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gecode
int
dom
range.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, 2004
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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
Dom {
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template
<
class
View, ReifyMode rm>
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forceinline
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ReRange<View,rm>::ReRange
(
Home
home, View
x
,
int
min0,
int
max0,
BoolView
b
)
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:
ReUnaryPropagator
<View,
PC_INT_DOM
,
BoolView
>(home,
x
,
b
),
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min
(min0),
max
(max0) {}
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template
<
class
View, ReifyMode rm>
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ExecStatus
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ReRange<View,rm>::post
(
Home
home, View
x
,
int
min
,
int
max
,
BoolView
b
) {
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if
(
min
==
max
) {
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return
Rel::ReEqDomInt<View,BoolView,rm>::post
(home,
x
,
min
,
b
);
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}
else
if
((
min
>
max
) || (
max
<
x
.min()) || (
min
>
x
.max())) {
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if
(rm ==
RM_PMI
)
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return
ES_OK
;
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GECODE_ME_CHECK
(
b
.zero(home));
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}
else
if
((
min
<=
x
.min()) && (
x
.max() <=
max
)) {
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if
(rm ==
RM_IMP
)
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return
ES_OK
;
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GECODE_ME_CHECK
(
b
.one(home));
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}
else
if
(
b
.one()) {
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if
(rm ==
RM_PMI
)
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return
ES_OK
;
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GECODE_ME_CHECK
(
x
.gq(home,
min
));
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GECODE_ME_CHECK
(
x
.lq(home,
max
));
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}
else
if
(
b
.zero()) {
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if
(rm ==
RM_IMP
)
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return
ES_OK
;
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Iter::Ranges::Singleton
r
(
min
,
max
);
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GECODE_ME_CHECK
(
x
.minus_r(home,
r
,
false
));
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}
else
{
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(void)
new
(home)
ReRange<View,rm>
(home,
x
,
min
,
max
,
b
);
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}
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return
ES_OK
;
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}
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template
<
class
View, ReifyMode rm>
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forceinline
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ReRange<View,rm>::ReRange
(
Space
& home,
ReRange
&
p
)
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:
ReUnaryPropagator
<View,
PC_INT_DOM
,
BoolView
>(home,
p
),
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min
(
p
.
min
),
max
(
p
.
max
) {}
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template
<
class
View, ReifyMode rm>
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Actor
*
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ReRange<View,rm>::copy
(
Space
& home) {
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return
new
(home)
ReRange<View,rm>
(home,*
this
);
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}
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template
<
class
View, ReifyMode rm>
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ExecStatus
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ReRange<View,rm>::propagate
(
Space
& home,
const
ModEventDelta
&) {
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if
(
b
.one()) {
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if
(rm !=
RM_PMI
) {
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GECODE_ME_CHECK
(x0.gq(home,
min
));
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GECODE_ME_CHECK
(x0.lq(home,
max
));
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}
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return
home.
ES_SUBSUMED
(*
this
);
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}
else
if
(
b
.zero()) {
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if
(rm !=
RM_IMP
) {
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Iter::Ranges::Singleton
r
(
min
,
max
);
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GECODE_ME_CHECK
(x0.minus_r(home,
r
,
false
));
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}
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return
home.
ES_SUBSUMED
(*
this
);
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}
else
if
((x0.max() <=
max
) && (x0.min() >=
min
)) {
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if
(rm !=
RM_IMP
)
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GECODE_ME_CHECK
(
b
.one_none(home));
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return
home.
ES_SUBSUMED
(*
this
);
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}
else
if
((x0.max() <
min
) || (x0.min() >
max
)) {
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if
(rm !=
RM_PMI
)
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GECODE_ME_CHECK
(
b
.zero_none(home));
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return
home.
ES_SUBSUMED
(*
this
);
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}
else
if
(!x0.range()) {
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ViewRanges<View>
i_x(x0);
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Iter::Ranges::Singleton
i_mm(
min
,
max
);
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switch
(
Iter::Ranges::compare
(i_x,i_mm)) {
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case
Iter::Ranges::CS_SUBSET
:
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if
(rm !=
RM_IMP
)
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GECODE_ME_CHECK
(
b
.one_none(home));
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return
home.
ES_SUBSUMED
(*
this
);
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case
Iter::Ranges::CS_DISJOINT
:
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if
(rm !=
RM_PMI
)
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GECODE_ME_CHECK
(
b
.zero_none(home));
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return
home.
ES_SUBSUMED
(*
this
);
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case
Iter::Ranges::CS_NONE
:
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break
;
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default
:
GECODE_NEVER
;
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}
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return
ES_FIX
;
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}
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return
ES_FIX
;
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}
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}}}
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// STATISTICS: int-prop
134
Gecode::x
Post propagator for SetVar x
Definition:
set.hh:767
Gecode::RM_PMI
@ RM_PMI
Inverse implication for reification.
Definition:
int.hh:869
Gecode::Int::Rel::ReEqDomInt::post
static ExecStatus post(Home home, View x, int c, CtrlView b)
Post domain consistent propagator .
Definition:
eq.hpp:644
Gecode::Int::Dom::ReRange
Reified range dom-propagator.
Definition:
dom.hh:56
Gecode::max
void max(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition:
arithmetic.cpp:49
Gecode::Space::ES_SUBSUMED
ExecStatus ES_SUBSUMED(Propagator &p)
Definition:
core.hpp:3563
Gecode::Iter::Ranges::CS_NONE
@ CS_NONE
Neither of the above.
Definition:
ranges-operations.hpp:63
Gecode::Int::Dom::ReRange::copy
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition:
range.hpp:82
Gecode::RM_IMP
@ RM_IMP
Implication for reification.
Definition:
int.hh:862
Gecode::Space
Computation spaces.
Definition:
core.hpp:1742
Gecode::Actor
Base-class for both propagators and branchers.
Definition:
core.hpp:628
Gecode::Int::ReUnaryPropagator
Reified unary propagator.
Definition:
propagator.hpp:54
Gecode::Int::Dom::ReRange::post
static ExecStatus post(Home home, View x, int min, int max, BoolView b)
Post propagator for .
Definition:
range.hpp:46
Gecode::Int::BoolView
Boolean view for Boolean variables.
Definition:
view.hpp:1380
Gecode
Gecode toplevel namespace
Gecode::Iter::Ranges::CS_SUBSET
@ CS_SUBSET
First is subset of second iterator.
Definition:
ranges-operations.hpp:61
Gecode::Int::ViewRanges
Range iterator for integer views.
Definition:
view.hpp:54
Gecode::Home
Home class for posting propagators
Definition:
core.hpp:856
Gecode::r
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition:
set.hh:767
b
struct Gecode::@602::NNF::@65::@66 b
For binary nodes (and, or, eqv)
GECODE_NEVER
#define GECODE_NEVER
Assert that this command is never executed.
Definition:
macros.hpp:56
rel.hh
Gecode::Int::Dom::ReRange::ReRange
ReRange(Space &home, ReRange &p)
Constructor for cloning p.
Definition:
range.hpp:76
Gecode::ES_FIX
@ ES_FIX
Propagation has computed fixpoint.
Definition:
core.hpp:477
forceinline
#define forceinline
Definition:
config.hpp:185
Gecode::Int::Dom::ReRange::propagate
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition:
range.hpp:88
Gecode::Iter::Ranges::Singleton
Range iterator for singleton range.
Definition:
ranges-singleton.hpp:42
GECODE_ME_CHECK
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition:
macros.hpp:52
Gecode::min
void min(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition:
arithmetic.cpp:67
Gecode::Int::PC_INT_DOM
const Gecode::PropCond PC_INT_DOM
Propagate when domain changes.
Definition:
var-type.hpp:100
Gecode::ModEventDelta
int ModEventDelta
Modification event deltas.
Definition:
core.hpp:89
Gecode::Iter::Ranges::compare
CompareStatus compare(I &i, J &j)
Check whether range iterator i is a subset of j, or whether they are disjoint.
Definition:
ranges-operations.hpp:127
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::Iter::Ranges::CS_DISJOINT
@ CS_DISJOINT
Intersection is empty.
Definition:
ranges-operations.hpp:62
Gecode::ExecStatus
ExecStatus
Definition:
core.hpp:472