OpenMesh
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00001 /*===========================================================================*\ 00002 * * 00003 * OpenMesh * 00004 * Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen * 00005 * www.openmesh.org * 00006 * * 00007 *---------------------------------------------------------------------------* 00008 * This file is part of OpenMesh. * 00009 * * 00010 * OpenMesh is free software: you can redistribute it and/or modify * 00011 * it under the terms of the GNU Lesser General Public License as * 00012 * published by the Free Software Foundation, either version 3 of * 00013 * the License, or (at your option) any later version with the * 00014 * following exceptions: * 00015 * * 00016 * If other files instantiate templates or use macros * 00017 * or inline functions from this file, or you compile this file and * 00018 * link it with other files to produce an executable, this file does * 00019 * not by itself cause the resulting executable to be covered by the * 00020 * GNU Lesser General Public License. This exception does not however * 00021 * invalidate any other reasons why the executable file might be * 00022 * covered by the GNU Lesser General Public License. * 00023 * * 00024 * OpenMesh is distributed in the hope that it will be useful, * 00025 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00026 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00027 * GNU Lesser General Public License for more details. * 00028 * * 00029 * You should have received a copy of the GNU LesserGeneral Public * 00030 * License along with OpenMesh. If not, * 00031 * see <http://www.gnu.org/licenses/>. * 00032 * * 00033 \*===========================================================================*/ 00034 00035 /*===========================================================================*\ 00036 * * 00037 * $Revision: 362 $ * 00038 * $Date: 2011-01-26 10:21:12 +0100 (Mi, 26 Jan 2011) $ * 00039 * * 00040 \*===========================================================================*/ 00041 00046 //============================================================================= 00047 // 00048 // CLASS NumLimitsT 00049 // 00050 //============================================================================= 00051 00052 #ifndef OPENMESH_UTILS_NUMLIMITS_HH 00053 #define OPENMESH_UTILS_NUMLIMITS_HH 00054 00055 00056 //== INCLUDES ================================================================= 00057 00058 #include "Config.hh" 00059 #include <limits.h> 00060 #include <float.h> 00061 00062 00063 //== NAMESPEACES ============================================================== 00064 00065 namespace OpenMesh { // BEGIN_NS_OPENMESH 00066 namespace Utils { // BEGIN_NS_UTILS 00067 00068 00069 //== CLASS DEFINITION ========================================================= 00070 00071 00088 template <typename Scalar> 00089 class NumLimitsT 00090 { 00091 public: 00093 static inline Scalar min() { return 0; } 00095 static inline Scalar max() { return 0; } 00096 00097 static inline bool is_float() { return false; } 00098 static inline bool is_integer() { return !NumLimitsT<Scalar>::is_float(); } 00099 static inline bool is_signed() { return true; } 00100 }; 00101 00102 // is_float 00103 00104 template<> 00105 inline bool NumLimitsT<float>::is_float() { return true; } 00106 00107 template<> 00108 inline bool NumLimitsT<double>::is_float() { return true; } 00109 00110 template<> 00111 inline bool NumLimitsT<long double>::is_float() { return true; } 00112 00113 // is_signed 00114 00115 template<> 00116 inline bool NumLimitsT<unsigned char>::is_signed() { return false; } 00117 00118 template<> 00119 inline bool NumLimitsT<unsigned short>::is_signed() { return false; } 00120 00121 template<> 00122 inline bool NumLimitsT<unsigned int>::is_signed() { return false; } 00123 00124 template<> 00125 inline bool NumLimitsT<unsigned long>::is_signed() { return false; } 00126 00127 template<> 00128 inline bool NumLimitsT<unsigned long long>::is_signed() { return false; } 00129 00130 // min/max 00131 template<> inline int NumLimitsT<int>::min() { return INT_MIN; } 00132 template<> inline int NumLimitsT<int>::max() { return INT_MAX; } 00133 00134 template<> inline float NumLimitsT<float>::min() { return FLT_MIN; } 00135 template<> inline float NumLimitsT<float>::max() { return FLT_MAX; } 00136 00137 template<> inline double NumLimitsT<double>::min() { return DBL_MIN; } 00138 template<> inline double NumLimitsT<double>::max() { return DBL_MAX; } 00139 00140 00141 //============================================================================= 00142 } // END_NS_UTILS 00143 } // END_NS_OPENMESH 00144 //============================================================================= 00145 #endif // OPENMESH_NUMLIMITS_HH defined 00146 //============================================================================= 00147