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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christopher Mears <Chris.Mears@monash.edu>
5 *
6 * Contributing authors:
7 * Christian Schulte <schulte@gecode.org>
8 *
9 * Copyright:
10 * Christopher Mears, 2011
11 * Christian Schulte, 2011
12 *
13 * This file is part of Gecode, the generic constraint
14 * development environment:
15 * http://www.gecode.org
16 *
17 * Permission is hereby granted, free of charge, to any person obtaining
18 * a copy of this software and associated documentation files (the
19 * "Software"), to deal in the Software without restriction, including
20 * without limitation the rights to use, copy, modify, merge, publish,
21 * distribute, sublicense, and/or sell copies of the Software, and to
22 * permit persons to whom the Software is furnished to do so, subject to
23 * the following conditions:
24 *
25 * The above copyright notice and this permission notice shall be
26 * included in all copies or substantial portions of the Software.
27 *
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
32 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
33 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
34 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 *
36 */
37
38#include <gecode/int/precede.hh>
39
40namespace Gecode {
41
42 void
43 precede(Home home, const IntVarArgs& x, int s, int t, IntPropLevel) {
44 using namespace Int;
45 Limits::check(s,"Int::precede");
46 Limits::check(t,"Int::precede");
47 GECODE_POST;
48
49 ViewArray<IntView> y(home, x);
50 GECODE_ES_FAIL(Precede::Single<IntView>::post(home, y, s, t));
51 }
52
53 void
54 precede(Home home, const IntVarArgs& x, const IntArgs& c, IntPropLevel) {
55 using namespace Int;
56 if (c.size() < 2)
57 return;
58 for (int i=c.size(); i--; )
59 Limits::check(c[i],"Int::precede");
60 GECODE_POST;
61
62 for (int i=c.size()-1; i--; ) {
63 ViewArray<IntView> y(home, x);
64 GECODE_ES_FAIL(Precede::Single<IntView>::post(home, y, c[i], c[i+1]));
65 }
66 }
67
68}
69
70// STATISTICS: int-post
71