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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 *
6 * Copyright:
7 * Guido Tack, 2004
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#ifndef GECODE_SET_ATMOSTONE_HH
35#define GECODE_SET_ATMOSTONE_HH
36
37#include <gecode/set.hh>
38
39namespace Gecode { namespace Set { namespace Distinct {
40
41 /**
42 * \namespace Gecode::Set::Distinct
43 * \brief Propagators for global distinctness constraints
44 */
45
46 /**
47 * \brief %Propagator for the AtMostOneIntersection constraint
48 *
49 * Requires \code #include <gecode/set/distinct.hh> \endcode
50 * \ingroup FuncSetProp
51 */
52 class AtmostOne : public NaryPropagator<SetView, PC_SET_ANY> {
53 protected:
54 /// Cardinality of the sets
55 unsigned int c;
56 /// Constructor for cloning \a p
57 AtmostOne(Space& home, AtmostOne& p);
58 /// Constructor for posting
59 AtmostOne(Home home, ViewArray<SetView>&,unsigned int);
60 public:
61 /// Copy propagator during cloning
62 GECODE_SET_EXPORT virtual Actor* copy(Space& home);
63 /// Perform propagation
64 GECODE_SET_EXPORT virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
65 /// Post propagator for \f$\forall 0\leq i\leq |x| : |x_i|=c\f$ and \f$\forall 0\leq i<j\leq |x| : |x_i\cap x_j|\leq 1\f$
66 static ExecStatus post(Home home,ViewArray<SetView> x,unsigned int c);
67 };
68
69}}}
70
71#include <gecode/set/distinct/atmostOne.hpp>
72
73#endif
74
75// STATISTICS: set-prop