Jip J. Dekker
981be2067e
git-subtree-dir: software/gecode_on_replay git-subtree-split: 8051d92b9c89e49cccfbd1c201371580d7703ab4
102 lines
3.8 KiB
C++
102 lines
3.8 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, 2009
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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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#include <gecode/int/rel.hh>
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namespace Gecode { namespace Int { namespace Element {
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forceinline
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Pair::Pair(Home home, IntView x0, IntView x1, IntView x2, int w0)
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: TernaryPropagator<IntView,PC_INT_DOM>(home,x0,x1,x2), w(w0) {}
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inline ExecStatus
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Pair::post(Home home, IntView x0, IntView x1, IntView x2,
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int w, int h) {
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GECODE_ME_CHECK(x0.gq(home,0)); GECODE_ME_CHECK(x0.le(home,w));
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GECODE_ME_CHECK(x1.gq(home,0)); GECODE_ME_CHECK(x1.le(home,h));
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GECODE_ME_CHECK(x2.gq(home,0)); GECODE_ME_CHECK(x2.le(home,w*h));
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if (x0.assigned() && x1.assigned()) {
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GECODE_ME_CHECK(x2.eq(home,x0.val()+w*x1.val()));
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} else if (x1.assigned()) {
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OffsetView x0x1w(x0,x1.val()*w);
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return Rel::EqDom<OffsetView,IntView>::post(home,x0x1w,x2);
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} else if (x2.assigned()) {
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GECODE_ME_CHECK(x0.eq(home,x2.val() % w));
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GECODE_ME_CHECK(x1.eq(home,static_cast<int>(x2.val() / w)));
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} else {
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assert(!shared(x0,x2) && !shared(x1,x2));
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(void) new (home) Pair(home,x0,x1,x2,w);
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}
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return ES_OK;
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}
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forceinline
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Pair::Pair(Space& home, Pair& p)
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: TernaryPropagator<IntView,PC_INT_DOM>(home,p), w(p.w) {}
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forceinline
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PairWithOffsets::PairWithOffsets(Home home, OffsetView x0, OffsetView x1,
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IntView x2, int w0)
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: TernaryPropagator<OffsetView,PC_INT_DOM>(home,x0,x1,OffsetView(x2,0)),
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w(w0) {}
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inline ExecStatus
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PairWithOffsets::post(Home home, OffsetView x0, OffsetView x1, IntView x2,
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int w, int h) {
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GECODE_ME_CHECK(x0.gq(home,0)); GECODE_ME_CHECK(x0.le(home,w));
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GECODE_ME_CHECK(x1.gq(home,0)); GECODE_ME_CHECK(x1.le(home,h));
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GECODE_ME_CHECK(x2.gq(home,0)); GECODE_ME_CHECK(x2.le(home,w*h));
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if (x0.assigned() && x1.assigned()) {
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GECODE_ME_CHECK(x2.eq(home,x0.val()+w*x1.val()));
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} else if (x1.assigned()) {
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OffsetView x0x1w(x0.base(),x0.offset()+x1.val()*w);
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return Rel::EqDom<OffsetView,IntView>::post(home,x0x1w,x2);
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} else if (x2.assigned()) {
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GECODE_ME_CHECK(x0.eq(home,x2.val() % w));
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GECODE_ME_CHECK(x1.eq(home,static_cast<int>(x2.val() / w)));
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} else {
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assert(!shared(x0,x2) && !shared(x1,x2));
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(void) new (home) PairWithOffsets(home,x0,x1,x2,w);
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}
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return ES_OK;
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}
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forceinline
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PairWithOffsets::PairWithOffsets(Space& home, PairWithOffsets& p)
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: TernaryPropagator<OffsetView,PC_INT_DOM>(home,p), w(p.w) {}
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}}}
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// STATISTICS: int-prop
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