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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Filip Konvicka <filip.konvicka@logis.cz> * Lubomir Moric <lubomir.moric@logis.cz> * Vincent Barichard <Vincent.Barichard@univ-angers.fr> * * Contributing authors: * Christian Schulte <schulte@gecode.org> * * Copyright: * LOGIS, s.r.o., 2008 * Christian Schulte, 2010 * 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 {
/* * Creation of new variable implementations * */
forceinline FloatVarImp::FloatVarImp(Space& home, const FloatVal& d) : FloatVarImpBase(home), dom(d) {}
forceinline FloatVarImp::FloatVarImp(Space& home, FloatVarImp& x) : FloatVarImpBase(home, x), dom(x.dom) {}
/* * Operations on float variable implementations * */
forceinline FloatVal FloatVarImp::domain(void) const { return dom; } forceinline FloatNum FloatVarImp::min(void) const { return dom.min(); } forceinline FloatNum FloatVarImp::max(void) const { return dom.max(); } forceinline FloatVal FloatVarImp::val(void) const { return dom; } forceinline FloatNum FloatVarImp::med(void) const { return dom.med(); }
forceinline bool FloatVarImp::assigned(void) const { return dom.tight(); }
forceinline FloatNum FloatVarImp::size(void) const { return dom.size(); }
/* * Tests * */
forceinline bool FloatVarImp::zero_in(void) const { return dom.zero_in(); } forceinline bool FloatVarImp::in(FloatNum n) const { return dom.in(n); } forceinline bool FloatVarImp::in(const FloatVal& n) const { return subset(n,dom); }
/* * Support for delta information * */ forceinline FloatNum FloatVarImp::min(const Delta& d) { return static_cast<const FloatDelta&>(d).min(); } forceinline FloatNum FloatVarImp::max(const Delta& d) { return static_cast<const FloatDelta&>(d).max(); }
/* * Tell operations (to be inlined: performing bounds checks first) * */
forceinline ModEvent FloatVarImp::gq(Space& home, FloatNum n) { if (n > dom.max()) return fail(home); if ((n <= dom.min()) || assigned()) return ME_FLOAT_NONE; FloatDelta d(dom.min(),n); ModEvent me = ME_FLOAT_BND; dom = intersect(dom,FloatVal(n,dom.max())); if (assigned()) me = ME_FLOAT_VAL; GECODE_ASSUME((me == ME_FLOAT_VAL) | (me == ME_FLOAT_BND)); return notify(home,me,d); } forceinline ModEvent FloatVarImp::gq(Space& home, const FloatVal& n) { if (n.min() > dom.max()) return fail(home); if ((n.min() <= dom.min()) || assigned()) return ME_FLOAT_NONE; FloatDelta d(dom.min(),n.min()); ModEvent me = ME_FLOAT_BND; dom = intersect(dom,FloatVal(n.min(),dom.max())); if (assigned()) me = ME_FLOAT_VAL; GECODE_ASSUME((me == ME_FLOAT_VAL) | (me == ME_FLOAT_BND)); return notify(home,me,d); }
forceinline ModEvent FloatVarImp::lq(Space& home, FloatNum n) { if (n < dom.min()) return fail(home); if ((n >= dom.max()) || assigned()) return ME_FLOAT_NONE; FloatDelta d(n,dom.max()); ModEvent me = ME_FLOAT_BND; dom = intersect(dom,FloatVal(dom.min(),n)); if (assigned()) me = ME_FLOAT_VAL; GECODE_ASSUME((me == ME_FLOAT_VAL) | (me == ME_FLOAT_BND)); return notify(home,me,d); } forceinline ModEvent FloatVarImp::lq(Space& home, const FloatVal& n) { if (n.max() < dom.min()) return fail(home); if ((n.max() >= dom.max()) || assigned()) return ME_FLOAT_NONE; FloatDelta d(n.max(),dom.max()); ModEvent me = ME_FLOAT_BND; dom = intersect(dom,FloatVal(dom.min(),n.max())); if (assigned()) me = ME_FLOAT_VAL; GECODE_ASSUME((me == ME_FLOAT_VAL) | (me == ME_FLOAT_BND)); return notify(home,me,d); }
forceinline ModEvent FloatVarImp::eq(Space& home, FloatNum n) { if (!dom.in(n)) return fail(home); if (assigned()) return ME_FLOAT_NONE; FloatDelta d; dom = n; return notify(home,ME_FLOAT_VAL,d); } forceinline ModEvent FloatVarImp::eq(Space& home, const FloatVal& n) { if (!overlap(dom,n)) return fail(home); if (assigned() || subset(dom,n)) return ME_FLOAT_NONE; FloatDelta d; ModEvent me = ME_FLOAT_BND; dom = intersect(dom,n); if (assigned()) me = ME_FLOAT_VAL; GECODE_ASSUME((me == ME_FLOAT_VAL) | (me == ME_FLOAT_BND)); return notify(home,me,d); }
/* * Copying a variable * */
forceinline FloatVarImp* FloatVarImp::copy(Space& home) { return copied() ? static_cast<FloatVarImp*>(forward()) : perform_copy(home); }
/// Return copy of not-yet copied variable forceinline FloatVarImp* FloatVarImp::perform_copy(Space& home) { return new (home) FloatVarImp(home, *this); }
forceinline ModEventDelta FloatVarImp::med(ModEvent me) { return FloatVarImpBase::med(me); }
}}
// STATISTICS: float-var