Generated on Sat Oct 20 2018 12:43:45 for Gecode by doxygen 1.8.13
precede.cpp
Go to the documentation of this file.
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 
40 namespace 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");
48 
49  ViewArray<IntView> y(home, x);
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");
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 
NodeType t
Type of node.
Definition: bool-expr.cpp:230
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:1569
Gecode::FloatVal c(-8, 8)
Gecode::IntArgs i({1, 2, 3, 4})
Passing integer variables.
Definition: int.hh:656
Passing integer arguments.
Definition: int.hh:628
IntPropLevel
Propagation levels for integer propagators.
Definition: int.hh:974
Post propagator for SetVar SetOpType SetVar y
Definition: set.hh:767
void precede(Home home, const IntVarArgs &x, int s, int t, IntPropLevel)
Post propagator that s precedes t in x.
Definition: precede.cpp:43
Post propagator for SetVar x
Definition: set.hh:767
Single value precedence propagator.
Definition: precede.hh:61
Gecode toplevel namespace
#define GECODE_POST
Check for failure in a constraint post function.
Definition: macros.hpp:40
void check(int n, const char *l)
Check whether n is in range, otherwise throw out of limits with information l.
Definition: limits.hpp:46
Home class for posting propagators
Definition: core.hpp:853
#define GECODE_ES_FAIL(es)
Check whether execution status es is failed, and fail space home.
Definition: macros.hpp:103