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val-commit.hpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
5  *
6  * Contributing authors:
7  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
8  *
9  * Copyright:
10  * Christian Schulte, 2012
11  * Vincent Barichard, 2012
12  *
13  * Last modified:
14  * $Date: 2012-10-02 15:49:50 +0200 (Tue, 02 Oct 2012) $ by $Author: schulte $
15  * $Revision: 13123 $
16  *
17  * This file is part of Gecode, the generic constraint
18  * development environment:
19  * http://www.gecode.org
20  *
21  * Permission is hereby granted, free of charge, to any person obtaining
22  * a copy of this software and associated documentation files (the
23  * "Software"), to deal in the Software without restriction, including
24  * without limitation the rights to use, copy, modify, merge, publish,
25  * distribute, sublicense, and/or sell copies of the Software, and to
26  * permit persons to whom the Software is furnished to do so, subject to
27  * the following conditions:
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30  * included in all copies or substantial portions of the Software.
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32  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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34  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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37  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
38  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
39  *
40  */
41 
42 namespace Gecode { namespace Float { namespace Branch {
43 
46  : ValCommit<FloatView,FloatNum>(home,vb) {}
49  : ValCommit<FloatView,FloatNum>(home,shared,vc) {}
51  ValCommitLq::commit(Space& home, unsigned int a, FloatView x, int,
52  FloatNum n) {
53  if (a == 0) {
54  if ((x.min() == n) || (x.max() == n))
55  return x.eq(home,x.min());
56  else
57  return x.lq(home,n);
58  } else {
59  if ((x.min() == n) || (x.max() == n))
60  return x.eq(home,x.max());
61  else
62  return x.gq(home,n);
63  }
64  }
65 
68  : ValCommit<FloatView,FloatNum>(home,vb) {}
71  : ValCommit<FloatView,FloatNum>(home,shared,vc) {}
73  ValCommitGq::commit(Space& home, unsigned int a, FloatView x, int,
74  FloatNum n) {
75  if (a == 0) {
76  if ((x.min() == n) || (x.max() == n))
77  return x.eq(home,x.max());
78  else
79  return x.gq(home,n);
80  } else {
81  if ((x.min() == n) || (x.max() == n))
82  return x.eq(home,x.min());
83  else
84  return x.lq(home,n);
85  }
86  }
87 
90  : ValCommit<FloatView,std::pair<FloatNum,bool> >(home,vb) {}
93  : ValCommit<FloatView,std::pair<FloatNum,bool> >(home,shared,vc) {}
95  ValCommitLqGq::commit(Space& home, unsigned int a, FloatView x, int,
96  Val nb) {
97  FloatNum& n = nb.first;
98  bool& b = nb.second;
99  if ((a == 0) == b) {
100  if ((x.min() == n) || (x.max() == n))
101  return x.eq(home,x.min());
102  else
103  return x.lq(home,n);
104  } else {
105  if ((x.min() == n) || (x.max() == n))
106  return x.eq(home,x.max());
107  else
108  return x.gq(home,n);
109  }
110  }
111 
112 }}}
113 
114 // STATISTICS: float-branch
115