ter-dom.hpp
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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2003 00008 * 00009 * Last modified: 00010 * $Date: 2010-03-03 17:32:21 +0100 (Wed, 03 Mar 2010) $ by $Author: schulte $ 00011 * $Revision: 10364 $ 00012 * 00013 * This file is part of Gecode, the generic constraint 00014 * development environment: 00015 * http://www.gecode.org 00016 * 00017 * Permission is hereby granted, free of charge, to any person obtaining 00018 * a copy of this software and associated documentation files (the 00019 * "Software"), to deal in the Software without restriction, including 00020 * without limitation the rights to use, copy, modify, merge, publish, 00021 * distribute, sublicense, and/or sell copies of the Software, and to 00022 * permit persons to whom the Software is furnished to do so, subject to 00023 * the following conditions: 00024 * 00025 * The above copyright notice and this permission notice shall be 00026 * included in all copies or substantial portions of the Software. 00027 * 00028 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00029 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00030 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00031 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00032 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00033 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00034 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00035 * 00036 */ 00037 00038 namespace Gecode { namespace Int { namespace Distinct { 00039 00040 00041 /* 00042 * Ternary domain consistent distinct 00043 * 00044 */ 00045 00046 template<class View> 00047 forceinline 00048 TerDom<View>::TerDom(Home home, View x0, View x1, View x2) 00049 : TernaryPropagator<View,PC_INT_DOM>(home,x0,x1,x2) {} 00050 00051 template<class View> 00052 ExecStatus 00053 TerDom<View>::post(Home home, View x0, View x1, View x2) { 00054 (void) new (home) TerDom<View>(home,x0,x1,x2); 00055 return ES_OK; 00056 } 00057 00058 template<class View> 00059 forceinline 00060 TerDom<View>::TerDom(Space& home, bool share, TerDom<View>& p) 00061 : TernaryPropagator<View,PC_INT_DOM>(home,share,p) {} 00062 00063 template<class View> 00064 Actor* 00065 TerDom<View>::copy(Space& home, bool share) { 00066 return new (home) TerDom<View>(home,share,*this); 00067 } 00068 00070 #define GECODE_INT_HALL_ONE(x0,x1,x2) \ 00071 if (x0.assigned()) { \ 00072 GECODE_ME_CHECK(x1.nq(home,x0.val())); \ 00073 GECODE_ME_CHECK(x2.nq(home,x0.val())); \ 00074 if (x1.assigned()) { \ 00075 GECODE_ME_CHECK(x2.nq(home,x1.val())); \ 00076 return home.ES_SUBSUMED(*this); \ 00077 } \ 00078 if (x2.assigned()) { \ 00079 GECODE_ME_CHECK(x1.nq(home,x2.val())); \ 00080 return home.ES_SUBSUMED(*this); \ 00081 } \ 00082 return ES_FIX; \ 00083 } 00084 00085 00087 #define GECODE_INT_HALL_TWO(x0,x1,x2) \ 00088 if ((x0.size() == 2) && (x1.size() == 2) && \ 00089 (x0.min() == x1.min()) && (x0.max() == x1.max())) { \ 00090 GECODE_ME_CHECK(x2.nq(home,x0.min())); \ 00091 GECODE_ME_CHECK(x2.nq(home,x0.max())); \ 00092 return ES_FIX; \ 00093 } 00094 00095 template<class View> 00096 ExecStatus 00097 TerDom<View>::propagate(Space& home, const ModEventDelta&) { 00098 GECODE_INT_HALL_ONE(x0,x1,x2); 00099 GECODE_INT_HALL_ONE(x1,x0,x2); 00100 GECODE_INT_HALL_ONE(x2,x0,x1); 00101 GECODE_INT_HALL_TWO(x0,x1,x2); 00102 GECODE_INT_HALL_TWO(x0,x2,x1); 00103 GECODE_INT_HALL_TWO(x1,x2,x0); 00104 return ES_FIX; 00105 } 00106 00107 #undef GECODE_INT_HALL_ONE 00108 #undef GECODE_INT_HALL_TWO 00109 00110 }}} 00111 00112 // STATISTICS: int-prop 00113