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1.8.17
gecode
int
task
purge.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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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2009
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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
Int {
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template
<
class
OptTask,
class
PL>
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ExecStatus
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purge
(
Space
& home,
Propagator
&
p
,
TaskArray<OptTask>
&
t
) {
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int
n
=
t
.size();
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for
(
int
i
=
n
;
i
--; )
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if
(
t
[
i
].excluded()) {
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t
[
i
].cancel(home,
p
,PL::pc);
t
[
i
]=
t
[--
n
];
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}
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t
.size(
n
);
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return
(
t
.size() < 2) ? home.
ES_SUBSUMED
(
p
) :
ES_OK
;
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}
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template
<
class
OptTask,
class
PL,
class
Cap>
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ExecStatus
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purge
(
Space
& home,
Propagator
&
p
,
TaskArray<OptTask>
&
t
, Cap
c
) {
52
int
n
=
t
.size();
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for
(
int
i
=
n
;
i
--; )
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if
(
t
[
i
].excluded()) {
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t
[
i
].cancel(home,
p
,PL::pc);
t
[
i
]=
t
[--
n
];
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}
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t
.size(
n
);
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if
(
t
.size() == 1) {
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if
(
t
[0].mandatory())
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GECODE_ME_CHECK
(
c
.gq(home,
t
[0].c()));
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else
if
(
c
.
min
() <
t
[0].c())
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return
ES_OK
;
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}
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return
(
t
.size() < 2) ? home.
ES_SUBSUMED
(
p
) :
ES_OK
;
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}
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}}
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// STATISTICS: int-prop
Gecode::Space::ES_SUBSUMED
ExecStatus ES_SUBSUMED(Propagator &p)
Definition:
core.hpp:3563
Gecode::FloatVal::min
friend FloatVal min(const FloatVal &x, const FloatVal &y)
Definition:
val.hpp:398
t
NodeType t
Type of node.
Definition:
bool-expr.cpp:230
Gecode::Space
Computation spaces.
Definition:
core.hpp:1742
Gecode
Gecode toplevel namespace
Gecode::Propagator
Base-class for propagators.
Definition:
core.hpp:1064
Gecode::Int::purge
ExecStatus purge(Space &home, Propagator &p, TaskArray< OptTask > &t)
Purge optional tasks that are excluded and possibly rewrite propagator.
Definition:
purge.hpp:38
Gecode::Int::TaskArray< OptTask >
GECODE_ME_CHECK
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition:
macros.hpp:52
Test::Float::Arithmetic::c
Gecode::FloatVal c(-8, 8)
n
int n
Number of negative literals for node type.
Definition:
bool-expr.cpp:234
Test::Int::Basic::i
Gecode::IntArgs i({1, 2, 3, 4})
Gecode::ES_OK
@ 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