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2.9 kB · 81 lines
C++
at develop
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Guido Tack <tack@gecode.org> * Vincent Barichard <Vincent.Barichard@univ-angers.fr> * * Copyright: * Guido Tack, 2008 * Vincent Barichard, 2012 * * 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, Div<A,B,C>& p) : MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>(home,p) {}
template<class A, class B, class C> Actor* Div<A,B,C>::copy(Space& home) { return new (home) Div<A,B,C>(home,*this); }
template<class A, class B, class C> ExecStatus Div<A,B,C>::post(Home home, A x0, B x1, C x2) { GECODE_ME_CHECK(x2.eq(home,x0.domain() / x1.domain())); GECODE_ME_CHECK(x0.eq(home,x2.domain() * x1.domain())); (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() != 0.0)) GECODE_ME_CHECK(x1.eq(home,x0.domain() / x2.domain())); return (x0.assigned() && x1.assigned()) ? home.ES_SUBSUMED(*this) : ES_NOFIX; }
}}}
// STATISTICS: float-prop