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nq.hpp
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
6 *
7 * Copyright:
8 * Christian Schulte, 2004
9 * Vincent Barichard, 2012
10 *
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35
36namespace Gecode { namespace Float { namespace Rel {
37
38 /*
39 * Disequality
40 *
41 */
42 template<class View0, class View1>
44 Nq<View0,View1>::Nq(Home home, View0 x0, View1 x1)
45 : MixBinaryPropagator<View0,PC_FLOAT_VAL,View1,PC_FLOAT_VAL>(home,x0,x1) {}
46
47 template<class View0, class View1>
49 Nq<View0,View1>::post(Home home, View0 x0, View1 x1){
50 if (x0.assigned() && x1.assigned()) {
51 if (overlap(x0.val(),x1.val()))
52 return ES_FAILED;
53 } else if (x0 == x1) {
54 return ES_FAILED;
55 } else {
56 (void) new (home) Nq<View0,View1>(home,x0,x1);
57 }
58 return ES_OK;
59 }
60
61 template<class View0, class View1>
65
66 template<class View0, class View1>
67 Actor*
69 return new (home) Nq<View0,View1>(home,*this);
70 }
71
72 template<class View0, class View1>
75 if (x0.assigned() && x1.assigned()) {
76 return overlap(x0.val(),x1.val()) ? ES_FAILED : home.ES_SUBSUMED(*this);
77 }
78 return ES_FIX;
79 }
80
81 /*
82 * Disequality with float value
83 *
84 */
85 template<class View>
88 : UnaryPropagator<View,PC_FLOAT_VAL>(home,x), c(_c) {}
89
90 template<class View>
93 if (x.assigned()) {
94 if (overlap(x.val(),c))
95 return ES_FAILED;
96 } else {
97 (void) new (home) NqFloat<View>(home,x,c);
98 }
99 return ES_OK;
100 }
101
102 template<class View>
106
107 template<class View>
108 Actor*
110 return new (home) NqFloat<View>(home,*this);
111 }
112
113 template<class View>
116 if (x0.assigned()) {
117 return (overlap(x0.val(),c)) ? ES_FAILED : home.ES_SUBSUMED(*this);
118 }
119 return ES_FIX;
120 }
121
122
123
124}}}
125
126// STATISTICS: float-prop
int p
Number of positive literals for node type.
Base-class for both propagators and branchers.
Definition core.hpp:628
Float value type.
Definition float.hh:334
Binary bounds consistent disequality propagator with float value.
Definition rel.hh:208
NqFloat(Space &home, NqFloat< View > &p)
Constructor for cloning p.
Definition nq.hpp:104
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition nq.hpp:115
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition nq.hpp:109
static ExecStatus post(Home home, View x0, FloatVal c)
Post bounds consistent propagator .
Definition nq.hpp:92
Binary bounds consistent disequality propagator.
Definition rel.hh:180
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition nq.hpp:74
static ExecStatus post(Home home, View0 x0, View1 x1)
Post bounds consistent propagator .
Definition nq.hpp:49
Nq(Space &home, Nq< View0, View1 > &p)
Constructor for cloning p.
Definition nq.hpp:63
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition nq.hpp:68
Home class for posting propagators
Definition core.hpp:856
Mixed binary propagator.
Definition pattern.hpp:204
Computation spaces.
Definition core.hpp:1742
Unary propagator.
Definition pattern.hpp:55
bool assigned(void) const
Test whether view is assigned.
Definition var.hpp:111
ExecStatus ES_SUBSUMED(Propagator &p)
Definition core.hpp:3563
int ModEventDelta
Modification event deltas.
Definition core.hpp:89
const Gecode::PropCond PC_FLOAT_VAL
Propagate when a view becomes assigned (single value)
Definition var-type.hpp:283
bool overlap(const FloatVal &x, const FloatVal &y)
Definition val.hpp:498
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
@ ES_FAILED
Execution has resulted in failure.
Definition core.hpp:474
Post propagator for SetVar x
Definition set.hh:767
#define forceinline
Definition config.hpp:187