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div.hpp
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3  * Main authors:
4  * Guido Tack <tack@gecode.org>
5  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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7  * Copyright:
8  * Guido Tack, 2008
9  * Vincent Barichard, 2012
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12  * $Date: 2012-07-20 14:50:03 +0200 (Fri, 20 Jul 2012) $ by $Author: vbarichard $
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39 
40 namespace Gecode { namespace Float { namespace Arithmetic {
41 
42  /*
43  * Bounds consistent division operator
44  *
45  */
46  template<class A, class B, class C>
48  Div<A,B,C>::Div(Home home, A x0, B x1, C x2)
50 
51  template<class A, class B, class C>
53  Div<A,B,C>::Div(Space& home, bool share, Div<A,B,C>& p)
55 
56  template<class A, class B, class C>
57  Actor*
58  Div<A,B,C>::copy(Space& home, bool share) {
59  return new (home) Div<A,B,C>(home,share,*this);
60  }
61 
62  template<class A, class B, class C>
64  Div<A,B,C>::post(Home home, A x0, B x1, C x2) {
65  (void) new (home) Div<A,B,C>(home,x0,x1,x2);
66  return ES_OK;
67  }
68 
69  template<class A, class B, class C>
72  if (x1.assigned() && (x1.val() == 0)) return ES_FAILED;
73  GECODE_ME_CHECK(x2.eq(home,x0.domain() / x1.domain()));
74  GECODE_ME_CHECK(x0.eq(home,x2.domain() * x1.domain()));
75  if (!x2.assigned() || (x2.val() != 0)) GECODE_ME_CHECK(x1.eq(home,x0.domain() / x2.domain()));
76  return (x0.assigned() && x1.assigned()) ? home.ES_SUBSUMED(*this) : ES_NOFIX;
77  }
78 
79 }}}
80 
81 // STATISTICS: float-prop
82 
ExecStatus ES_SUBSUMED(Propagator &p)
Definition: core.hpp:2973
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition: div.hpp:71
Computation spaces.
Definition: core.hpp:1362
Base-class for both propagators and branchers.
Definition: core.hpp:666
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:236
Execution has resulted in failure.
Definition: core.hpp:525
Mixed ternary propagator.
Definition: propagator.hpp:235
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition: macros.hpp:45
ExecStatus
Definition: core.hpp:523
#define forceinline
Definition: config.hpp:132
Div(Space &home, bool share, Div &p)
Constructor for cloning p.
Definition: div.hpp:53
Execution is okay.
Definition: core.hpp:527
Propagation has not computed fixpoint.
Definition: core.hpp:526
static ExecStatus post(Home home, A x0, B x1, C x2)
Post propagator for .
Definition: div.hpp:64
const Gecode::PropCond PC_FLOAT_BND
Propagate when minimum or maximum of a view changes.
Definition: var-type.hpp:292
Gecode toplevel namespace
Propagator for bounds multiplication operator
Definition: arithmetic.hh:333
virtual Actor * copy(Space &home, bool share)
Create copy during cloning.
Definition: div.hpp:58
int ModEventDelta
Modification event deltas.
Definition: core.hpp:173
Home class for posting propagators
Definition: core.hpp:717