Jip J. Dekker
3e72b0e857
git-subtree-dir: software/gecode_on_record git-subtree-split: 37ed9bda495ea87e63217c19a374b5a93bb0078e
92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2003
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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 Int { namespace Count {
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template<class VX, class VY, class VZ, bool shr>
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forceinline
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LqView<VX,VY,VZ,shr>::LqView(Home home, ViewArray<VX>& x,
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VY y, VZ z, int c)
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: ViewBase<VX,VY,VZ>(home,x,y,z,c) {}
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template<class VX, class VY, class VZ, bool shr>
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ExecStatus
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LqView<VX,VY,VZ,shr>::post(Home home, ViewArray<VX>& x,
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VY y, VZ z, int c) {
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GECODE_ME_CHECK(z.gq(home,-c));
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if (z.assigned())
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return LqInt<VX,VY>::post(home,x,y,z.val()+c);
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if (sharing(x,y,z))
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(void) new (home) LqView<VX,VY,VZ,true>(home,x,y,z,c);
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else
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(void) new (home) LqView<VX,VY,VZ,false>(home,x,y,z,c);
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return ES_OK;
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}
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template<class VX, class VY, class VZ, bool shr>
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forceinline
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LqView<VX,VY,VZ,shr>::LqView(Space& home, LqView<VX,VY,VZ,shr>& p)
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: ViewBase<VX,VY,VZ>(home,p) {}
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template<class VX, class VY, class VZ, bool shr>
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Actor*
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LqView<VX,VY,VZ,shr>::copy(Space& home) {
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return new (home) LqView<VX,VY,VZ,shr>(home,*this);
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}
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template<class VX, class VY, class VZ, bool shr>
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ExecStatus
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LqView<VX,VY,VZ,shr>::propagate(Space& home, const ModEventDelta&) {
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count(home);
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GECODE_ME_CHECK(z.gq(home,atleast()));
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if (z.max() == atleast()) {
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GECODE_ES_CHECK(post_false(home,x,y));
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return home.ES_SUBSUMED(*this);
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}
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if (x.size() == 0)
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return home.ES_SUBSUMED(*this);
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if (z.assigned()) {
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VY yc(y);
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GECODE_REWRITE(*this,(LqInt<VX,VY>::post(home(*this),x,yc,z.val()+c)));
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}
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return shr ? ES_NOFIX : ES_FIX;
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}
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}}}
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// STATISTICS: int-prop
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