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1.8.1.2
gecode
int
channel
link-multi.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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* Last modified:
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* $Date: 2012-02-22 16:04:20 +1100 (Wed, 22 Feb 2012) $ by $Author: tack $
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* $Revision: 12537 $
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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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LinkMulti::LinkMulti(Home home, ViewArray<BoolView>& x, IntView y,
int
o0)
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: MixNaryOnePropagator<BoolView,
PC_BOOL_NONE
,IntView,
PC_INT_DOM
>
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(home,x,y),
c
(home), status(S_NONE), o(o0) {
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x.subscribe(home,*
new
(home)
Advisor
(home,*
this
,c));
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// Propagator is scheduled because of the dependency subscription
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}
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forceinline
ExecStatus
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LinkMulti::post
(
Home
home,
ViewArray<BoolView>
& x,
IntView
y,
int
o) {
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int
n=x.
size
();
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GECODE_ME_CHECK
(y.
gq
(home,o));
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GECODE_ME_CHECK
(y.
lq
(home,o+n-1));
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assert(n > 0);
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if
(n == 1) {
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GECODE_ME_CHECK
(x[0].
one
(home));
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assert(y.
val
() == o);
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}
else
if
(y.
assigned
()) {
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int
j=y.
val
()-o;
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GECODE_ME_CHECK
(x[j].
one
(home));
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for
(
int
i
=0;
i
<j;
i
++)
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GECODE_ME_CHECK
(x[
i
].zero(home));
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for
(
int
i
=j+1;
i
<n;
i
++)
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GECODE_ME_CHECK
(x[
i
].zero(home));
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}
else
{
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for
(
int
i
=n;
i
--; )
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if
(x[
i
].
one
()) {
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for
(
int
j=0; j<
i
; j++)
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GECODE_ME_CHECK
(x[j].zero(home));
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for
(
int
j=i+1; j<n; j++)
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GECODE_ME_CHECK
(x[j].zero(home));
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GECODE_ME_CHECK
(y.
eq
(home,o+i));
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return
ES_OK
;
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}
else
if
(x[
i
].zero()) {
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GECODE_ME_CHECK
(y.
nq
(home,o+
i
));
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}
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(void)
new
(home)
LinkMulti
(home,x,y,o);
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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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