precede.cpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christopher Mears <Chris.Mears@monash.edu> 00005 * 00006 * Contributing authors: 00007 * Christian Schulte <schulte@gecode.org> 00008 * 00009 * Copyright: 00010 * Christopher Mears, 2011 00011 * Christian Schulte, 2011 00012 * 00013 * Last modified: 00014 * $Date: 2011-06-30 16:20:54 +0200 (Thu, 30 Jun 2011) $ by $Author: schulte $ 00015 * $Revision: 12138 $ 00016 * 00017 * This file is part of Gecode, the generic constraint 00018 * development environment: 00019 * http://www.gecode.org 00020 * 00021 * Permission is hereby granted, free of charge, to any person obtaining 00022 * a copy of this software and associated documentation files (the 00023 * "Software"), to deal in the Software without restriction, including 00024 * without limitation the rights to use, copy, modify, merge, publish, 00025 * distribute, sublicense, and/or sell copies of the Software, and to 00026 * permit persons to whom the Software is furnished to do so, subject to 00027 * the following conditions: 00028 * 00029 * The above copyright notice and this permission notice shall be 00030 * included in all copies or substantial portions of the Software. 00031 * 00032 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00033 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00034 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00035 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00036 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00037 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00038 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00039 * 00040 */ 00041 00042 #include <gecode/int/precede.hh> 00043 00044 namespace Gecode { 00045 00046 void 00047 precede(Home home, const IntVarArgs& x, int s, int t, IntConLevel) { 00048 using namespace Int; 00049 Limits::check(s,"Int::precede"); 00050 Limits::check(t,"Int::precede"); 00051 if (home.failed()) return; 00052 00053 ViewArray<IntView> y(home, x); 00054 GECODE_ES_FAIL(Precede::Single<IntView>::post(home, y, s, t)); 00055 } 00056 00057 void 00058 precede(Home home, const IntVarArgs& x, const IntArgs& c, IntConLevel) { 00059 using namespace Int; 00060 for (int i=c.size(); i--; ) 00061 Limits::check(c[i],"Int::precede"); 00062 if (home.failed()) return; 00063 00064 for (int i=c.size()-1; i--; ) { 00065 ViewArray<IntView> y(home, x); 00066 GECODE_ES_FAIL(Precede::Single<IntView>::post(home, y, c[i], c[i+1])); 00067 } 00068 } 00069 00070 } 00071 00072 // STATISTICS: int-post 00073