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14 | pmbaty | 1 | /*===---- float.h - Characteristics of floating point types ----------------=== |
2 | * |
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3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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4 | * See https://llvm.org/LICENSE.txt for license information. |
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5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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6 | * |
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7 | *===-----------------------------------------------------------------------=== |
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8 | */ |
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9 | |||
10 | #ifndef __CLANG_FLOAT_H |
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11 | #define __CLANG_FLOAT_H |
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12 | |||
13 | /* If we're on MinGW, fall back to the system's float.h, which might have |
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14 | * additional definitions provided for Windows. |
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15 | * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx |
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16 | * |
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17 | * Also fall back on Darwin and AIX to allow additional definitions and |
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18 | * implementation-defined values. |
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19 | */ |
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20 | #if (defined(__APPLE__) || defined(__MINGW32__) || defined(_MSC_VER) || \ |
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21 | defined(_AIX)) && \ |
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22 | __STDC_HOSTED__ && __has_include_next(<float.h>) |
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23 | |||
24 | /* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level |
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25 | * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this |
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26 | * extra indirection. |
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27 | */ |
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28 | #ifdef __APPLE__ |
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29 | #define _FLOAT_H_ |
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30 | #endif |
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31 | |||
32 | # include_next <float.h> |
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33 | |||
34 | /* Undefine anything that we'll be redefining below. */ |
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35 | # undef FLT_EVAL_METHOD |
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36 | # undef FLT_ROUNDS |
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37 | # undef FLT_RADIX |
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38 | # undef FLT_MANT_DIG |
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39 | # undef DBL_MANT_DIG |
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40 | # undef LDBL_MANT_DIG |
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41 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ |
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42 | !defined(__STRICT_ANSI__) || \ |
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43 | (defined(__cplusplus) && __cplusplus >= 201103L) || \ |
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44 | (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) |
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45 | # undef DECIMAL_DIG |
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46 | # endif |
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47 | # undef FLT_DIG |
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48 | # undef DBL_DIG |
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49 | # undef LDBL_DIG |
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50 | # undef FLT_MIN_EXP |
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51 | # undef DBL_MIN_EXP |
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52 | # undef LDBL_MIN_EXP |
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53 | # undef FLT_MIN_10_EXP |
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54 | # undef DBL_MIN_10_EXP |
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55 | # undef LDBL_MIN_10_EXP |
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56 | # undef FLT_MAX_EXP |
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57 | # undef DBL_MAX_EXP |
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58 | # undef LDBL_MAX_EXP |
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59 | # undef FLT_MAX_10_EXP |
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60 | # undef DBL_MAX_10_EXP |
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61 | # undef LDBL_MAX_10_EXP |
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62 | # undef FLT_MAX |
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63 | # undef DBL_MAX |
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64 | # undef LDBL_MAX |
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65 | # undef FLT_EPSILON |
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66 | # undef DBL_EPSILON |
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67 | # undef LDBL_EPSILON |
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68 | # undef FLT_MIN |
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69 | # undef DBL_MIN |
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70 | # undef LDBL_MIN |
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71 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \ |
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72 | !defined(__STRICT_ANSI__) || \ |
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73 | (defined(__cplusplus) && __cplusplus >= 201703L) || \ |
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74 | (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) |
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75 | # undef FLT_TRUE_MIN |
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76 | # undef DBL_TRUE_MIN |
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77 | # undef LDBL_TRUE_MIN |
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78 | # undef FLT_DECIMAL_DIG |
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79 | # undef DBL_DECIMAL_DIG |
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80 | # undef LDBL_DECIMAL_DIG |
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81 | # undef FLT_HAS_SUBNORM |
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82 | # undef DBL_HAS_SUBNORM |
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83 | # undef LDBL_HAS_SUBNORM |
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84 | # endif |
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85 | #endif |
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86 | |||
87 | /* Characteristics of floating point types, C99 5.2.4.2.2 */ |
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88 | |||
89 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ |
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90 | (defined(__cplusplus) && __cplusplus >= 201103L) |
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91 | #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
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92 | #endif |
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93 | #define FLT_ROUNDS (__builtin_flt_rounds()) |
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94 | #define FLT_RADIX __FLT_RADIX__ |
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95 | |||
96 | #define FLT_MANT_DIG __FLT_MANT_DIG__ |
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97 | #define DBL_MANT_DIG __DBL_MANT_DIG__ |
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98 | #define LDBL_MANT_DIG __LDBL_MANT_DIG__ |
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99 | |||
100 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ |
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101 | !defined(__STRICT_ANSI__) || \ |
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102 | (defined(__cplusplus) && __cplusplus >= 201103L) || \ |
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103 | (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) |
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104 | # define DECIMAL_DIG __DECIMAL_DIG__ |
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105 | #endif |
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106 | |||
107 | #define FLT_DIG __FLT_DIG__ |
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108 | #define DBL_DIG __DBL_DIG__ |
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109 | #define LDBL_DIG __LDBL_DIG__ |
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110 | |||
111 | #define FLT_MIN_EXP __FLT_MIN_EXP__ |
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112 | #define DBL_MIN_EXP __DBL_MIN_EXP__ |
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113 | #define LDBL_MIN_EXP __LDBL_MIN_EXP__ |
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114 | |||
115 | #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ |
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116 | #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ |
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117 | #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ |
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118 | |||
119 | #define FLT_MAX_EXP __FLT_MAX_EXP__ |
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120 | #define DBL_MAX_EXP __DBL_MAX_EXP__ |
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121 | #define LDBL_MAX_EXP __LDBL_MAX_EXP__ |
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122 | |||
123 | #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ |
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124 | #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ |
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125 | #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ |
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126 | |||
127 | #define FLT_MAX __FLT_MAX__ |
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128 | #define DBL_MAX __DBL_MAX__ |
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129 | #define LDBL_MAX __LDBL_MAX__ |
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130 | |||
131 | #define FLT_EPSILON __FLT_EPSILON__ |
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132 | #define DBL_EPSILON __DBL_EPSILON__ |
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133 | #define LDBL_EPSILON __LDBL_EPSILON__ |
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134 | |||
135 | #define FLT_MIN __FLT_MIN__ |
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136 | #define DBL_MIN __DBL_MIN__ |
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137 | #define LDBL_MIN __LDBL_MIN__ |
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138 | |||
139 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \ |
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140 | !defined(__STRICT_ANSI__) || \ |
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141 | (defined(__cplusplus) && __cplusplus >= 201703L) || \ |
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142 | (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) |
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143 | # define FLT_TRUE_MIN __FLT_DENORM_MIN__ |
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144 | # define DBL_TRUE_MIN __DBL_DENORM_MIN__ |
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145 | # define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ |
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146 | # define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ |
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147 | # define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ |
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148 | # define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ |
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149 | # define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ |
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150 | # define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ |
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151 | # define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ |
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152 | #endif |
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153 | |||
154 | #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
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155 | # define FLT16_MANT_DIG __FLT16_MANT_DIG__ |
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156 | # define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ |
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157 | # define FLT16_DIG __FLT16_DIG__ |
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158 | # define FLT16_MIN_EXP __FLT16_MIN_EXP__ |
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159 | # define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ |
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160 | # define FLT16_MAX_EXP __FLT16_MAX_EXP__ |
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161 | # define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ |
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162 | # define FLT16_MAX __FLT16_MAX__ |
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163 | # define FLT16_EPSILON __FLT16_EPSILON__ |
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164 | # define FLT16_MIN __FLT16_MIN__ |
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165 | # define FLT16_TRUE_MIN __FLT16_TRUE_MIN__ |
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166 | #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */ |
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167 | |||
168 | #endif /* __CLANG_FLOAT_H */ |