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1.8.16
gecode
int
order
propagate.hpp
Go to the documentation of this file.
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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, 2019
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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
Order {
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forceinline
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OrderProp::OrderProp
(
Home
home,
IntView
_s0,
int
_p0,
IntView
_s1,
int
_p1,
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BoolView
_b
)
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:
Propagator
(home), s0(_s0), s1(_s1),
b
(
_b
), p0(_p0), p1(_p1) {
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s0
.
subscribe
(home,*
this
,
PC_INT_BND
);
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s1
.
subscribe
(home,*
this
,
PC_INT_BND
);
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b
.
subscribe
(home,*
this
,
PC_INT_VAL
);
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}
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forceinline
ExecStatus
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OrderProp::post
(
Home
home,
IntView
s0,
int
p0,
IntView
s1,
int
p1,
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BoolView
b
) {
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if
(
s0
.
max
() +
p0
<=
s1
.
min
()) {
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GECODE_ME_CHECK
(
b
.
zero
(home));
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}
else
if
(
s1
.
max
() +
p1
<=
s0
.
min
()) {
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GECODE_ME_CHECK
(
b
.
one
(home));
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}
else
if
((
s1
.
min
() +
p1
>
s0
.
max
()) ||
b
.
zero
()) {
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GECODE_ME_CHECK
(
b
.
zero
(home));
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return
Rel::Lq<OffsetView,IntView>::post
(home,
OffsetView
(
s0
,
p0
),
s1
);
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}
else
if
((
s0
.
min
() +
p0
>
s1
.
max
()) ||
b
.
one
()) {
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GECODE_ME_CHECK
(
b
.
one
(home));
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return
Rel::Lq<OffsetView,IntView>::post
(home,
OffsetView
(
s1
,
p1
),
s0
);
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}
else
{
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(void)
new
(home)
OrderProp
(home,
s0
,
p0
,
s1
,
p1
,
b
);
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}
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return
ES_OK
;
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}
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forceinline
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OrderProp::OrderProp
(
Space
& home,
OrderProp
&
p
)
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:
Propagator
(home,
p
), p0(
p
.p0), p1(
p
.p1) {
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s0
.
update
(home,
p
.s0);
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s1
.
update
(home,
p
.s1);
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b
.
update
(home,
p
.b);
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}
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}}}
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// STATISTICS: int-prop
b
struct Gecode::@602::NNF::@65::@66 b
For binary nodes (and, or, eqv)
Gecode::Int::Order::OrderProp
Scheduling propagator for ordering two tasks
Definition:
order.hh:53
Gecode::Int::BoolView::zero
bool zero(void) const
Test whether view is assigned to be zero.
Definition:
bool.hpp:220
Gecode::Int::IntView::min
int min(void) const
Return minimum of domain.
Definition:
int.hpp:58
Gecode::Int::Order::OrderProp::post
static ExecStatus post(Home home, IntView s0, int p0, IntView s1, int p1, BoolView b)
Post order propagator.
Definition:
propagate.hpp:48
Gecode::VarImpView::subscribe
void subscribe(Space &home, Propagator &p, PropCond pc, bool schedule=true)
Subscribe propagator p with propagation condition pc to view.
Definition:
view.hpp:521
Gecode::Int::BoolView::one
bool one(void) const
Test whether view is assigned to be one.
Definition:
bool.hpp:224
Test::Int::Precede::_b
Single _b(1, 4)
Gecode::Space
Computation spaces.
Definition:
core.hpp:1742
Gecode::VarImpView::update
void update(Space &home, VarImpView< Var > &y)
Update this view to be a clone of view y.
Definition:
view.hpp:567
Gecode::Int::Rel::Lq::post
static ExecStatus post(Home home, V0 x0, V1 x1)
Post propagator .
Definition:
lq-le.hpp:50
Gecode::Int::Order::OrderProp::p0
int p0
Processing times.
Definition:
order.hh:60
Gecode::Int::BoolView
Boolean view for Boolean variables.
Definition:
view.hpp:1380
Gecode
Gecode toplevel namespace
Gecode::Int::IntView::max
int max(void) const
Return maximum of domain.
Definition:
int.hpp:62
Gecode::Propagator
Base-class for propagators.
Definition:
core.hpp:1064
Gecode::Int::Order::OrderProp::s0
IntView s0
View for start times.
Definition:
order.hh:56
Gecode::Int::Order::OrderProp::p1
int p1
Definition:
order.hh:60
Gecode::Home
Home class for posting propagators
Definition:
core.hpp:856
Gecode::Int::Order::OrderProp::s1
IntView s1
Definition:
order.hh:56
Gecode::Int::OffsetView
Offset integer view.
Definition:
view.hpp:443
Gecode::Int::PC_INT_BND
const Gecode::PropCond PC_INT_BND
Propagate when minimum or maximum of a view changes.
Definition:
var-type.hpp:91
rel.hh
Gecode::Int::Order::OrderProp::b
BoolView b
Boolean view for order.
Definition:
order.hh:58
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:185
GECODE_ME_CHECK
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition:
macros.hpp:52
Gecode::Int::Order::OrderProp::OrderProp
OrderProp(Space &home, OrderProp &p)
Constructor for cloning.
Definition:
propagate.hpp:67
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