ngl.cpp
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, 2013 00008 * 00009 * This file is part of Gecode, the generic constraint 00010 * development environment: 00011 * http://www.gecode.org 00012 * 00013 * Permission is hereby granted, free of charge, to any person obtaining 00014 * a copy of this software and associated documentation files (the 00015 * "Software"), to deal in the Software without restriction, including 00016 * without limitation the rights to use, copy, modify, merge, publish, 00017 * distribute, sublicense, and/or sell copies of the Software, and to 00018 * permit persons to whom the Software is furnished to do so, subject to 00019 * the following conditions: 00020 * 00021 * The above copyright notice and this permission notice shall be 00022 * included in all copies or substantial portions of the Software. 00023 * 00024 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00025 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00026 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00027 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00028 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00029 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00030 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00031 * 00032 */ 00033 00034 #include <gecode/set/branch.hh> 00035 00036 namespace Gecode { namespace Set { namespace Branch { 00037 00038 NGL* 00039 IncNGL::copy(Space& home) { 00040 return new (home) IncNGL(home,*this); 00041 } 00042 NGL::Status 00043 IncNGL::status(const Space&) const { 00044 // Is n in the glb(x)? 00045 if (x.contains(n)) 00046 return NGL::SUBSUMED; 00047 else 00048 // Is n not in the lub(x)? 00049 return x.notContains(n) ? NGL::FAILED : NGL::NONE; 00050 } 00051 ExecStatus 00052 IncNGL::prune(Space& home) { 00053 return me_failed(x.exclude(home,n)) ? ES_FAILED : ES_OK; 00054 } 00055 00056 00057 NGL* 00058 ExcNGL::copy(Space& home) { 00059 return new (home) ExcNGL(home,*this); 00060 } 00061 NGL::Status 00062 ExcNGL::status(const Space&) const { 00063 // Is n not in the lub(x)? 00064 if (x.notContains(n)) 00065 return NGL::SUBSUMED; 00066 else 00067 // Is n in the lub(x)? 00068 return x.contains(n) ? NGL::FAILED : NGL::NONE; 00069 } 00070 ExecStatus 00071 ExcNGL::prune(Space& home) { 00072 return me_failed(x.include(home,n)) ? ES_FAILED : ES_OK; 00073 } 00074 00075 }}} 00076 00077 // STATISTICS: set-branch