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channel.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
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35
36namespace Gecode { namespace Float { namespace Channel {
37
38 template<class A, class B>
42
43 template<class A, class B>
47
48 template<class A, class B>
49 Actor*
51 return new (home) Channel<A,B>(home,*this);
52 }
53
54 template<class A, class B>
59 GECODE_ME_CHECK(x1.gq(home,static_cast<int>(std::ceil(x0.min()))));
60 GECODE_ME_CHECK(x1.lq(home,static_cast<int>(std::floor(x0.max()))));
61 GECODE_ME_CHECK(x0.eq(home,FloatVal(x1.min(),x1.max())));
62 (void) new (home) Channel<A,B>(home,x0,x1);
63 return ES_OK;
64 }
65
66 template<class A, class B>
69 GECODE_ME_CHECK(x1.gq(home,static_cast<int>(std::ceil(x0.min()))));
70 GECODE_ME_CHECK(x1.lq(home,static_cast<int>(std::floor(x0.max()))));
71 GECODE_ME_CHECK(x0.eq(home,FloatVal(x1.min(),x1.max())));
72 return x0.assigned() ? home.ES_SUBSUMED(*this) : ES_FIX;
73 }
74
75}}}
76
77// STATISTICS: float-prop
78
Base-class for both propagators and branchers.
Definition core.hpp:628
Float value type.
Definition float.hh:334
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition channel.hpp:68
virtual Actor * copy(Space &home)
Create copy during cloning.
Definition channel.hpp:50
Channel(Space &home, Channel &p)
Constructor for cloning p.
Definition channel.hpp:45
static ExecStatus post(Home home, A x0, B x1)
Post propagator for .
Definition channel.hpp:56
Home class for posting propagators
Definition core.hpp:856
friend class Space
Definition core.hpp:1068
ExecStatus ES_SUBSUMED(Propagator &p)
Propagator p is subsumed
Definition core.hpp:3570
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
Channel propagators
Floating point numbers.
const Gecode::PropCond PC_FLOAT_BND
Propagate when minimum or maximum of a view changes.
Definition var-type.hpp:292
const int min
Smallest allowed integer value.
Definition int.hh:118
const int max
Largest allowed integer value.
Definition int.hh:116
Finite domain integers.
const Gecode::PropCond PC_INT_BND
Propagate when minimum or maximum of a view changes.
Definition var-type.hpp:91
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:194