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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Christian Schulte <schulte@gecode.org> * * Copyright: * Christian Schulte, 2016 * * 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/float/rel.hh>
namespace Gecode { namespace Float { namespace Bool {
template<class View> forceinline Ite<View>::Ite(Home home, Int::BoolView b0, View y0, View y1, View y2) : Propagator(home), b(b0), x0(y0), x1(y1), x2(y2) { b.subscribe(home,*this,Int::PC_BOOL_VAL); x0.subscribe(home,*this,PC_FLOAT_BND); x1.subscribe(home,*this,PC_FLOAT_BND); x2.subscribe(home,*this,PC_FLOAT_BND); }
template<class View> forceinline Ite<View>::Ite(Space& home, Ite<View>& p) : Propagator(home,p) { b.update(home,p.b); x0.update(home,p.x0); x1.update(home,p.x1); x2.update(home,p.x2); }
template<class View> PropCost Ite<View>::cost(const Space&, const ModEventDelta&) const { return PropCost::ternary(PropCost::LO); }
template<class View> void Ite<View>::reschedule(Space& home) { b.reschedule(home,*this,Int::PC_BOOL_VAL); x0.reschedule(home,*this,PC_FLOAT_BND); x1.reschedule(home,*this,PC_FLOAT_BND); x2.reschedule(home,*this,PC_FLOAT_BND); }
template<class View> forceinline size_t Ite<View>::dispose(Space& home) { b.cancel(home,*this,Int::PC_BOOL_VAL); x0.cancel(home,*this,PC_FLOAT_BND); x1.cancel(home,*this,PC_FLOAT_BND); x2.cancel(home,*this,PC_FLOAT_BND); (void) Propagator::dispose(home); return sizeof(*this); }
template<class View> Actor* Ite<View>::copy(Space& home) { return new (home) Ite<View>(home,*this); }
template<class View> inline ExecStatus Ite<View>::post(Home home, Int::BoolView b, View x0, View x1, View x2) { if (b.one()) return Rel::Eq<View,View>::post(home,x2,x0); if (b.zero()) return Rel::Eq<View,View>::post(home,x2,x1); GECODE_ME_CHECK(x2.lq(home,std::max(x0.max(),x1.max()))); GECODE_ME_CHECK(x2.gq(home,std::min(x0.min(),x1.min()))); (void) new (home) Ite<View>(home,b,x0,x1,x2); return ES_OK; }
template<class View> ExecStatus Ite<View>::propagate(Space& home, const ModEventDelta&) { if (b.one()) GECODE_REWRITE(*this,(Rel::Eq<View,View>::post(home(*this),x2,x0))); if (b.zero()) GECODE_REWRITE(*this,(Rel::Eq<View,View>::post(home(*this),x2,x1)));
GECODE_ME_CHECK(x2.lq(home,std::max(x0.max(),x1.max()))); GECODE_ME_CHECK(x2.gq(home,std::min(x0.min(),x1.min())));
RelTest eq20 = rtest_eq(x2,x0); RelTest eq21 = rtest_eq(x2,x1);
if ((eq20 == RT_FALSE) && (eq21 == RT_FALSE)) return ES_FAILED;
if (eq20 == RT_FALSE) { GECODE_ME_CHECK(b.zero_none(home)); if (eq21 == RT_TRUE) return home.ES_SUBSUMED(*this); else GECODE_REWRITE(*this,(Rel::Eq<View,View>::post(home(*this),x2,x1))); }
if (eq21 == RT_FALSE) { GECODE_ME_CHECK(b.one_none(home)); if (eq20 == RT_TRUE) return home.ES_SUBSUMED(*this); else GECODE_REWRITE(*this,(Rel::Eq<View,View>::post(home(*this),x2,x0))); }
if ((eq20 == RT_TRUE) && (eq21 == RT_TRUE)) return home.ES_SUBSUMED(*this);
return ES_FIX; }
}}}
// STATISTICS: float-prop