/usr/include/gecode/int/element/pair.hpp is in libgecode-dev 4.4.0-5.
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, 2009
*
* Last modified:
* $Date: 2009-10-29 14:58:00 +0100 (Thu, 29 Oct 2009) $ by $Author: schulte $
* $Revision: 10000 $
*
* 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.
*
*/
#include <gecode/int/rel.hh>
namespace Gecode { namespace Int { namespace Element {
forceinline
Pair::Pair(Home home, IntView x0, IntView x1, IntView x2, int w0)
: TernaryPropagator<IntView,PC_INT_DOM>(home,x0,x1,x2), w(w0) {}
inline ExecStatus
Pair::post(Home home, IntView x0, IntView x1, IntView x2,
int w, int h) {
GECODE_ME_CHECK(x0.gq(home,0)); GECODE_ME_CHECK(x0.le(home,w));
GECODE_ME_CHECK(x1.gq(home,0)); GECODE_ME_CHECK(x1.le(home,h));
GECODE_ME_CHECK(x2.gq(home,0)); GECODE_ME_CHECK(x2.le(home,w*h));
if (x0.assigned() && x1.assigned()) {
GECODE_ME_CHECK(x2.eq(home,x0.val()+w*x1.val()));
} else if (x1.assigned()) {
OffsetView x0x1w(x0,x1.val()*w);
return Rel::EqDom<OffsetView,IntView>::post(home,x0x1w,x2);
} else if (x2.assigned()) {
GECODE_ME_CHECK(x0.eq(home,x2.val() % w));
GECODE_ME_CHECK(x1.eq(home,static_cast<int>(x2.val() / w)));
} else {
assert(!shared(x0,x2) && !shared(x1,x2));
(void) new (home) Pair(home,x0,x1,x2,w);
}
return ES_OK;
}
forceinline
Pair::Pair(Space& home, bool share, Pair& p)
: TernaryPropagator<IntView,PC_INT_DOM>(home,share,p), w(p.w) {}
}}}
// STATISTICS: int-prop
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