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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2013
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34namespace Gecode { namespace Int { namespace Branch {
35
36 template<class View>
37 forceinline
38 EqNGL<View>::EqNGL(Space& home, View x, int n)
39 : ViewValNGL<View,int,PC_INT_VAL>(home,x,n) {}
40 template<class View>
41 forceinline
42 EqNGL<View>::EqNGL(Space& home, EqNGL& ngl)
43 : ViewValNGL<View,int,PC_INT_VAL>(home,ngl) {}
44 template<class View>
45 NGL*
46 EqNGL<View>::copy(Space& home) {
47 return new (home) EqNGL<View>(home,*this);
48 }
49 template<class View>
50 NGL::Status
51 EqNGL<View>::status(const Space&) const {
52 if (x.assigned())
53 return (x.val() == n) ? NGL::SUBSUMED : NGL::FAILED;
54 else
55 return x.in(n) ? NGL::NONE : NGL::FAILED;
56 }
57 template<class View>
58 ExecStatus
59 EqNGL<View>::prune(Space& home) {
60 return me_failed(x.nq(home,n)) ? ES_FAILED : ES_OK;
61 }
62
63
64 template<class View>
65 forceinline
66 NqNGL<View>::NqNGL(Space& home, View x, int n)
67 : ViewValNGL<View,int,PC_INT_DOM>(home,x,n) {}
68 template<class View>
69 forceinline
70 NqNGL<View>::NqNGL(Space& home, NqNGL& ngl)
71 : ViewValNGL<View,int,PC_INT_DOM>(home,ngl) {}
72 template<class View>
73 NGL*
74 NqNGL<View>::copy(Space& home) {
75 return new (home) NqNGL<View>(home,*this);
76 }
77 template<class View>
78 NGL::Status
79 NqNGL<View>::status(const Space&) const {
80 if (x.assigned())
81 return (x.val() == n) ? NGL::FAILED : NGL::SUBSUMED;
82 else
83 return x.in(n) ? NGL::NONE : NGL::SUBSUMED;
84 }
85 template<class View>
86 ExecStatus
87 NqNGL<View>::prune(Space& home) {
88 return me_failed(x.eq(home,n)) ? ES_FAILED : ES_OK;
89 }
90
91
92 template<class View>
93 forceinline
94 LqNGL<View>::LqNGL(Space& home, View x, int n)
95 : ViewValNGL<View,int,PC_INT_BND>(home,x,n) {}
96 template<class View>
97 forceinline
98 LqNGL<View>::LqNGL(Space& home, LqNGL& ngl)
99 : ViewValNGL<View,int,PC_INT_BND>(home,ngl) {}
100 template<class View>
101 NGL*
102 LqNGL<View>::copy(Space& home) {
103 return new (home) LqNGL<View>(home,*this);
104 }
105 template<class View>
106 NGL::Status
107 LqNGL<View>::status(const Space&) const {
108 if (x.max() <= n)
109 return NGL::SUBSUMED;
110 else if (x.min() > n)
111 return NGL::FAILED;
112 else
113 return NGL::NONE;
114 }
115 template<class View>
116 ExecStatus
117 LqNGL<View>::prune(Space& home) {
118 return me_failed(x.gr(home,n)) ? ES_FAILED : ES_OK;
119 }
120
121
122 template<class View>
123 forceinline
124 GqNGL<View>::GqNGL(Space& home, View x, int n)
125 : ViewValNGL<View,int,PC_INT_BND>(home,x,n) {}
126 template<class View>
127 forceinline
128 GqNGL<View>::GqNGL(Space& home, GqNGL& ngl)
129 : ViewValNGL<View,int,PC_INT_BND>(home,ngl) {}
130 template<class View>
131 NGL*
132 GqNGL<View>::copy(Space& home) {
133 return new (home) GqNGL<View>(home,*this);
134 }
135 template<class View>
136 NGL::Status
137 GqNGL<View>::status(const Space&) const {
138 if (x.min() >= n)
139 return NGL::SUBSUMED;
140 else if (x.max() < n)
141 return NGL::FAILED;
142 else
143 return NGL::NONE;
144 }
145 template<class View>
146 ExecStatus
147 GqNGL<View>::prune(Space& home) {
148 return me_failed(x.le(home,n)) ? ES_FAILED : ES_OK;
149 }
150
151}}}
152
153// STATISTICS: int-branch