nq.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
*
* Copyright:
* Christian Schulte, 2004
* Vincent Barichard, 2012
*
* 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.
*
*/
namespace Gecode { namespace Float { namespace Rel {
/*
* Disequality
*
*/
template<class View0, class View1>
forceinline
Nq<View0,View1>::Nq(Home home, View0 x0, View1 x1)
: MixBinaryPropagator<View0,PC_FLOAT_VAL,View1,PC_FLOAT_VAL>(home,x0,x1) {}
template<class View0, class View1>
ExecStatus
Nq<View0,View1>::post(Home home, View0 x0, View1 x1){
if (x0.assigned() && x1.assigned()) {
if (overlap(x0.val(),x1.val()))
return ES_FAILED;
} else if (x0 == x1) {
return ES_FAILED;
} else {
(void) new (home) Nq<View0,View1>(home,x0,x1);
}
return ES_OK;
}
template<class View0, class View1>
forceinline
Nq<View0,View1>::Nq(Space& home, Nq<View0,View1>& p)
: MixBinaryPropagator<View0,PC_FLOAT_VAL,View1,PC_FLOAT_VAL>(home,p) {}
template<class View0, class View1>
Actor*
Nq<View0,View1>::copy(Space& home) {
return new (home) Nq<View0,View1>(home,*this);
}
template<class View0, class View1>
ExecStatus
Nq<View0,View1>::propagate(Space& home, const ModEventDelta&) {
if (x0.assigned() && x1.assigned()) {
return overlap(x0.val(),x1.val()) ? ES_FAILED : home.ES_SUBSUMED(*this);
}
return ES_FIX;
}
/*
* Disequality with float value
*
*/
template<class View>
forceinline
NqFloat<View>::NqFloat(Home home, View x, FloatVal _c)
: UnaryPropagator<View,PC_FLOAT_VAL>(home,x), c(_c) {}
template<class View>
ExecStatus
NqFloat<View>::post(Home home, View x, FloatVal c){
if (x.assigned()) {
if (overlap(x.val(),c))
return ES_FAILED;
} else {
(void) new (home) NqFloat<View>(home,x,c);
}
return ES_OK;
}
template<class View>
forceinline
NqFloat<View>::NqFloat(Space& home, NqFloat<View>& p)
: UnaryPropagator<View,PC_FLOAT_VAL>(home,p), c(p.c) {}
template<class View>
Actor*
NqFloat<View>::copy(Space& home) {
return new (home) NqFloat<View>(home,*this);
}
template<class View>
ExecStatus
NqFloat<View>::propagate(Space& home, const ModEventDelta&) {
if (x0.assigned()) {
return (overlap(x0.val(),c)) ? ES_FAILED : home.ES_SUBSUMED(*this);
}
return ES_FIX;
}
}}}
// STATISTICS: float-prop
Gecode::Actor
Base-class for both propagators and branchers.
Definition core.hpp:628
Gecode::FloatVal
Float value type.
Definition float.hh:334
Gecode::Float::Rel::NqFloat::NqFloat
NqFloat(Space &home, NqFloat< View > &p)
Constructor for cloning p.
Definition nq.hpp:104
Gecode::Float::Rel::NqFloat::c
FloatVal c
Float constant to check.
Definition rel.hh:213
Gecode::Float::Rel::NqFloat::propagate
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition nq.hpp:115
Gecode::Float::Rel::NqFloat::copy
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition nq.hpp:109
Gecode::Float::Rel::NqFloat::post
static ExecStatus post(Home home, View x0, FloatVal c)
Post bounds consistent propagator .
Definition nq.hpp:92
Gecode::Float::Rel::Nq::propagate
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition nq.hpp:74
Gecode::Float::Rel::Nq::post
static ExecStatus post(Home home, View0 x0, View1 x1)
Post bounds consistent propagator .
Definition nq.hpp:49
Gecode::Float::Rel::Nq::Nq
Nq(Space &home, Nq< View0, View1 > &p)
Constructor for cloning p.
Definition nq.hpp:63
Gecode::Float::Rel::Nq::copy
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition nq.hpp:68
Gecode::Home
Home class for posting propagators
Definition core.hpp:856
Gecode::MixBinaryPropagator< View0, PC_FLOAT_VAL, View1, PC_FLOAT_VAL >::x1
View1 x1
Definition pattern.hpp:209
Gecode::MixBinaryPropagator< View0, PC_FLOAT_VAL, View1, PC_FLOAT_VAL >::MixBinaryPropagator
MixBinaryPropagator(Space &home, MixBinaryPropagator &p)
Definition pattern.hpp:597
Gecode::MixBinaryPropagator< View0, PC_FLOAT_VAL, View1, PC_FLOAT_VAL >::x0
View0 x0
Definition pattern.hpp:207
Gecode::Propagator::Space
friend class Space
Definition core.hpp:1066
Gecode::UnaryPropagator< View, PC_FLOAT_VAL >::x0
View x0
Definition pattern.hpp:58
Gecode::UnaryPropagator< View, PC_FLOAT_VAL >::UnaryPropagator
UnaryPropagator(Space &home, UnaryPropagator &p)
Gecode::View
Gecode::ValSelCommitBase::val
virtual Val val(const Space &home, View x, int i)=0
Return value of view x at position i.
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::Float::Rel
Simple relation propagators.
Gecode::Float
Floating point numbers.
Gecode::Float::PC_FLOAT_VAL
const Gecode::PropCond PC_FLOAT_VAL
Propagate when a view becomes assigned (single value).
Definition var-type.hpp:283
Gecode::Float::overlap
bool overlap(const FloatVal &x, const FloatVal &y)
Definition val.hpp:498
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
Gecode::ES_FAILED
@ ES_FAILED
Execution has resulted in failure.
Definition core.hpp:474
forceinline
#define forceinline
Definition config.hpp:187