eq.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Guido Tack <tack@gecode.org>
* Christian Schulte <schulte@gecode.org>
*
* Contributing authors:
* Gabor Szokoli <szokoli@gecode.org>
*
* Copyright:
* Guido Tack, 2004
* Christian Schulte, 2004
* Gabor Szokoli, 2004
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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namespace Gecode { namespace Set { namespace Rel {
template<class View0, class View1>
forceinline
Eq<View0,View1>::Eq(Home home, View0 x, View1 y)
: MixBinaryPropagator<View0,PC_SET_ANY,View1,PC_SET_ANY>(home,x,y) {}
template<class View0, class View1>
forceinline
Eq<View0,View1>::Eq(Space& home, Eq& p)
: MixBinaryPropagator<View0,PC_SET_ANY,View1,PC_SET_ANY>(home,p) {}
template<class View0, class View1>
ExecStatus
Eq<View0,View1>::post(Home home, View0 x, View1 y) {
if (!same(x,y))
(void) new (home) Eq(home,x,y);
return ES_OK;
}
template<class View0, class View1>
Actor*
Eq<View0,View1>::copy(Space& home) {
return new (home) Eq(home,*this);
}
template<class View0, class View1>
ExecStatus
Eq<View0,View1>::propagate(Space& home, const ModEventDelta& med) {
ModEvent me0 = View0::me(med);
ModEvent me1 = View1::me(med);
Region r;
if (testSetEventLB(me0,me1)) {
GlbRanges<View0> x0lb(x0);
GlbRanges<View1> x1lb(x1);
Iter::Ranges::Union<GlbRanges<View0>,GlbRanges<View1> > lbu(x0lb,x1lb);
Iter::Ranges::Cache lbuc(r,lbu);
GECODE_ME_CHECK(x0.includeI(home,lbuc));
lbuc.reset();
GECODE_ME_CHECK(x1.includeI(home,lbuc));
}
if (testSetEventUB(me0,me1)) {
LubRanges<View0> x0ub(x0);
LubRanges<View1> x1ub(x1);
Iter::Ranges::Inter<LubRanges<View0>,LubRanges<View1> > ubi(x0ub,x1ub);
Iter::Ranges::Cache ubic(r,ubi);
GECODE_ME_CHECK(x0.intersectI(home,ubic));
ubic.reset();
GECODE_ME_CHECK(x1.intersectI(home,ubic));
}
if (testSetEventCard(me0,me1)) {
unsigned int max = std::min(x0.cardMax(),x1.cardMax());
unsigned int min = std::max(x0.cardMin(),x1.cardMin());
GECODE_ME_CHECK(x0.cardMax(home,max));
GECODE_ME_CHECK(x1.cardMax(home,max));
GECODE_ME_CHECK(x0.cardMin(home,min));
GECODE_ME_CHECK(x1.cardMin(home,min));
}
if (x0.assigned()) {
assert (x1.assigned());
return home.ES_SUBSUMED(*this);
}
return shared(x0,x1) ? ES_NOFIX : ES_FIX;
}
}}}
// STATISTICS: set-prop
Gecode::Actor
Base-class for both propagators and branchers.
Definition core.hpp:628
Gecode::Home
Home class for posting propagators
Definition core.hpp:856
Gecode::Iter::Ranges::Cache
Range iterator cache
Definition ranges-cache.hpp:45
Gecode::Iter::Ranges::Inter
Range iterator for computing intersection (binary).
Definition ranges-inter.hpp:44
Gecode::Iter::Ranges::RangeListIter::reset
void reset(void)
Reset iterator to start.
Definition ranges-list.hpp:240
Gecode::Iter::Ranges::Union
Range iterator for computing union (binary).
Definition ranges-union.hpp:44
Gecode::MixBinaryPropagator< View0, PC_SET_ANY, View1, PC_SET_ANY >::x1
View1 x1
Definition pattern.hpp:209
Gecode::MixBinaryPropagator< View0, PC_SET_ANY, View1, PC_SET_ANY >::MixBinaryPropagator
MixBinaryPropagator(Space &home, MixBinaryPropagator &p)
Definition pattern.hpp:597
Gecode::MixBinaryPropagator< View0, PC_SET_ANY, View1, PC_SET_ANY >::x0
View0 x0
Definition pattern.hpp:207
Gecode::Propagator::Space
friend class Space
Definition core.hpp:1066
Gecode::Propagator::med
ModEventDelta med
A set of modification events (used during propagation).
Definition core.hpp:1075
Gecode::Region
Handle to region.
Definition region.hpp:55
Gecode::Set::GlbRanges
Range iterator for the greatest lower bound.
Definition var-imp.hpp:359
Gecode::Set::LubRanges
Range iterator for the least upper bound.
Definition var-imp.hpp:317
Gecode::Set::Rel::Eq::Eq
Eq(Space &home, Eq &p)
Constructor for cloning p.
Definition eq.hpp:49
Gecode::Set::Rel::Eq::propagate
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition eq.hpp:68
Gecode::Set::Rel::Eq::copy
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition eq.hpp:62
Gecode::Set::Rel::Eq::post
static ExecStatus post(Home home, View0 x, View1 y)
Post propagator .
Definition eq.hpp:54
Gecode::Space::ES_SUBSUMED
ExecStatus ES_SUBSUMED(Propagator &p)
Definition core.hpp:3563
Gecode::ModEventDelta
int ModEventDelta
Modification event deltas.
Definition core.hpp:89
GECODE_ME_CHECK
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition macros.hpp:52
Gecode::Set::Rel
Standard set relation propagators.
Definition rel.hh:45
Gecode::Set::Rel::testSetEventLB
bool testSetEventLB(ModEvent me0, ModEvent me1, ModEvent me2)
Definition common.hpp:83
Gecode::Set::Rel::testSetEventCard
bool testSetEventCard(ModEvent me0, ModEvent me1, ModEvent me2)
Definition common.hpp:95
Gecode::Set::Rel::testSetEventUB
bool testSetEventUB(ModEvent me0, ModEvent me1, ModEvent me2)
Definition common.hpp:87
Gecode::Set
Finite integer sets.
Definition var-imp.hpp:137
Gecode::Set::PC_SET_ANY
const Gecode::PropCond PC_SET_ANY
Propagate when any bound or the cardinality of a view changes.
Definition var-type.hpp:248
Gecode
Gecode toplevel namespace
Gecode::min
void min(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition arithmetic.cpp:67
Gecode::same
bool same(VarArgArray< Var > x, VarArgArray< Var > y)
Definition array.hpp:1937
Gecode::ExecStatus
ExecStatus
Definition core.hpp:472
Gecode::ES_OK
@ ES_OK
Execution is okay.
Definition core.hpp:476
Gecode::ES_FIX
@ ES_FIX
Propagation has computed fixpoint.
Definition core.hpp:477
Gecode::ES_NOFIX
@ ES_NOFIX
Propagation has not computed fixpoint.
Definition core.hpp:475
Gecode::max
void max(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition arithmetic.cpp:49
Gecode::shared
bool shared(ViewArray< ViewX > x, ViewArray< ViewY > y)
Definition array.hpp:1466
Gecode::ModEvent
int ModEvent
Type for modification events.
Definition core.hpp:62
forceinline
#define forceinline
Definition config.hpp:187