Jip J. Dekker
1d9faf38de
git-subtree-dir: software/gecode git-subtree-split: 313e87646da4fc2752a70e83df16d993121a8e40
139 lines
4.1 KiB
C++
Executable File
139 lines
4.1 KiB
C++
Executable File
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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*
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* Copyright:
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* Vincent Barichard, 2012
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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namespace Gecode { namespace Float { namespace Trigonometric {
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/*
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* Bounds consistent arc sinus operator
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*
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*/
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template<class A, class B>
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forceinline
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ASin<A,B>::ASin(Home home, A x0, B x1)
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: MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>(home,x0,x1) {}
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template<class A, class B>
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ExecStatus
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ASin<A,B>::post(Home home, A x0, B x1) {
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if (x0 == x1) {
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GECODE_ME_CHECK(x0.eq(home,0.0));
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} else {
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GECODE_ME_CHECK(x0.gq(home,-1.0));
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GECODE_ME_CHECK(x0.lq(home,1.0));
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GECODE_ME_CHECK(x1.eq(home,asin(x0.domain())));
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GECODE_ME_CHECK(x0.eq(home,sin(x1.domain())));
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(void) new (home) ASin<A,B>(home,x0,x1);
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}
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return ES_OK;
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}
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template<class A, class B>
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forceinline
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ASin<A,B>::ASin(Space& home, ASin<A,B>& p)
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: MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>(home,p) {}
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template<class A, class B>
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Actor*
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ASin<A,B>::copy(Space& home) {
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return new (home) ASin<A,B>(home,*this);
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}
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template<class A, class B>
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ExecStatus
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ASin<A,B>::propagate(Space& home, const ModEventDelta&) {
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if ((x0.max() < -1) || (x0.min() > 1)) return ES_FAILED;
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GECODE_ME_CHECK(x1.eq(home,asin(x0.domain())));
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GECODE_ME_CHECK(x0.eq(home,sin(x1.domain())));
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return (x0.assigned() || x1.assigned()) ? home.ES_SUBSUMED(*this) : ES_FIX;
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}
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/*
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* Bounds consistent arc cosinus operator
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*
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*/
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template<class A, class B>
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forceinline
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ACos<A,B>::ACos(Home home, A x0, B x1)
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: MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>(home,x0,x1) {}
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template<class A, class B>
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ExecStatus
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ACos<A,B>::post(Home home, A x0, B x1) {
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if (x0 == x1) {
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GECODE_ME_CHECK(x0.gq(home,0.7390851332151));
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GECODE_ME_CHECK(x0.lq(home,0.7390851332152));
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bool mod;
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do {
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mod = false;
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GECODE_ME_CHECK_MODIFIED(mod,x0.eq(home,acos(x0.val())));
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} while (mod);
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} else {
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GECODE_ME_CHECK(x0.gq(home,-1.0));
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GECODE_ME_CHECK(x0.lq(home,1.0));
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GECODE_ME_CHECK(x1.eq(home,acos(x0.domain())));
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GECODE_ME_CHECK(x0.eq(home,cos(x1.domain())));
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(void) new (home) ACos<A,B>(home,x0,x1);
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}
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return ES_OK;
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}
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template<class A, class B>
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forceinline
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ACos<A,B>::ACos(Space& home, ACos<A,B>& p)
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: MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>(home,p) {}
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template<class A, class B>
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Actor*
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ACos<A,B>::copy(Space& home) {
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return new (home) ACos<A,B>(home,*this);
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}
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template<class A, class B>
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ExecStatus
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ACos<A,B>::propagate(Space& home, const ModEventDelta&) {
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if ((x0.max() < -1) || (x0.min() > 1)) return ES_FAILED;
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GECODE_ME_CHECK(x1.eq(home,acos(x0.domain())));
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GECODE_ME_CHECK(x0.eq(home,cos(x1.domain())));
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return (x0.assigned() || x1.assigned()) ? home.ES_SUBSUMED(*this) : ES_FIX;
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}
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}}}
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// STATISTICS: float-prop
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