1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: templates.hh,v 1.13 2008/08/15 12:15:53 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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29 | // |
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30 | // |
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31 | // -*- C++ -*- |
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32 | // |
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33 | // ----------------------------------------------------------------------- |
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34 | // This file should define some platform dependent features and some |
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35 | // useful utilities. |
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36 | // ----------------------------------------------------------------------- |
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37 | |
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38 | // ======================================================================= |
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39 | // Gabriele Cosmo - Created: 5th September 1995 |
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40 | // Gabriele Cosmo - Minor change: 08/02/1996 |
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41 | // Gabriele Cosmo - Added DBL_MIN, FLT_MIN, DBL_DIG, |
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42 | // DBL_MAX, FLT_DIG, FLT_MAX : 12/04/1996 |
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43 | // Gabriele Cosmo - Removed boolean enum definition : 29/11/1996 |
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44 | // Gunter Folger - Added G4SwapPtr() and G4SwapObj() : 31/07/1997 |
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45 | // Gabriele Cosmo - Adapted signatures of min(), max() to |
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46 | // STL's ones, thanks to E.Tcherniaev : 31/07/1997 |
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47 | // Gabriele Cosmo, |
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48 | // Evgueni Tcherniaev - Migrated to CLHEP: 04/12/1997 |
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49 | // ======================================================================= |
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50 | |
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51 | #ifndef templates_h |
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52 | #define templates_h 1 |
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53 | |
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54 | #include <limits> |
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55 | #include <climits> |
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56 | |
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57 | // |
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58 | // If HIGH_PRECISION is defined to TRUE (ie. != 0) then the type "Float" |
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59 | // is typedefed to "double". If it is FALSE (ie. 0) it is typedefed |
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60 | // to "float". |
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61 | // |
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62 | #ifndef HIGH_PRECISION |
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63 | #define HIGH_PRECISION 1 |
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64 | #endif |
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65 | |
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66 | #if HIGH_PRECISION |
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67 | typedef double Float; |
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68 | #else |
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69 | typedef float Float; |
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70 | #endif |
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71 | |
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72 | // Following values have been taken from limits.h |
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73 | // and temporarly defined for portability on HP-UX. |
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74 | |
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75 | #ifndef DBL_MIN /* Min decimal value of a double */ |
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76 | #define DBL_MIN std::numeric_limits<double>::min() // 2.2250738585072014e-308 |
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77 | #endif |
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78 | |
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79 | #ifndef DBL_DIG /* Digits of precision of a double */ |
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80 | #define DBL_DIG std::numeric_limits<double>::digits10 // 15 |
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81 | #endif |
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82 | |
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83 | #ifndef DBL_MAX /* Max decimal value of a double */ |
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84 | #define DBL_MAX std::numeric_limits<double>::max() // 1.7976931348623157e+308 |
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85 | #endif |
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86 | |
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87 | #ifndef DBL_EPSILON |
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88 | #define DBL_EPSILON std::numeric_limits<double>::epsilon() |
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89 | #endif // 2.2204460492503131e-16 |
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90 | |
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91 | #ifndef FLT_MIN /* Min decimal value of a float */ |
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92 | #define FLT_MIN std::numeric_limits<float>::min() // 1.17549435e-38F |
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93 | #endif |
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94 | |
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95 | #ifndef FLT_DIG /* Digits of precision of a float */ |
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96 | #define FLT_DIG std::numeric_limits<float>::digits10 // 6 |
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97 | #endif |
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98 | |
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99 | #ifndef FLT_MAX /* Max decimal value of a float */ |
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100 | #define FLT_MAX std::numeric_limits<float>::max() // 3.40282347e+38F |
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101 | #endif |
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102 | |
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103 | #ifndef FLT_EPSILON |
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104 | #define FLT_EPSILON std::numeric_limits<float>::epsilon() |
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105 | #endif // 1.192092896e-07F |
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106 | |
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107 | #ifndef MAXFLOAT /* Max decimal value of a float */ |
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108 | #define MAXFLOAT std::numeric_limits<float>::max() // 3.40282347e+38F |
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109 | #endif |
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110 | |
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111 | //--------------------------------- |
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112 | |
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113 | template <class T> |
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114 | inline void G4SwapPtr(T*& a, T*& b) { |
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115 | T* tmp= a; |
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116 | a = b; |
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117 | b = tmp; |
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118 | } |
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119 | |
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120 | template <class T> |
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121 | inline void G4SwapObj(T* a, T* b) { |
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122 | T tmp= *a; |
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123 | *a = *b; |
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124 | *b = tmp; |
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125 | } |
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126 | |
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127 | //----------------------------- |
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128 | |
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129 | #ifndef G4_SQR_DEFINED |
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130 | #define G4_SQR_DEFINED |
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131 | #ifdef sqr |
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132 | #undef sqr |
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133 | #endif |
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134 | |
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135 | template <class T> |
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136 | inline T sqr(const T& x) |
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137 | { |
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138 | return x*x; |
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139 | } |
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140 | #endif |
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141 | |
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142 | #ifdef G4_ABS_DEFINED |
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143 | #ifdef abs |
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144 | #undef abs |
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145 | #endif |
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146 | template <class T> |
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147 | inline T std::abs(const T& a) |
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148 | { |
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149 | return a < 0 ? -a : a; |
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150 | } |
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151 | #endif |
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152 | |
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153 | #endif // templates_h |
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