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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
13 * development environment:
14 * http://www.gecode.org
15 *
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36
37#include <gecode/set/rel-op.hh>
38
39namespace 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
Home class for posting propagators
Definition core.hpp:856
Integer sets.
Definition int.hh:174
Passing integer variables.
Definition int.hh:656
Exception: Illegal operation passed as argument
Integer view for integer variables.
Definition view.hpp:129
Exception: Unknown operation passed as argument
Definition exception.hpp:94
Set variables
Definition set.hh:127
Propagator for nary intersection
Definition rel-op.hh:183
Propagator for nary partition
Definition rel-op.hh:256
Propagator for nary union
Definition rel-op.hh:219
Singleton set view.
Definition view.hpp:594
View arrays.
Definition array.hpp:253
#define GECODE_POST
Check for failure in a constraint post function.
Definition macros.hpp:40
#define GECODE_ES_FAIL(es)
Check whether execution status es is failed, and fail space home.
Definition macros.hpp:103
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVar x1)
Post propagator for .
Definition rel.cpp:68
SetOpType
Common operations for sets.
Definition set.hh:660
@ SOT_MINUS
Difference.
Definition set.hh:664
@ SOT_DUNION
Disjoint union.
Definition set.hh:662
@ SOT_UNION
Union.
Definition set.hh:661
@ SOT_INTER
Intersection
Definition set.hh:663
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
Standard set operation propagators.
Definition rel-op.hh:46
Standard set relation propagators.
Definition rel.hh:45
Finite integer sets.
Definition var-imp.hpp:137
Gecode toplevel namespace
Post propagator for SetVar SetOpType SetVar SetRelType SetVar z
Definition set.hh:767
Post propagator for SetVar SetOpType SetVar y
Definition set.hh:767
TFE post(PropagatorGroup g)
Only post functions (but not propagators) from g are considered.
Definition filter.cpp:138
Post propagator for SetVar x
Definition set.hh:767
Post propagator for SetVar SetOpType op
Definition set.hh:767