/usr/include/gecode/float/arithmetic/div.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:
* Guido Tack <tack@gecode.org>
* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
*
* Copyright:
* Guido Tack, 2008
* Vincent Barichard, 2012
*
* Last modified:
* $Date: 2012-07-20 14:50:03 +0200 (Fri, 20 Jul 2012) $ by $Author: vbarichard $
* $Revision: 12964 $
*
* 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 Float { namespace Arithmetic {
/*
* Bounds consistent division operator
*
*/
template<class A, class B, class C>
forceinline
Div<A,B,C>::Div(Home home, A x0, B x1, C x2)
: MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>(home,x0,x1,x2) {}
template<class A, class B, class C>
forceinline
Div<A,B,C>::Div(Space& home, bool share, Div<A,B,C>& p)
: MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>(home,share,p) {}
template<class A, class B, class C>
Actor*
Div<A,B,C>::copy(Space& home, bool share) {
return new (home) Div<A,B,C>(home,share,*this);
}
template<class A, class B, class C>
ExecStatus
Div<A,B,C>::post(Home home, A x0, B x1, C x2) {
(void) new (home) Div<A,B,C>(home,x0,x1,x2);
return ES_OK;
}
template<class A, class B, class C>
ExecStatus
Div<A,B,C>::propagate(Space& home, const ModEventDelta&) {
if (x1.assigned() && (x1.val() == 0)) return ES_FAILED;
GECODE_ME_CHECK(x2.eq(home,x0.domain() / x1.domain()));
GECODE_ME_CHECK(x0.eq(home,x2.domain() * x1.domain()));
if (!x2.assigned() || (x2.val() != 0)) GECODE_ME_CHECK(x1.eq(home,x0.domain() / x2.domain()));
return (x0.assigned() && x1.assigned()) ? home.ES_SUBSUMED(*this) : ES_NOFIX;
}
}}}
// STATISTICS: float-prop
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