Jip J. Dekker
981be2067e
git-subtree-dir: software/gecode_on_replay git-subtree-split: 8051d92b9c89e49cccfbd1c201371580d7703ab4
110 lines
3.6 KiB
C++
110 lines
3.6 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 Distinct {
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/*
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* Ternary domain consistent distinct
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*
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*/
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template<class View>
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forceinline
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TerDom<View>::TerDom(Home home, View x0, View x1, View x2)
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: TernaryPropagator<View,PC_INT_DOM>(home,x0,x1,x2) {}
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template<class View>
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ExecStatus
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TerDom<View>::post(Home home, View x0, View x1, View x2) {
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(void) new (home) TerDom<View>(home,x0,x1,x2);
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return ES_OK;
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}
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template<class View>
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forceinline
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TerDom<View>::TerDom(Space& home, TerDom<View>& p)
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: TernaryPropagator<View,PC_INT_DOM>(home,p) {}
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template<class View>
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Actor*
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TerDom<View>::copy(Space& home) {
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return new (home) TerDom<View>(home,*this);
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}
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/// Check whether x0 forms a Hall set of cardinality one
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#define GECODE_INT_HALL_ONE(x0,x1,x2) \
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if (x0.assigned()) { \
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GECODE_ME_CHECK(x1.nq(home,x0.val())); \
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GECODE_ME_CHECK(x2.nq(home,x0.val())); \
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if (x1.assigned()) { \
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GECODE_ME_CHECK(x2.nq(home,x1.val())); \
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return home.ES_SUBSUMED(*this); \
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} \
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if (x2.assigned()) { \
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GECODE_ME_CHECK(x1.nq(home,x2.val())); \
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return home.ES_SUBSUMED(*this); \
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} \
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return ES_FIX; \
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}
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/// Check whether x0 and x1 form a Hall set of cardinality two
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#define GECODE_INT_HALL_TWO(x0,x1,x2) \
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if ((x0.size() == 2) && (x1.size() == 2) && \
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(x0.min() == x1.min()) && (x0.max() == x1.max())) { \
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GECODE_ME_CHECK(x2.nq(home,x0.min())); \
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GECODE_ME_CHECK(x2.nq(home,x0.max())); \
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return ES_FIX; \
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}
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template<class View>
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ExecStatus
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TerDom<View>::propagate(Space& home, const ModEventDelta&) {
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GECODE_INT_HALL_ONE(x0,x1,x2);
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GECODE_INT_HALL_ONE(x1,x0,x2);
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GECODE_INT_HALL_ONE(x2,x0,x1);
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GECODE_INT_HALL_TWO(x0,x1,x2);
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GECODE_INT_HALL_TWO(x0,x2,x1);
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GECODE_INT_HALL_TWO(x1,x2,x0);
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return ES_FIX;
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}
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#undef GECODE_INT_HALL_ONE
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#undef GECODE_INT_HALL_TWO
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}}}
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// STATISTICS: int-prop
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