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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, 2016
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/int.hh>
35#include <gecode/search/relax.hh>
36
37namespace Gecode { namespace Int {
38
39 /// Class for posting equalities for non-relaxed variables
40 class Relax {
41 public:
42 /// Post the actual equality for non-relaxed variables
43 ExecStatus operator ()(Home home, IntVar x, IntVar sx);
44 /// Post the actual equality for non-relaxed variables
45 ExecStatus operator ()(Home home, BoolVar x, BoolVar sx);
46 };
47
48 forceinline ExecStatus
49 Relax::operator ()(Home home, IntVar x, IntVar sx) {
50 IntView xv(x);
51 return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
52 }
53
54 forceinline ExecStatus
55 Relax::operator ()(Home home, BoolVar x, BoolVar sx) {
56 BoolView xv(x);
57 return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
58 }
59
60}}
61
62namespace Gecode {
63
64 void
65 relax(Home home, const IntVarArgs& x, const IntVarArgs& sx,
66 Rnd r, double p) {
67 if (x.size() != sx.size())
68 throw Int::ArgumentSizeMismatch("Int::relax");
69 if ((p < 0.0) || (p > 1.0))
70 throw Int::OutOfLimits("Int::relax");
71 Int::Relax ir;
72 Search::relax<IntVarArgs,Int::Relax>(home,x,sx,r,p,ir);
73 }
74
75 void
76 relax(Home home, const BoolVarArgs& x, const BoolVarArgs& sx,
77 Rnd r, double p) {
78 if (x.size() != sx.size())
79 throw Int::ArgumentSizeMismatch("Int::relax");
80 if ((p < 0.0) || (p > 1.0))
81 throw Int::OutOfLimits("Int::relax");
82 Int::Relax ir;
83 Search::relax<BoolVarArgs,Int::Relax>(home,x,sx,r,p,ir);
84 }
85
86}
87
88// STATISTICS: int-other
89