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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Guido Tack <tack@gecode.org>
5 * Christian Schulte <schulte@gecode.org>
6 * Gabor Szokoli <szokoli@gecode.org>
7 *
8 * Copyright:
9 * Guido Tack, 2004
10 * Christian Schulte, 2004
11 * Gabor Szokoli, 2004
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/set.hh>
39#include <gecode/int.hh>
40
41namespace Gecode { namespace Set { namespace Int {
42
43 template<class View>
44 forceinline
45 Card<View>::Card(Home home, View y0, Gecode::Int::IntView y1)
46 : MixBinaryPropagator<View,PC_SET_CARD,
47 Gecode::Int::IntView,Gecode::Int::PC_INT_BND> (home, y0, y1) {}
48
49 template<class View>
50 forceinline ExecStatus
51 Card<View>::post(Home home, View x0, Gecode::Int::IntView x1) {
52 GECODE_ME_CHECK(x1.gq(home,0));
53 GECODE_ME_CHECK(x0.cardMax(home, Gecode::Int::Limits::max));
54 (void) new (home) Card(home,x0,x1);
55 return ES_OK;
56 }
57
58 template<class View>
59 forceinline
60 Card<View>::Card(Space& home, Card& p)
61 : MixBinaryPropagator<View,PC_SET_CARD,
62 Gecode::Int::IntView,Gecode::Int::PC_INT_BND> (home, p) {}
63
64 template<class View>
65 Actor*
66 Card<View>::copy(Space& home) {
67 return new (home) Card(home,*this);
68 }
69
70 template<class View>
71 ExecStatus
72 Card<View>::propagate(Space& home, const ModEventDelta&) {
73 int x1min, x1max;
74 do {
75 x1min = x1.min();
76 x1max = x1.max();
77 GECODE_ME_CHECK(x0.cardMin(home,static_cast<unsigned int>(x1min)));
78 GECODE_ME_CHECK(x0.cardMax(home,static_cast<unsigned int>(x1max)));
79 GECODE_ME_CHECK(x1.gq(home,static_cast<int>(x0.cardMin())));
80 GECODE_ME_CHECK(x1.lq(home,static_cast<int>(x0.cardMax())));
81 } while (x1.min() > x1min || x1.max() < x1max);
82 if (x1.assigned())
83 return home.ES_SUBSUMED(*this);
84 return ES_FIX;
85 }
86
87}}}
88
89// STATISTICS: set-prop