irt.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, 2017 00008 * 00009 * Last modified: 00010 * $Date: 2017-03-09 09:51:58 +0100 (Thu, 09 Mar 2017) $ by $Author: schulte $ 00011 * $Revision: 15565 $ 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 { 00039 00040 forceinline IntRelType 00041 swap(IntRelType irt) { 00042 switch (irt) { 00043 case IRT_EQ: return IRT_EQ; 00044 case IRT_NQ: return IRT_NQ; 00045 case IRT_LE: return IRT_GR; 00046 case IRT_LQ: return IRT_GQ; 00047 case IRT_GR: return IRT_LE; 00048 case IRT_GQ: return IRT_LQ; 00049 default: GECODE_NEVER; 00050 } 00051 GECODE_NEVER; 00052 return IRT_EQ; // Avoid compiler warnings 00053 } 00054 00055 forceinline IntRelType 00056 neg(IntRelType irt) { 00057 switch (irt) { 00058 case IRT_EQ: return IRT_NQ; 00059 case IRT_NQ: return IRT_EQ; 00060 case IRT_GQ: return IRT_LE; 00061 case IRT_LQ: return IRT_GR; 00062 case IRT_LE: return IRT_GQ; 00063 case IRT_GR: return IRT_LQ; 00064 default: GECODE_NEVER; 00065 } 00066 GECODE_NEVER; 00067 return IRT_EQ; // Avoid compiler warnings 00068 } 00069 00070 00071 } 00072 00073 // STATISTICS: int-post 00074