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channel.hpp
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2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
5  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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8  * Christian Schulte, 2004
9  * Vincent Barichard, 2012
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35 
36 namespace Gecode { namespace Float { namespace Channel {
37 
38  template<class A, class B>
40  Channel<A,B>::Channel(Home home, A x0, B x1)
41  : MixBinaryPropagator<A,PC_FLOAT_BND,B,Int::PC_INT_BND>(home,x0,x1) {}
42 
43  template<class A, class B>
46  : MixBinaryPropagator<A,PC_FLOAT_BND,B,Int::PC_INT_BND>(home,p) {}
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>
56  Channel<A,B>::post(Home home, A x0, B x1) {
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 
static ExecStatus post(Home home, A x0, B x1)
Post propagator for .
Definition: channel.hpp:56
virtual Actor * copy(Space &home)
Create copy during cloning.
Definition: channel.hpp:50
ExecStatus ES_SUBSUMED(Propagator &p)
Definition: core.hpp:3490
Channel(Space &home, Channel &p)
Constructor for cloning p.
Definition: channel.hpp:45
#define forceinline
Definition: config.hpp:185
Propagation has computed fixpoint.
Definition: core.hpp:476
const int max
Largest allowed integer value.
Definition: int.hh:116
Computation spaces.
Definition: core.hpp:1701
const int min
Smallest allowed integer value.
Definition: int.hh:118
Base-class for both propagators and branchers.
Definition: core.hpp:627
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
Propagator for bounds consistent integer part operator
Definition: channel.hh:58
const Gecode::PropCond PC_INT_BND
Propagate when minimum or maximum of a view changes.
Definition: var-type.hpp:91
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition: macros.hpp:52
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition: channel.hpp:68
Float value type.
Definition: float.hh:334
Mixed binary propagator.
Definition: pattern.hpp:204
ExecStatus
Definition: core.hpp:471
Execution is okay.
Definition: core.hpp:475
const Gecode::PropCond PC_FLOAT_BND
Propagate when minimum or maximum of a view changes.
Definition: var-type.hpp:292
Gecode toplevel namespace
int ModEventDelta
Modification event deltas.
Definition: core.hpp:89
Home class for posting propagators
Definition: core.hpp:853