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card.hpp
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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 * Christian Schulte <schulte@gecode.org>
6 * Gabor Szokoli <szokoli@gecode.org>
7 *
8 * Copyright:
9 * Guido Tack, 2004
10 * Christian Schulte, 2004
11 * Gabor Szokoli, 2004
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
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37
38#include <gecode/set.hh>
39#include <gecode/int.hh>
40
41namespace Gecode { namespace Set { namespace Int {
42
43 template<class View>
47 Gecode::Int::IntView,Gecode::Int::PC_INT_BND> (home, y0, y1) {}
48
49 template<class View>
52 GECODE_ME_CHECK(x1.gq(home,0));
54 (void) new (home) Card(home,x0,x1);
55 return ES_OK;
56 }
57
58 template<class View>
63
64 template<class View>
65 Actor*
67 return new (home) Card(home,*this);
68 }
69
70 template<class View>
73 int x1min, x1max;
74 do {
75 x1min = x1.min();
76 x1max = x1.max();
77 GECODE_ME_CHECK(x0.cardMin(home,static_cast<unsigned int>(x1min)));
78 GECODE_ME_CHECK(x0.cardMax(home,static_cast<unsigned int>(x1max)));
79 GECODE_ME_CHECK(x1.gq(home,static_cast<int>(x0.cardMin())));
80 GECODE_ME_CHECK(x1.lq(home,static_cast<int>(x0.cardMax())));
81 } while (x1.min() > x1min || x1.max() < x1max);
82 if (x1.assigned())
83 return home.ES_SUBSUMED(*this);
84 return ES_FIX;
85 }
86
87}}}
88
89// STATISTICS: set-prop
int p
Number of positive literals for node type.
Base-class for both propagators and branchers.
Definition core.hpp:628
Home class for posting propagators
Definition core.hpp:856
Integer view for integer variables.
Definition view.hpp:129
ModEvent gq(Space &home, int n)
Restrict domain values to be greater or equal than n.
Definition int.hpp:139
Mixed binary propagator.
Definition pattern.hpp:204
Propagator for cardinality
Definition int.hh:231
Card(Space &home, Card &p)
Constructor for cloning p.
Definition card.hpp:60
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition card.hpp:72
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition card.hpp:66
static ExecStatus post(Home home, View s, Gecode::Int::IntView x)
Post propagator for .
Definition card.hpp:51
Computation spaces.
Definition core.hpp:1742
ExecStatus ES_SUBSUMED(Propagator &p)
Definition core.hpp:3563
int ModEventDelta
Modification event deltas.
Definition core.hpp:89
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition macros.hpp:52
const int max
Largest allowed integer value.
Definition int.hh:116
const Gecode::PropCond PC_INT_BND
Propagate when minimum or maximum of a view changes.
Definition var-type.hpp:91
const Gecode::PropCond PC_SET_CARD
Propagate when the cardinality of a view changes.
Definition var-type.hpp:216
Gecode toplevel namespace
ExecStatus
Definition core.hpp:472
@ ES_OK
Execution is okay.
Definition core.hpp:476
@ ES_FIX
Propagation has computed fixpoint.
Definition core.hpp:477
#define forceinline
Definition config.hpp:187