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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, 2015
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 <algorithm>
35
36namespace Gecode { namespace Int { namespace Distinct {
37
38 forceinline
39 EqIte::EqIte(Home home, IntView x0, IntView x1, int d0, int d1)
40 : BinaryPropagator<IntView,PC_INT_DOM>(home,x0,x1), c0(d0), c1(d1) {}
41
42 forceinline
43 EqIte::EqIte(Space& home, EqIte& p)
44 : BinaryPropagator<IntView,PC_INT_DOM>(home,p),
45 c0(p.c0), c1(p.c1) {}
46
47
48 inline ExecStatus
49 EqIte::post(Home home, IntView x0, IntView x1, int c0, int c1) {
50 assert(!(x0.assigned() && (x0.val() == c0)) && x0.in(c0));
51 GECODE_ME_CHECK(x1.lq(home,std::max(x0.max(),c1)));
52 GECODE_ME_CHECK(x1.gq(home,std::min(x0.min(),c1)));
53 (void) new (home) EqIte(home,x0,x1,c0,c1);
54 return ES_OK;
55 }
56
57}}}
58
59// STATISTICS: int-prop