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rel-op-const-vcv.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
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36 
37 #include <gecode/set.hh>
38 #include <gecode/set/rel.hh>
39 #include <gecode/set/rel-op.hh>
40 
41 namespace Gecode {
42  using namespace Gecode::Set;
43  using namespace Gecode::Set::Rel;
44  using namespace Gecode::Set::RelOp;
45 
46  void
48  SetVar z) {
49  Set::Limits::check(y, "Set::rel");
50  ConstSetView yv(home, y);
51 
52  if (op==SOT_MINUS) {
53  switch (r) {
54  case SRT_EQ:
55  {
58  IntSet yc(yrc);
59  ConstSetView cy(home, yc);
63  ::post(home,cy,x,z)));
64  }
65  break;
66  case SRT_LQ: case SRT_LE: case SRT_GQ: case SRT_GR:
67  {
70  IntSet yc(yrc);
71  ConstSetView cy(home, yc);
76  ::post(home,cy,x,tmp)));
77  rel(home,tmp,r,z);
78  }
79  break;
80  case SRT_NQ:
81  {
82  SetVar tmp(home);
85  ::post(home,z,tmp)));
88  IntSet yc(yrc);
89  ConstSetView cy(home, yc);
93  ::post(home,cy,x,tmp)));
94  }
95  break;
96  case SRT_SUB:
97  {
100  IntSet yc(yrc);
101  ConstSetView cy(home, yc);
104  ::post(home,cy,x,z)));
105 
106  }
107  break;
108  case SRT_SUP:
109  {
110  SetVar tmp(home);
112  (Subset<SetView,SetView>::post(home,z,tmp)));
113 
116  IntSet yc(yrc);
117  ConstSetView cy(home, yc);
118 
119  SetView xv(x);
123  ::post(home,cy,xv,tmp)));
124  }
125  break;
126  case SRT_DISJ:
127  {
128  SetVar tmp(home);
129  EmptyView emptyset;
131  ::post(home, z, tmp, emptyset)));
132 
135  IntSet yc(yrc);
136  ConstSetView cy(home, yc);
140  ::post(home,cy,x,tmp)));
141  }
142  break;
143  case SRT_CMPL:
144  {
145  SetView xv(x);
150  SetView>::post(home, yv, cx, z)));
151  }
152  break;
153  default:
154  throw UnknownRelation("Set::rel");
155  }
156  } else {
157  rel(home, y, op, x, r, z);
158  }
159  }
160 }
161 
162 // STATISTICS: set-post
Post propagator for SetVar x
Definition: set.hh:767
Propagator for ternary union
Definition: rel-op.hh:154
Post propagator for SetVar SetOpType SetVar y
Definition: set.hh:767
Range iterator for greatest lower bound of constant set view
Definition: const.hpp:664
#define GECODE_ES_FAIL(es)
Check whether execution status es is failed, and fail space home.
Definition: macros.hpp:103
Constant view.
Definition: view.hpp:186
static const IntSet empty
Empty set.
Definition: int.hh:283
const int min
Smallest allowed integer in integer set.
Definition: set.hh:99
Post propagator for SetVar SetOpType SetVar SetRelType SetVar z
Definition: set.hh:767
Standard set relation propagators.
Definition: common.hpp:53
@ SRT_LQ
Less or equal ( )
Definition: set.hh:650
SetOpType
Common operations for sets.
Definition: set.hh:660
Standard set operation propagators.
Definition: common.hpp:76
@ SRT_GQ
Greater or equal ( )
Definition: set.hh:652
@ SRT_SUB
Subset ( )
Definition: set.hh:646
Propagator for the subset constraint
Definition: rel.hh:65
@ SRT_SUP
Superset ( )
Definition: set.hh:647
@ SRT_DISJ
Disjoint ( )
Definition: set.hh:648
Gecode toplevel namespace
Integer sets.
Definition: int.hh:174
const int max
Largest allowed integer in integer set.
Definition: set.hh:97
A complement iterator spezialized for the BndSet limits.
Definition: var-imp.hpp:293
@ SRT_EQ
Equality ( )
Definition: set.hh:644
Propagator for ternary intersection
Definition: rel-op.hh:124
Constant view for the empty set.
Definition: view.hpp:336
Home class for posting propagators
Definition: core.hpp:856
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition: set.hh:767
TFE post(PropagatorGroup g)
Only post functions (but not propagators) from g are considered.
Definition: filter.cpp:138
Set variables
Definition: set.hh:127
SetRelType
Common relation types for sets.
Definition: set.hh:643
@ SRT_LE
Less ( )
Definition: set.hh:651
@ SRT_GR
Greater ( )
Definition: set.hh:653
@ SRT_NQ
Disequality ( )
Definition: set.hh:645
@ SRT_CMPL
Complement.
Definition: set.hh:649
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVal n)
Propagates .
Definition: rel.cpp:43
Propagator for negated equality
Definition: rel.hh:268
Set view for set variables
Definition: view.hpp:56
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
Post propagator for SetVar SetOpType op
Definition: set.hh:767
Propagator for the superset of intersection
Definition: rel-op.hh:63
Exception: Unknown relation passed as argument
Definition: exception.hpp:87
Complement set view.
Definition: view.hpp:769
@ SOT_MINUS
Difference.
Definition: set.hh:664
Finite integer sets.
Definition: var-imp.hpp:137