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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/float.hh>
35#include <gecode/search/relax.hh>
36
37namespace Gecode { namespace Float {
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, FloatVar x, FloatVar sx);
44 };
45
46 forceinline ExecStatus
47 Relax::operator ()(Home home, FloatVar x, FloatVar sx) {
48 FloatView xv(x);
49 return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
50 }
51
52}}
53
54namespace Gecode {
55
56 void
57 relax(Home home, const FloatVarArgs& x, const FloatVarArgs& sx,
58 Rnd r, double p) {
59 if (x.size() != sx.size())
60 throw Float::ArgumentSizeMismatch("Float::relax");
61 if ((p < 0.0) || (p > 1.0))
62 throw Float::OutOfLimits("Float::relax");
63 Float::Relax fr;
64 Search::relax<FloatVarArgs,Float::Relax>(home,x,sx,r,p,fr);
65 }
66
67}
68
69// STATISTICS: float-other
70