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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
34#include <gecode/set/branch.hh>
35
36namespace Gecode { namespace Set { namespace Branch {
37
38 NGL*
39 IncNGL::copy(Space& home) {
40 return new (home) IncNGL(home,*this);
41 }
42 NGL::Status
43 IncNGL::status(const Space&) const {
44 // Is n in the glb(x)?
45 if (x.contains(n))
46 return NGL::SUBSUMED;
47 else
48 // Is n not in the lub(x)?
49 return x.notContains(n) ? NGL::FAILED : NGL::NONE;
50 }
51 ExecStatus
52 IncNGL::prune(Space& home) {
53 return me_failed(x.exclude(home,n)) ? ES_FAILED : ES_OK;
54 }
55
56
57 NGL*
58 ExcNGL::copy(Space& home) {
59 return new (home) ExcNGL(home,*this);
60 }
61 NGL::Status
62 ExcNGL::status(const Space&) const {
63 // Is n not in the lub(x)?
64 if (x.notContains(n))
65 return NGL::SUBSUMED;
66 else
67 // Is n in the lub(x)?
68 return x.contains(n) ? NGL::FAILED : NGL::NONE;
69 }
70 ExecStatus
71 ExcNGL::prune(Space& home) {
72 return me_failed(x.include(home,n)) ? ES_FAILED : ES_OK;
73 }
74
75}}}
76
77// STATISTICS: set-branch