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gecode
int
precede.cpp
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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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* Christopher Mears <Chris.Mears@monash.edu>
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*
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* Contributing authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christopher Mears, 2011
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* Christian Schulte, 2011
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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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#include <
gecode/int/precede.hh
>
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namespace
Gecode
{
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void
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precede
(
Home
home,
const
IntVarArgs
&
x
,
int
s,
int
t
,
IntPropLevel
) {
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using namespace
Int;
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Limits::check
(s,
"Int::precede"
);
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Limits::check
(
t
,
"Int::precede"
);
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GECODE_POST
;
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ViewArray<IntView>
y
(home,
x
);
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GECODE_ES_FAIL
(
Precede::Single<IntView>::post
(home,
y
, s,
t
));
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}
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void
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precede
(
Home
home,
const
IntVarArgs
&
x
,
const
IntArgs
&
c
,
IntPropLevel
) {
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using namespace
Int;
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if
(
c
.
size
() < 2)
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return
;
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for
(
int
i
=
c
.
size
();
i
--; )
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Limits::check
(
c
[
i
],
"Int::precede"
);
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GECODE_POST
;
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for
(
int
i
=
c
.
size
()-1;
i
--; ) {
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ViewArray<IntView>
y
(home,
x
);
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GECODE_ES_FAIL
(
Precede::Single<IntView>::post
(home,
y
,
c
[
i
],
c
[
i
+1]));
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}
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}
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}
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// STATISTICS: int-post
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Gecode::Int::Precede::Single
Single value precedence propagator.
Definition:
precede.hh:61
Gecode::x
Post propagator for SetVar x
Definition:
set.hh:767
Gecode::y
Post propagator for SetVar SetOpType SetVar y
Definition:
set.hh:767
GECODE_ES_FAIL
#define GECODE_ES_FAIL(es)
Check whether execution status es is failed, and fail space home.
Definition:
macros.hpp:103
Gecode::IntVarArgs
Passing integer variables.
Definition:
int.hh:656
t
NodeType t
Type of node.
Definition:
bool-expr.cpp:230
Gecode::Int::Limits::check
void check(int n, const char *l)
Check whether n is in range, otherwise throw out of limits with information l.
Definition:
limits.hpp:46
Gecode::IntPropLevel
IntPropLevel
Propagation levels for integer propagators.
Definition:
int.hh:974
Gecode
Gecode toplevel namespace
Gecode::Home
Home class for posting propagators
Definition:
core.hpp:856
Gecode::FloatVal::size
FloatNum size(void) const
Return size of float value (distance between maximum and minimum)
Definition:
val.hpp:78
Gecode::precede
void precede(Home home, const IntVarArgs &x, int s, int t, IntPropLevel)
Post propagator that s precedes t in x.
Definition:
precede.cpp:43
GECODE_POST
#define GECODE_POST
Check for failure in a constraint post function.
Definition:
macros.hpp:40
precede.hh
Test::Float::Arithmetic::c
Gecode::FloatVal c(-8, 8)
Gecode::ViewArray< IntView >
Gecode::IntArgs
Passing integer arguments.
Definition:
int.hh:628
Test::Int::Basic::i
Gecode::IntArgs i({1, 2, 3, 4})