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1.8.20
gecode
int
channel
link-single.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, 2007
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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 {
namespace
Channel {
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forceinline
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LinkSingle::LinkSingle(Home home, BoolView x0, IntView x1)
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: MixBinaryPropagator<BoolView,
PC_BOOL_VAL
,IntView,
PC_INT_VAL
>
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(home,x0,x1) {}
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forceinline
ExecStatus
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LinkSingle::post
(
Home
home,
BoolView
x0,
IntView
x1) {
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if
(
x1
.
assigned
()) {
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switch
(
x1
.
val
()) {
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case
0:
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GECODE_ME_CHECK
(
x0
.
zero
(home));
break
;
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case
1:
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GECODE_ME_CHECK
(
x0
.
one
(home));
break
;
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default
:
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return
ES_FAILED
;
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}
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}
else
if
(
x0
.
zero
()) {
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GECODE_ME_CHECK
(
x1
.
eq
(home,0));
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}
else
if
(
x0
.
one
()) {
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GECODE_ME_CHECK
(
x1
.
eq
(home,1));
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}
else
{
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GECODE_ME_CHECK
(
x1
.
gq
(home,0));
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GECODE_ME_CHECK
(
x1
.
lq
(home,1));
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(void)
new
(home)
LinkSingle
(home,
x0
,
x1
);
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}
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return
ES_OK
;
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}
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}}}
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// STATISTICS: int-prop
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Gecode::Int::BoolView::zero
bool zero(void) const
Test whether view is assigned to be zero.
Definition:
bool.hpp:220
Gecode::Int::PC_BOOL_VAL
const Gecode::PropCond PC_BOOL_VAL
Propagate when a view becomes assigned (single value)
Definition:
var-type.hpp:126
Gecode::VarImpView::assigned
bool assigned(void) const
Test whether view is assigned.
Definition:
view.hpp:516
Gecode::Int::Channel::LinkSingle::post
static ExecStatus post(Home home, BoolView x0, IntView x1)
Post propagator for .
Definition:
link-single.hpp:42
Gecode::MixBinaryPropagator< BoolView, PC_BOOL_VAL, IntView, PC_INT_VAL >::x0
BoolView x0
View of type View0.
Definition:
pattern.hpp:207
Gecode::Int::BoolView::one
bool one(void) const
Test whether view is assigned to be one.
Definition:
bool.hpp:224
Gecode::Int::Channel::LinkSingle
Link propagator for a single Boolean view.
Definition:
channel.hh:171
Gecode::MixBinaryPropagator< BoolView, PC_BOOL_VAL, IntView, PC_INT_VAL >::x1
IntView x1
View of type View1.
Definition:
pattern.hpp:209
Gecode::Int::BoolView
Boolean view for Boolean variables.
Definition:
view.hpp:1380
Gecode
Gecode toplevel namespace
Gecode::Int::IntView::val
int val(void) const
Return assigned value (only if assigned)
Definition:
int.hpp:70
Gecode::Home
Home class for posting propagators
Definition:
core.hpp:856
Gecode::Int::PC_INT_VAL
const Gecode::PropCond PC_INT_VAL
Propagate when a view becomes assigned (single value)
Definition:
var-type.hpp:82
Gecode::Int::IntView
Integer view for integer variables.
Definition:
view.hpp:129
forceinline
#define forceinline
Definition:
config.hpp:192
GECODE_ME_CHECK
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition:
macros.hpp:52
Gecode::Int::IntView::lq
ModEvent lq(Space &home, int n)
Restrict domain values to be less or equal than n.
Definition:
int.hpp:121
Gecode::Int::IntView::gq
ModEvent gq(Space &home, int n)
Restrict domain values to be greater or equal than n.
Definition:
int.hpp:139
Gecode::ES_FAILED
@ ES_FAILED
Execution has resulted in failure.
Definition:
core.hpp:474
Gecode::ES_OK
@ ES_OK
Execution is okay.
Definition:
core.hpp:476
Gecode::Int::IntView::eq
ModEvent eq(Space &home, int n)
Restrict domain values to be equal to n.
Definition:
int.hpp:166
Gecode::ExecStatus
ExecStatus
Definition:
core.hpp:472