edge-finding.hpp
Go to the documentation of this file.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, 2009 00008 * 00009 * Last modified: 00010 * $Date: 2011-05-25 16:56:41 +0200 (Wed, 25 May 2011) $ by $Author: schulte $ 00011 * $Revision: 12022 $ 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 #include <algorithm> 00039 00040 namespace Gecode { namespace Int { namespace Unary { 00041 00042 template<class TaskView> 00043 forceinline ExecStatus 00044 edgefinding(Space& home, TaskViewArray<TaskView>& t) { 00045 Region r(home); 00046 00047 OmegaLambdaTree<TaskView> ol(r,t); 00048 TaskViewIter<TaskView,STO_LCT,false> q(r,t); 00049 00050 int j = q.task(); 00051 while (q.left() > 1) { 00052 if (ol.ect() > t[j].lct()) 00053 return ES_FAILED; 00054 ol.shift(j); 00055 ++q; 00056 j = q.task(); 00057 while (!ol.lempty() && (ol.lect() > t[j].lct())) { 00058 int i = ol.responsible(); 00059 GECODE_ME_CHECK(t[i].est(home,ol.ect())); 00060 ol.lremove(i); 00061 } 00062 } 00063 00064 return ES_OK; 00065 } 00066 00067 template<class Task> 00068 ExecStatus 00069 edgefinding(Space& home, TaskArray<Task>& t) { 00070 TaskViewArray<typename TaskTraits<Task>::TaskViewFwd> f(t); 00071 GECODE_ES_CHECK(edgefinding(home,f)); 00072 TaskViewArray<typename TaskTraits<Task>::TaskViewBwd> b(t); 00073 return edgefinding(home,b); 00074 } 00075 00076 }}} 00077 00078 // STATISTICS: int-prop