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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/set.hh>
35#include <gecode/search/relax.hh>
36
37namespace Gecode { namespace Set {
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, SetVar x, SetVar sx);
44 };
45
46 forceinline ExecStatus
47 Relax::operator ()(Home home, SetVar x, SetVar sx) {
48 SetView xv(x);
49 SetView sxv(sx);
50 SetVarGlbRanges l(sxv);
51 GECODE_ME_CHECK(xv.includeI(home, l));
52 SetVarLubRanges u(sxv);
53 GECODE_ME_CHECK(xv.intersectI(home, u));
54 return ES_OK;
55 }
56
57}}
58
59namespace Gecode {
60
61 void
62 relax(Home home, const SetVarArgs& x, const SetVarArgs& sx,
63 Rnd r, double p) {
64 if (x.size() != sx.size())
65 throw Set::ArgumentSizeMismatch("Set::relax");
66 if ((p < 0.0) || (p > 1.0))
67 throw Set::OutOfLimits("Set::relax");
68 Set::Relax ir;
69 Search::relax<SetVarArgs,Set::Relax>(home,x,sx,r,p,ir);
70 }
71
72}
73
74// STATISTICS: set-other
75