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rel-op-singleton.cpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Guido Tack <tack@gecode.org>
5  *
6  * Contributing authors:
7  * Gabor Szokoli <szokoli@gecode.org>
8  *
9  * Copyright:
10  * Guido Tack, 2004, 2005
11  *
12  * This file is part of Gecode, the generic constraint
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14  * http://www.gecode.org
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36 
37 #include <gecode/set/rel-op.hh>
38 
39 namespace Gecode {
40  using namespace Gecode::Set;
41  using namespace Gecode::Set::Rel;
42  using namespace Gecode::Set::RelOp;
43 
44  void
45  rel(Home home, SetOpType op, const IntVarArgs& x, SetVar y) {
47  ViewArray<SingletonView> xa(home,x.size());
48  for (int i=x.size(); i--;) {
49  Int::IntView iv(x[i]);
50  SingletonView sv(iv);
51  xa[i] = sv;
52  }
53 
54  switch (op) {
55  case SOT_UNION:
57  ::post(home, xa, y)));
58  break;
59  case SOT_DUNION:
61  ::post(home, xa, y)));
62  break;
63  case SOT_INTER:
66  ::post(home, xa, y)));
67  break;
68  case SOT_MINUS:
69  throw IllegalOperation("Set::rel");
70  break;
71  default:
72  throw UnknownOperation("Set::rel");
73  }
74  }
75 
76  void
77  rel(Home home, SetOpType op, const IntVarArgs& x, const IntSet& z,
78  SetVar y) {
80  Set::Limits::check(z, "Set::rel");
81  ViewArray<SingletonView> xa(home,x.size());
82  for (int i=x.size(); i--;) {
83  Int::IntView iv(x[i]);
84  SingletonView sv(iv);
85  xa[i] = sv;
86  }
87 
88  switch (op) {
89  case SOT_UNION:
91  ::post(home, xa, z, y)));
92  break;
93  case SOT_DUNION:
95  ::post(home, xa, z, y)));
96  break;
97  case SOT_INTER:
100  ::post(home, xa, z, y)));
101  break;
102  case SOT_MINUS:
103  throw IllegalOperation("set::rel");
104  break;
105  default:
106  throw UnknownOperation("Set::rel");
107  }
108  }
109 }
110 
111 // STATISTICS: set-post
Post propagator for SetVar SetOpType op
Definition: set.hh:767
void check(int n, const char *l)
Check whether integer n is in range, otherwise throw overflow exception with information l...
Definition: limits.hpp:37
Propagator for nary union
Definition: rel-op.hh:218
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:1569
Exception: Unknown operation passed as argument
Definition: exception.hpp:94
SetOpType
Common operations for sets.
Definition: set.hh:660
Difference.
Definition: set.hh:664
Gecode::IntArgs i({1, 2, 3, 4})
Exception: Illegal operation passed as argument
Definition: exception.hpp:101
Propagator for nary partition
Definition: rel-op.hh:255
Intersection
Definition: set.hh:663
Integer sets.
Definition: int.hh:174
Post propagator for SetVar SetOpType SetVar SetRelType SetVar z
Definition: set.hh:767
View arrays.
Definition: array.hpp:235
Passing integer variables.
Definition: int.hh:656
Singleton set view.
Definition: view.hpp:594
Standard set operation propagators.
Definition: common.hpp:76
Union.
Definition: set.hh:661
Integer view for integer variables.
Definition: view.hpp:129
Post propagator for SetVar SetOpType SetVar y
Definition: set.hh:767
Set variables
Definition: set.hh:127
Disjoint union.
Definition: set.hh:662
Standard set relation propagators.
Definition: common.hpp:53
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVal n)
Propagates .
Definition: rel.cpp:43
Post propagator for SetVar x
Definition: set.hh:767
Finite integer sets.
Definition: var-imp.hpp:137
Gecode toplevel namespace
#define GECODE_POST
Check for failure in a constraint post function.
Definition: macros.hpp:40
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
Propagator for nary intersection
Definition: rel-op.hh:182
TFE post(PropagatorGroup g)
Only post functions (but not propagators) from g are considered.
Definition: filter.cpp:138