/usr/include/gecode/int/channel/link-multi.hpp is in libgecode-dev 4.2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2007
*
* Last modified:
* $Date: 2011-10-31 13:02:28 +0100 (Mon, 31 Oct 2011) $ by $Author: schulte $
* $Revision: 12450 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
namespace Gecode { namespace Int { namespace Channel {
forceinline
LinkMulti::LinkMulti(Home home, ViewArray<BoolView>& x, IntView y, int o0)
: MixNaryOnePropagator<BoolView,PC_BOOL_NONE,IntView,PC_INT_DOM>
(home,x,y), c(home), status(S_NONE), o(o0) {
x.subscribe(home,*new (home) Advisor(home,*this,c));
// Propagator is scheduled because of the dependency subscription
}
forceinline ExecStatus
LinkMulti::post(Home home, ViewArray<BoolView>& x, IntView y, int o) {
int n=x.size();
GECODE_ME_CHECK(y.gq(home,o));
GECODE_ME_CHECK(y.lq(home,o+n-1));
assert(n > 0);
if (n == 1) {
GECODE_ME_CHECK(x[0].one(home));
assert(y.val() == o);
} else if (y.assigned()) {
int j=y.val()-o;
GECODE_ME_CHECK(x[j].one(home));
for (int i=0; i<j; i++)
GECODE_ME_CHECK(x[i].zero(home));
for (int i=j+1; i<n; i++)
GECODE_ME_CHECK(x[i].zero(home));
} else {
for (int i=n; i--; )
if (x[i].one()) {
for (int j=0; j<i; j++)
GECODE_ME_CHECK(x[j].zero(home));
for (int j=i+1; j<n; j++)
GECODE_ME_CHECK(x[j].zero(home));
GECODE_ME_CHECK(y.eq(home,o+i));
return ES_OK;
} else if (x[i].zero()) {
GECODE_ME_CHECK(y.nq(home,o+i));
}
(void) new (home) LinkMulti(home,x,y,o);
}
return ES_OK;
}
}}}
// STATISTICS: int-prop
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