ter-dom.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2003
*
* 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
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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namespace Gecode { namespace Int { namespace Distinct {
/*
* Ternary domain consistent distinct
*
*/
template<class View>
forceinline
TerDom<View>::TerDom(Home home, View x0, View x1, View x2)
: TernaryPropagator<View,PC_INT_DOM>(home,x0,x1,x2) {}
template<class View>
ExecStatus
TerDom<View>::post(Home home, View x0, View x1, View x2) {
(void) new (home) TerDom<View>(home,x0,x1,x2);
return ES_OK;
}
template<class View>
forceinline
TerDom<View>::TerDom(Space& home, TerDom<View>& p)
: TernaryPropagator<View,PC_INT_DOM>(home,p) {}
template<class View>
Actor*
TerDom<View>::copy(Space& home) {
return new (home) TerDom<View>(home,*this);
}
#define GECODE_INT_HALL_ONE(x0,x1,x2) \
if (x0.assigned()) { \
GECODE_ME_CHECK(x1.nq(home,x0.val())); \
GECODE_ME_CHECK(x2.nq(home,x0.val())); \
if (x1.assigned()) { \
GECODE_ME_CHECK(x2.nq(home,x1.val())); \
return home.ES_SUBSUMED(*this); \
} \
if (x2.assigned()) { \
GECODE_ME_CHECK(x1.nq(home,x2.val())); \
return home.ES_SUBSUMED(*this); \
} \
return ES_FIX; \
}
#define GECODE_INT_HALL_TWO(x0,x1,x2) \
if ((x0.size() == 2) && (x1.size() == 2) && \
(x0.min() == x1.min()) && (x0.max() == x1.max())) { \
GECODE_ME_CHECK(x2.nq(home,x0.min())); \
GECODE_ME_CHECK(x2.nq(home,x0.max())); \
return ES_FIX; \
}
template<class View>
ExecStatus
TerDom<View>::propagate(Space& home, const ModEventDelta&) {
GECODE_INT_HALL_ONE(x0,x1,x2);
GECODE_INT_HALL_ONE(x1,x0,x2);
GECODE_INT_HALL_ONE(x2,x0,x1);
GECODE_INT_HALL_TWO(x0,x1,x2);
GECODE_INT_HALL_TWO(x0,x2,x1);
GECODE_INT_HALL_TWO(x1,x2,x0);
return ES_FIX;
}
#undef GECODE_INT_HALL_ONE
#undef GECODE_INT_HALL_TWO
}}}
// STATISTICS: int-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::Int::Distinct::TerDom::TerDom
TerDom(Space &home, TerDom< View > &p)
Constructor for cloning p.
Definition ter-dom.hpp:56
Gecode::Int::Distinct::TerDom::propagate
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition ter-dom.hpp:93
Gecode::Int::Distinct::TerDom::post
static ExecStatus post(Home home, View x0, View x1, View x2)
Post propagator for views x.
Definition ter-dom.hpp:49
Gecode::Int::Distinct::TerDom::copy
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition ter-dom.hpp:61
Gecode::Propagator::Space
friend class Space
Definition core.hpp:1066
Gecode::TernaryPropagator< View, PC_INT_DOM >::x2
View x2
Definition pattern.hpp:116
Gecode::TernaryPropagator< View, PC_INT_DOM >::x1
View x1
Definition pattern.hpp:116
Gecode::TernaryPropagator< View, PC_INT_DOM >::x0
View x0
Definition pattern.hpp:116
Gecode::TernaryPropagator< View, PC_INT_DOM >::TernaryPropagator
TernaryPropagator(Space &home, TernaryPropagator &p)
Gecode::View
Gecode::ModEventDelta
int ModEventDelta
Modification event deltas.
Definition core.hpp:89
Gecode::Int::Distinct
Distinct propagators
Gecode::Int
Finite domain integers.
Gecode::Int::PC_INT_DOM
const Gecode::PropCond PC_INT_DOM
Propagate when domain changes.
Definition var-type.hpp:100
Gecode
Gecode toplevel namespace
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
forceinline
#define forceinline
Definition config.hpp:187
GECODE_INT_HALL_ONE
#define GECODE_INT_HALL_ONE(x0, x1, x2)
Check whether x0 forms a Hall set of cardinality one.
Definition ter-dom.hpp:66
GECODE_INT_HALL_TWO
#define GECODE_INT_HALL_TWO(x0, x1, x2)
Check whether x0 and x1 form a Hall set of cardinality two.
Definition ter-dom.hpp:83