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precede.cpp
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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  * Guido Tack <tack@gecode.org>
9  *
10  * Copyright:
11  * Christopher Mears, 2011
12  * Christian Schulte, 2011
13  * Guido Tack, 2011
14  *
15  * Last modified:
16  * $Date: 2016-05-23 22:18:23 +0200 (Mon, 23 May 2016) $ by $Author: schulte $
17  * $Revision: 15073 $
18  *
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43 
44 #include <gecode/set/precede.hh>
45 
46 namespace Gecode {
47 
48  void
49  precede(Home home, const SetVarArgs& x, int s, int t) {
50  using namespace Set;
51  Limits::check(s,"Set::precede");
52  Limits::check(t,"Set::precede");
54 
55  ViewArray<SetView> y(home, x);
57  }
58 
59  void
60  precede(Home home, const SetVarArgs& x, const IntArgs& c) {
61  using namespace Set;
62  if (c.size() < 2)
63  return;
64  for (int i=c.size(); i--; )
65  Limits::check(c[i],"Set::precede");
67 
68  for (int i=c.size()-1; i--; ) {
69  ViewArray<SetView> y(home, x);
70  GECODE_ES_FAIL(Precede::Single<SetView>::post(home, y, c[i], c[i+1]));
71  }
72  }
73 
74 }
75 
76 // STATISTICS: set-post
NodeType t
Type of node.
Definition: bool-expr.cpp:234
void check(int n, const char *l)
Check whether integer n is in range, otherwise throw overflow exception with information l...
Definition: limits.hpp:41
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:1669
Gecode::FloatVal c(-8, 8)
Gecode::IntArgs i(4, 1, 2, 3, 4)
Passing integer arguments.
Definition: int.hh:610
Passing set variables.
Definition: set.hh:492
Post propagator for SetVar SetOpType SetVar y
Definition: set.hh:784
void precede(Home home, const IntVarArgs &x, int s, int t, IntPropLevel)
Post propagator that s precedes t in x.
Definition: precede.cpp:47
Post propagator for SetVar x
Definition: set.hh:784
Single value precedence propagator.
Definition: precede.hh:65
Gecode toplevel namespace
#define GECODE_POST
Check for failure in a constraint post function.
Definition: macros.hpp:44
Home class for posting propagators
Definition: core.hpp:922
#define GECODE_ES_FAIL(es)
Check whether execution status es is failed, and fail space home.
Definition: macros.hpp:107