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CoinPresolveDupcol.hpp
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1 /* $Id: CoinPresolveDupcol.hpp 2083 2019-01-06 19:38:09Z unxusr $ */
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  }
60 
61 public:
62  const char *name() const;
63 
65  const CoinPresolveAction *next);
66 
67  void postsolve(CoinPostsolveMatrix *prob) const;
68 
69  virtual ~dupcol_action();
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  : CoinPresolveAction(NULL)
99  , nactions_(0)
100  , actions_(NULL)
101  {
102  }
103  duprow_action(int nactions,
104  const action *actions,
105  const CoinPresolveAction *next)
106  : CoinPresolveAction(next)
107  , nactions_(nactions)
108  , actions_(actions)
109  {
110  }
111 
112 public:
113  const char *name() const;
114 
115  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
116  const CoinPresolveAction *next);
117 
118  void postsolve(CoinPostsolveMatrix *prob) const;
119 
120  //~duprow_action() { delete[]actions_; }
121 };
122 
124  struct action {
125  int row;
126  double lbound;
127  double ubound;
128  };
129 
130  const int nactions_;
131  const action *const actions_;
132 
134  : CoinPresolveAction(NULL)
135  , nactions_(0)
136  , actions_(NULL)
137  {
138  }
139  duprow3_action(int nactions,
140  const action *actions,
141  const CoinPresolveAction *next)
142  : CoinPresolveAction(next)
143  , nactions_(nactions)
144  , actions_(actions)
145  {
146  }
147 
148 public:
149  const char *name() const;
150 
151  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
152  const CoinPresolveAction *next);
153 
154  void postsolve(CoinPostsolveMatrix *prob) const;
155 
156  //~duprow_action() { delete[]actions_; }
157 };
158 
170  struct action {
171  double rhs;
172  // last is row itself
174  double *rowels;
175  int *indices; // indices in gub row
176  int nDrop;
177  int ninrow;
178  };
179 
180  const int nactions_;
181  const action *const actions_;
182 
183  //gubrow_action():CoinPresolveAction(NULL),nactions_(0),actions_(NULL) {}
184  gubrow_action(int nactions,
185  const action *actions,
186  const CoinPresolveAction *next)
187  : CoinPresolveAction(next)
188  , nactions_(nactions)
189  , actions_(actions)
190  {
191  }
192 
193 public:
194  const char *name() const;
195 
196  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
197  const CoinPresolveAction *next);
198 
199  void postsolve(CoinPostsolveMatrix *prob) const;
200 
201  virtual ~gubrow_action();
202 };
203 
215  struct action {
216  double lbound_row;
217  double ubound_row;
218  double lbound_col;
219  double ubound_col;
220  double cost_col;
222  int row;
223  int col;
224  int othercol;
225  };
226 
227  const int nactions_;
228  const action *const actions_;
229 
231  : CoinPresolveAction(NULL)
232  , nactions_(0)
233  , actions_(NULL)
234  {
235  }
236  twoxtwo_action(int nactions,
237  const action *actions,
238  const CoinPresolveAction *next)
239  : CoinPresolveAction(next)
240  , nactions_(nactions)
241  , actions_(actions)
242  {
243  }
244 
245 public:
246  const char *name() const;
247 
248  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
249  const CoinPresolveAction *next);
250 
251  void postsolve(CoinPostsolveMatrix *prob) const;
252 
253  ~twoxtwo_action() { delete[] actions_; }
254 };
255 
256 #endif
257 
258 /* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
259 */
const action *const actions_
static const CoinPresolveAction * presolve(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
virtual ~dupcol_action()
Detect and remove entries whose sum is known.
static const CoinPresolveAction * presolve(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
Abstract base class of all presolve routines.
twoxtwo_action(int nactions, const action *actions, const CoinPresolveAction *next)
void postsolve(CoinPostsolveMatrix *prob) const
Apply the postsolve transformation for this particular presolve action.
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)
virtual ~gubrow_action()
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.
duprow3_action(int nactions, const action *actions, const CoinPresolveAction *next)
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 action *const actions_
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)
const char * name() const
A name for debug printing.