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gecode
set
rel
nosubset.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Guido Tack <tack@gecode.org>
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* Christian Schulte <schulte@gecode.org>
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* Gabor Szokoli <szokoli@gecode.org>
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*
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* Copyright:
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* Guido Tack, 2004
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* Christian Schulte, 2004
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* Gabor Szokoli, 2004
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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namespace
Gecode
{
namespace
Set {
namespace
Rel {
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/*
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* "No Subset" propagator
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*
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*/
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template
<
class
View0,
class
View1>
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forceinline
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NoSubset<View0,View1>::NoSubset
(
Home
home, View0 y0, View1 y1)
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:
MixBinaryPropagator
<View0,
PC_SET_CLUB
,
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View1,
PC_SET_CGLB
>(home,y0,y1) {}
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template
<
class
View0,
class
View1>
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forceinline
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NoSubset<View0,View1>::NoSubset
(
Space
& home,
NoSubset<View0,View1>
&
p
)
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:
MixBinaryPropagator
<View0,
PC_SET_CLUB
,
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View1,
PC_SET_CGLB
>(home,
p
) {}
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template
<
class
View0,
class
View1>
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ExecStatus
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NoSubset<View0,View1>::post
(
Home
home, View0
x
, View1
y
) {
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if
(
same
(
x
,
y
))
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return
ES_FAILED
;
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if
(
me_failed
(
x
.
cardMin
(home,1)))
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return
ES_FAILED
;
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(void)
new
(home)
NoSubset<View0,View1>
(home,
x
,
y
);
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return
ES_OK
;
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}
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template
<
class
View0,
class
View1>
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Actor
*
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NoSubset<View0,View1>::copy
(
Space
& home) {
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return
new
(home)
NoSubset<View0,View1>
(home,*
this
);
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}
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template
<
class
View0,
class
View1>
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ExecStatus
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NoSubset<View0,View1>::propagate
(
Space
& home,
const
ModEventDelta
&) {
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GlbRanges<View0>
x0lb(x0);
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LubRanges<View1>
x1ub(x1);
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if
(!
Iter::Ranges::subset
(x0lb, x1ub))
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return
home.
ES_SUBSUMED
(*
this
);
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if
(x0.cardMin()>x1.cardMax()) {
return
home.
ES_SUBSUMED
(*
this
); }
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LubRanges<View0>
x0ub(x0);
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GlbRanges<View1>
x1lb(x1);
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Iter::Ranges::Diff<LubRanges<View0>
,
GlbRanges<View1>
>
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breakers(x0ub,x1lb);
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if
(!breakers()) {
return
ES_FAILED
; }
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if
(breakers.
min
() == breakers.
max
()) {
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int
b1
= breakers.
min
();
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++breakers;
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if
(breakers()) {
return
ES_FIX
; }
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//Only one subsetness-breaker element left:
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GECODE_ME_CHECK
( x0.include(home,
b1
) );
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GECODE_ME_CHECK
( x1.exclude(home,
b1
) );
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return
home.
ES_SUBSUMED
(*
this
);
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}
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return
ES_FIX
;
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}
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}}}
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// STATISTICS: set-prop
Gecode::x
Post propagator for SetVar x
Definition:
set.hh:767
Gecode::Set::PC_SET_CGLB
const Gecode::PropCond PC_SET_CGLB
Propagate when the cardinality or the greatest lower bound of a view changes.
Definition:
var-type.hpp:238
Gecode::y
Post propagator for SetVar SetOpType SetVar y
Definition:
set.hh:767
Gecode::Set::Rel::NoSubset::NoSubset
NoSubset(Space &home, NoSubset &p)
Constructor for cloning p.
Definition:
nosubset.hpp:53
Gecode::Set::Rel::NoSubset::propagate
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition:
nosubset.hpp:76
Gecode::me_failed
bool me_failed(ModEvent me)
Check whether modification event me is failed.
Definition:
modevent.hpp:54
Gecode::Space::ES_SUBSUMED
ExecStatus ES_SUBSUMED(Propagator &p)
Definition:
core.hpp:3563
Gecode::SetVar::cardMin
unsigned int cardMin(void) const
Return cardinality minimum.
Definition:
set.hpp:78
Gecode::Space
Computation spaces.
Definition:
core.hpp:1742
Gecode::Actor
Base-class for both propagators and branchers.
Definition:
core.hpp:628
Gecode::Iter::Ranges::subset
bool subset(I &i, J &j)
Check whether range iterator i is subset of range iterator j.
Definition:
ranges-operations.hpp:97
Gecode::Set::Rel::NoSubset::post
static ExecStatus post(Home home, View0 x, View1 y)
Post propagator .
Definition:
nosubset.hpp:59
Gecode
Gecode toplevel namespace
Gecode::MixBinaryPropagator
Mixed binary propagator.
Definition:
pattern.hpp:204
Gecode::Iter::Ranges::MinMax::min
int min(void) const
Return smallest value of range.
Definition:
ranges-minmax.hpp:99
Test::Int::Basic::b1
Basic b1(3)
Gecode::Set::PC_SET_CLUB
const Gecode::PropCond PC_SET_CLUB
Propagate when the cardinality or the least upper bound of a view changes.
Definition:
var-type.hpp:227
Gecode::Home
Home class for posting propagators
Definition:
core.hpp:856
Gecode::Set::Rel::same
bool same(VX, VY)
Test whether two views are in fact the same.
Definition:
common.hpp:57
Gecode::Iter::Ranges::Diff
Range iterator for computing set difference.
Definition:
ranges-diff.hpp:43
Gecode::Set::GlbRanges
Range iterator for the greatest lower bound.
Definition:
var-imp.hpp:359
Gecode::Set::Rel::NoSubset::copy
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition:
nosubset.hpp:70
Gecode::ES_FIX
Propagation has computed fixpoint.
Definition:
core.hpp:477
Gecode::Set::LubRanges
Range iterator for the least upper bound.
Definition:
var-imp.hpp:317
Gecode::Iter::Ranges::MinMax::max
int max(void) const
Return largest value of range.
Definition:
ranges-minmax.hpp:103
forceinline
#define forceinline
Definition:
config.hpp:185
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::NoSubset
Propagator for the negated subset constraint
Definition:
rel.hh:90
Gecode::ES_FAILED
Execution has resulted in failure.
Definition:
core.hpp:474
Gecode::ModEventDelta
int ModEventDelta
Modification event deltas.
Definition:
core.hpp:89
Gecode::ES_OK
Execution is okay.
Definition:
core.hpp:476
p
int p
Number of positive literals for node type.
Definition:
bool-expr.cpp:232
Gecode::ExecStatus
ExecStatus
Definition:
core.hpp:472