/usr/include/gecode/int/channel/link-single.hpp is in libgecode-dev 4.4.0-3.
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: 2009-10-12 17:36:53 +0200 (Mon, 12 Oct 2009) $ by $Author: schulte $
* $Revision: 9878 $
*
* 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
LinkSingle::LinkSingle(Home home, BoolView x0, IntView x1)
: MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL>
(home,x0,x1) {}
forceinline ExecStatus
LinkSingle::post(Home home, BoolView x0, IntView x1) {
if (x1.assigned()) {
switch (x1.val()) {
case 0:
GECODE_ME_CHECK(x0.zero(home)); break;
case 1:
GECODE_ME_CHECK(x0.one(home)); break;
default:
return ES_FAILED;
}
} else if (x0.zero()) {
GECODE_ME_CHECK(x1.eq(home,0));
} else if (x0.one()) {
GECODE_ME_CHECK(x1.eq(home,1));
} else {
GECODE_ME_CHECK(x1.gq(home,0));
GECODE_ME_CHECK(x1.lq(home,1));
(void) new (home) LinkSingle(home,x0,x1);
}
return ES_OK;
}
}}}
// STATISTICS: int-prop
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