions_(nactions),
57  actions_(actions) {}
58 
59  public:
60  const char *name() const;
61 
63  const CoinPresolveAction *next);
64 
65  void postsolve(CoinPostsolveMatrix *prob) const;
66 
67  virtual ~dupcol_action();
68 
69 };
70 
71 
88  struct action {
89  int row;
90  double lbound;
91  double ubound;
92  };
93 
94  const int nactions_;
95  const action *const actions_;
96 
98  duprow_action(int nactions,
99  const action *actions,
100  const CoinPresolveAction *next) :
101  CoinPresolveAction(next),
102  nactions_(nactions), actions_(actions) {}
103 
104  public:
105  const char *name() const;
106 
107  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
108  const CoinPresolveAction *next);
109 
110  void postsolve(CoinPostsolveMatrix *prob) const;
111 
112  //~duprow_action() { delete[]actions_; }
113 };
114 
126  struct action {
127  int row;
128  double lbound;
129  double ubound;
130  };
131 
132  const int nactions_;
133  const action *const actions_;
134 
136  gubrow_action(int nactions,
137  const action *actions,
138  const CoinPresolveAction *next) :
139  CoinPresolveAction(next),
140  nactions_(nactions), actions_(actions) {}
141 
142  public:
143  const char *name() const;
144 
145  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
146  const CoinPresolveAction *next);
147 
148  void postsolve(CoinPostsolveMatrix *prob) const;
149 
150  //~gubrow_action() { delete[]actions_; }
151 };
152 
164  struct action {
165  double lbound_row;
166  double ubound_row;
167  double lbound_col;
168  double ubound_col;
169  double cost_col;
171  int row;
172  int col;
173  int othercol;
174  };
175 
176  const int nactions_;
177  const action *const actions_;
178 
180  twoxtwo_action(int nactions,
181  const action *actions,
182  const CoinPresolveAction *next) :
183  CoinPresolveAction(next),
184  nactions_(nactions), actions_(actions) {}
185 
186  public:
187  const char *name() const;
188 
189  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
190  const CoinPresolveAction *next);
191 
192  void postsolve(CoinPostsolveMatrix *prob) const;
193 
194  ~twoxtwo_action() { delete [] actions_; }
195 };
196 
197 #endif
198 
const action *const actions_
static const CoinPresolveAction * presolve(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
virtual ~dupcol_action()
Detect and remove entries whose sum is known.
Abstract base class of all presolve routines.
twoxtwo_action(int nactions, const action *actions, const CoinPresolveAction *next)
const char * name() const
A name for debug printing.
Declarations for CoinPresolveMatrix and CoinPostsolveMatrix and their common base class CoinPrePostso...
void postsolve(CoinPostsolveMatrix *prob) const
Apply the postsolve transformation for this particular presolve action.
static const CoinPresolveAction * presolve(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
void postsolve(CoinPostsolveMatrix *prob) const
Apply the postsolve transformation for this particular presolve action.
const action *const actions_
const CoinPresolveAction * next
The next presolve transformation.
Augments CoinPrePostsolveMatrix with information about the problem that is only needed during postsol...
Detect and remove duplicate columns.
void postsolve(CoinPostsolveMatrix *prob) const
Apply the postsolve transformation for this particular presolve action.
Detect and remove duplicate rows.
void postsolve(CoinPostsolveMatrix *prob) const
Apply the postsolve transformation for this particular presolve action.
dupcol_action & operator=(const dupcol_action &rhs)
gubrow_action(int nactions, const action *actions, const CoinPresolveAction *next)
Augments CoinPrePostsolveMatrix with information about the problem that is only needed during presolv...
const char * name() const
A name for debug printing.
static const CoinPresolveAction * presolve(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
const action *const actions_
static const CoinPresolveAction * presolve(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
const char * name() const
A name for debug printing.
Detect interesting 2 by 2 blocks.
const action *const actions_
duprow_action(int nactions, const action *actions, const CoinPresolveAction *next)
const char * name() const
A name for debug printing.
dupcol_action(int nactions, const action *actions, const CoinPresolveAction *next)