rounding.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, 2012 00008 * 00009 * Last modified: 00010 * $Date: 2013-02-13 09:12:37 +0100 (Wed, 13 Feb 2013) $ by $Author: vbarichard $ 00011 * $Revision: 13285 $ 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 Float { 00039 00040 forceinline 00041 Rounding::Rounding(void) { Base::init(); } 00042 forceinline 00043 Rounding::~Rounding(void) {} 00044 00045 forceinline FloatNum 00046 Rounding::median(FloatNum x, FloatNum y) { 00047 return Base::median(x,y); 00048 } 00049 00050 #define GECODE_ROUND_OP(name) \ 00051 forceinline FloatNum \ 00052 Rounding::name##_down(FloatNum x, FloatNum y) { \ 00053 return Base::name##_down(x,y); \ 00054 } \ 00055 forceinline FloatNum \ 00056 Rounding::name##_up(FloatNum x, FloatNum y) { \ 00057 return Base::name##_up(x,y); \ 00058 } 00059 00060 GECODE_ROUND_OP(add) 00061 GECODE_ROUND_OP(sub) 00062 GECODE_ROUND_OP(mul) 00063 GECODE_ROUND_OP(div) 00064 00065 #undef GECODE_ROUND_OP 00066 00067 #define GECODE_ROUND_FUN(name) \ 00068 forceinline FloatNum \ 00069 Rounding::name##_down(FloatNum x) { \ 00070 return Base::name##_down(x); \ 00071 } \ 00072 forceinline FloatNum \ 00073 Rounding::name##_up(FloatNum x) { \ 00074 return Base::name##_up(x); \ 00075 } 00076 00077 GECODE_ROUND_FUN(sqrt) 00078 00079 #if defined(_M_X64) || defined(_M_IA64) 00080 00081 // Workaround as MSVC on x64 does not have a rint function 00082 forceinline FloatNum 00083 Rounding::int_down(FloatNum x) { 00084 return floor(x); 00085 } 00086 forceinline FloatNum 00087 Rounding::int_up(FloatNum x) { 00088 return ceil(x); 00089 } 00090 00091 #else 00092 00093 GECODE_ROUND_FUN(int) 00094 00095 #endif 00096 00097 #undef GECODE_ROUND_FUN 00098 00099 }} 00100 00101 // STATISTICS: float-var 00102