Generated on Tue Jan 19 2021 06:15:49 for Gecode by doxygen 1.8.13
atmostOne.hpp
Go to the documentation of this file.
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 namespace Gecode { namespace Set { namespace Distinct {
35 
36  /*
37  * "AtMostOneIntersection" propagator
38  *
39  */
40 
43  : NaryPropagator<SetView, PC_SET_ANY>(home,x), c(_c) {}
44 
47  : NaryPropagator<SetView, PC_SET_ANY>(home,p), c(p.c) {}
48 
50  AtmostOne::post(Home home, ViewArray<SetView> x, unsigned int c) {
51  for (int i=x.size(); i--;) {
52  GECODE_ME_CHECK(x[i].cardMin(home, c));
53  GECODE_ME_CHECK(x[i].cardMax(home, c));
54  }
55 
56  (void) new (home) AtmostOne(home,x,c);
57  return ES_OK;
58  }
59 
60 }}}
61 
62 // STATISTICS: set-prop
Propagator for the AtMostOneIntersection constraint
Definition: distinct.hh:52
ViewArray< SetView > x
Array of views.
Definition: pattern.hpp:145
#define forceinline
Definition: config.hpp:185
Computation spaces.
Definition: core.hpp:1701
AtmostOne(Space &home, AtmostOne &p)
Constructor for cloning p.
Definition: atmostOne.hpp:46
Gecode::FloatVal c(-8, 8)
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
Gecode::IntArgs i({1, 2, 3, 4})
static ExecStatus post(Home home, ViewArray< SetView > x, unsigned int c)
Post propagator for and .
Definition: atmostOne.hpp:50
n-ary propagator
Definition: pattern.hpp:142
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition: macros.hpp:52
const Gecode::PropCond PC_SET_ANY
Propagate when any bound or the cardinality of a view changes.
Definition: var-type.hpp:248
unsigned int c
Cardinality of the sets.
Definition: distinct.hh:55
Set view for set variables
Definition: view.hpp:56
ExecStatus
Definition: core.hpp:471
Post propagator for SetVar x
Definition: set.hh:767
Execution is okay.
Definition: core.hpp:475
Gecode toplevel namespace
Multi _c(Gecode::IntArgs({1, 2, 3}))
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:1138
Home class for posting propagators
Definition: core.hpp:853