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gecode
int
element
pair.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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#include <
gecode/int/rel.hh
>
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namespace
Gecode
{
namespace
Int {
namespace
Element {
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forceinline
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Pair::Pair
(
Home
home,
IntView
x0,
IntView
x1,
IntView
x2,
int
w0)
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:
TernaryPropagator
<
IntView
,
PC_INT_DOM
>(home,x0,x1,x2), w(w0) {}
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inline
ExecStatus
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Pair::post
(
Home
home,
IntView
x0,
IntView
x1,
IntView
x2,
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int
w,
int
h) {
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GECODE_ME_CHECK
(
x0
.
gq
(home,0));
GECODE_ME_CHECK
(
x0
.
le
(home,
w
));
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GECODE_ME_CHECK
(
x1
.
gq
(home,0));
GECODE_ME_CHECK
(
x1
.
le
(home,h));
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GECODE_ME_CHECK
(
x2
.
gq
(home,0));
GECODE_ME_CHECK
(
x2
.
le
(home,
w
*h));
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if
(
x0
.
assigned
() &&
x1
.
assigned
()) {
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GECODE_ME_CHECK
(
x2
.
eq
(home,
x0
.
val
()+
w
*
x1
.
val
()));
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}
else
if
(
x1
.
assigned
()) {
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OffsetView
x0x1w(
x0
,
x1
.
val
()*
w
);
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return
Rel::EqDom<OffsetView,IntView>::post
(home,x0x1w,
x2
);
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}
else
if
(
x2
.
assigned
()) {
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GECODE_ME_CHECK
(
x0
.
eq
(home,
x2
.
val
() %
w
));
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GECODE_ME_CHECK
(
x1
.
eq
(home,
static_cast<
int
>
(
x2
.
val
() /
w
)));
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}
else
{
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assert(!
shared
(
x0
,
x2
) && !
shared
(
x1
,
x2
));
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(void)
new
(home)
Pair
(home,
x0
,
x1
,
x2
,
w
);
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}
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return
ES_OK
;
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}
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forceinline
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Pair::Pair
(
Space
& home,
Pair
&
p
)
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:
TernaryPropagator
<
IntView
,
PC_INT_DOM
>(home,
p
), w(
p
.w) {}
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}}}
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// STATISTICS: int-prop
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Gecode::VarImpView::assigned
bool assigned(void) const
Test whether view is assigned.
Definition:
view.hpp:516
Gecode::TernaryPropagator< IntView, PC_INT_DOM >::x1
IntView x1
Definition:
pattern.hpp:116
Gecode::Int::Element::Pair
Domain consistent pair propagator.
Definition:
element.hh:298
Gecode::Int::Rel::EqDom::post
static ExecStatus post(Home home, View0 x0, View1 x1)
Post domain consistent propagator .
Definition:
eq.hpp:176
Gecode::Space
Computation spaces.
Definition:
core.hpp:1742
Gecode::Int::Element::Pair::w
int w
Width.
Definition:
element.hh:304
Gecode::Int::Element::Pair::post
static ExecStatus post(Home home, IntView x0, IntView x1, IntView x2, int w, int h)
Post propagator .
Definition:
pair.hpp:43
Gecode::TernaryPropagator< IntView, PC_INT_DOM >::x2
IntView x2
Definition:
pattern.hpp:116
Gecode
Gecode toplevel namespace
Gecode::Int::Element::Pair::Pair
Pair(Space &home, Pair &p)
Constructor for cloning p.
Definition:
pair.hpp:64
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::TernaryPropagator
Ternary propagator.
Definition:
pattern.hpp:113
Gecode::TernaryPropagator< IntView, PC_INT_DOM >::x0
IntView x0
Three views.
Definition:
pattern.hpp:116
Gecode::Int::OffsetView
Offset integer view.
Definition:
view.hpp:443
rel.hh
Gecode::shared
bool shared(ViewArray< ViewX > x, ViewArray< ViewY > y)
Definition:
array.hpp:1466
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::gq
ModEvent gq(Space &home, int n)
Restrict domain values to be greater or equal than n.
Definition:
int.hpp:139
Gecode::Int::PC_INT_DOM
const Gecode::PropCond PC_INT_DOM
Propagate when domain changes.
Definition:
var-type.hpp:100
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::Int::IntView::le
ModEvent le(Space &home, int n)
Restrict domain values to be less than n.
Definition:
int.hpp:130
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