Mercurial > hg > CbC > CbC_gcc
annotate gcc/ginclude/float.h @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
| 131 | 1 /* Copyright (C) 2002-2018 Free Software Foundation, Inc. |
| 0 | 2 |
| 3 This file is part of GCC. | |
| 4 | |
| 5 GCC is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 3, or (at your option) | |
| 8 any later version. | |
| 9 | |
| 10 GCC is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 Under Section 7 of GPL version 3, you are granted additional | |
| 16 permissions described in the GCC Runtime Library Exception, version | |
| 17 3.1, as published by the Free Software Foundation. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License and | |
| 20 a copy of the GCC Runtime Library Exception along with this program; | |
| 21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 22 <http://www.gnu.org/licenses/>. */ | |
| 23 | |
| 24 /* | |
| 25 * ISO C Standard: 5.2.4.2.2 Characteristics of floating types <float.h> | |
| 26 */ | |
| 27 | |
| 28 #ifndef _FLOAT_H___ | |
| 29 #define _FLOAT_H___ | |
| 30 | |
| 31 /* Radix of exponent representation, b. */ | |
| 32 #undef FLT_RADIX | |
| 33 #define FLT_RADIX __FLT_RADIX__ | |
| 34 | |
| 35 /* Number of base-FLT_RADIX digits in the significand, p. */ | |
| 36 #undef FLT_MANT_DIG | |
| 37 #undef DBL_MANT_DIG | |
| 38 #undef LDBL_MANT_DIG | |
| 39 #define FLT_MANT_DIG __FLT_MANT_DIG__ | |
| 40 #define DBL_MANT_DIG __DBL_MANT_DIG__ | |
| 41 #define LDBL_MANT_DIG __LDBL_MANT_DIG__ | |
| 42 | |
| 43 /* Number of decimal digits, q, such that any floating-point number with q | |
| 44 decimal digits can be rounded into a floating-point number with p radix b | |
| 45 digits and back again without change to the q decimal digits, | |
| 46 | |
| 47 p * log10(b) if b is a power of 10 | |
| 48 floor((p - 1) * log10(b)) otherwise | |
| 49 */ | |
| 50 #undef FLT_DIG | |
| 51 #undef DBL_DIG | |
| 52 #undef LDBL_DIG | |
| 53 #define FLT_DIG __FLT_DIG__ | |
| 54 #define DBL_DIG __DBL_DIG__ | |
| 55 #define LDBL_DIG __LDBL_DIG__ | |
| 56 | |
| 57 /* Minimum int x such that FLT_RADIX**(x-1) is a normalized float, emin */ | |
| 58 #undef FLT_MIN_EXP | |
| 59 #undef DBL_MIN_EXP | |
| 60 #undef LDBL_MIN_EXP | |
| 61 #define FLT_MIN_EXP __FLT_MIN_EXP__ | |
| 62 #define DBL_MIN_EXP __DBL_MIN_EXP__ | |
| 63 #define LDBL_MIN_EXP __LDBL_MIN_EXP__ | |
| 64 | |
| 65 /* Minimum negative integer such that 10 raised to that power is in the | |
| 66 range of normalized floating-point numbers, | |
| 67 | |
| 68 ceil(log10(b) * (emin - 1)) | |
| 69 */ | |
| 70 #undef FLT_MIN_10_EXP | |
| 71 #undef DBL_MIN_10_EXP | |
| 72 #undef LDBL_MIN_10_EXP | |
| 73 #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ | |
| 74 #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ | |
| 75 #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ | |
| 76 | |
| 77 /* Maximum int x such that FLT_RADIX**(x-1) is a representable float, emax. */ | |
| 78 #undef FLT_MAX_EXP | |
| 79 #undef DBL_MAX_EXP | |
| 80 #undef LDBL_MAX_EXP | |
| 81 #define FLT_MAX_EXP __FLT_MAX_EXP__ | |
| 82 #define DBL_MAX_EXP __DBL_MAX_EXP__ | |
| 83 #define LDBL_MAX_EXP __LDBL_MAX_EXP__ | |
| 84 | |
| 85 /* Maximum integer such that 10 raised to that power is in the range of | |
| 86 representable finite floating-point numbers, | |
| 87 | |
| 88 floor(log10((1 - b**-p) * b**emax)) | |
| 89 */ | |
| 90 #undef FLT_MAX_10_EXP | |
| 91 #undef DBL_MAX_10_EXP | |
| 92 #undef LDBL_MAX_10_EXP | |
| 93 #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ | |
| 94 #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ | |
| 95 #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ | |
| 96 | |
| 97 /* Maximum representable finite floating-point number, | |
| 98 | |
| 99 (1 - b**-p) * b**emax | |
| 100 */ | |
| 101 #undef FLT_MAX | |
| 102 #undef DBL_MAX | |
| 103 #undef LDBL_MAX | |
| 104 #define FLT_MAX __FLT_MAX__ | |
| 105 #define DBL_MAX __DBL_MAX__ | |
| 106 #define LDBL_MAX __LDBL_MAX__ | |
| 107 | |
| 108 /* The difference between 1 and the least value greater than 1 that is | |
| 109 representable in the given floating point type, b**1-p. */ | |
| 110 #undef FLT_EPSILON | |
| 111 #undef DBL_EPSILON | |
| 112 #undef LDBL_EPSILON | |
| 113 #define FLT_EPSILON __FLT_EPSILON__ | |
| 114 #define DBL_EPSILON __DBL_EPSILON__ | |
| 115 #define LDBL_EPSILON __LDBL_EPSILON__ | |
| 116 | |
| 117 /* Minimum normalized positive floating-point number, b**(emin - 1). */ | |
| 118 #undef FLT_MIN | |
| 119 #undef DBL_MIN | |
| 120 #undef LDBL_MIN | |
| 121 #define FLT_MIN __FLT_MIN__ | |
| 122 #define DBL_MIN __DBL_MIN__ | |
| 123 #define LDBL_MIN __LDBL_MIN__ | |
| 124 | |
| 125 /* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown. */ | |
| 126 /* ??? This is supposed to change with calls to fesetround in <fenv.h>. */ | |
| 127 #undef FLT_ROUNDS | |
| 128 #define FLT_ROUNDS 1 | |
| 129 | |
| 111 | 130 #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \ |
| 131 || (defined (__cplusplus) && __cplusplus >= 201103L) | |
| 132 /* The floating-point expression evaluation method. The precise | |
| 133 definitions of these values are generalised to include support for | |
| 134 the interchange and extended types defined in ISO/IEC TS 18661-3. | |
| 135 Prior to this (for C99/C11) the definitions were: | |
| 136 | |
| 137 -1 indeterminate | |
| 138 0 evaluate all operations and constants just to the range and | |
| 139 precision of the type | |
| 140 1 evaluate operations and constants of type float and double | |
| 141 to the range and precision of the double type, evaluate | |
| 142 long double operations and constants to the range and | |
| 143 precision of the long double type | |
| 144 2 evaluate all operations and constants to the range and | |
| 145 precision of the long double type | |
| 146 | |
| 147 The TS 18661-3 definitions are: | |
| 148 | |
| 149 -1 indeterminate | |
| 150 0 evaluate all operations and constants, whose semantic type has | |
| 151 at most the range and precision of float, to the range and | |
| 152 precision of float; evaluate all other operations and constants | |
| 153 to the range and precision of the semantic type. | |
| 154 1 evaluate all operations and constants, whose semantic type has | |
| 155 at most the range and precision of double, to the range and | |
| 156 precision of double; evaluate all other operations and constants | |
| 157 to the range and precision of the semantic type. | |
| 158 2 evaluate all operations and constants, whose semantic type has | |
| 159 at most the range and precision of long double, to the range and | |
| 160 precision of long double; evaluate all other operations and | |
| 161 constants to the range and precision of the semantic type. | |
| 162 N where _FloatN is a supported interchange floating type | |
| 163 evaluate all operations and constants, whose semantic type has | |
| 164 at most the range and precision of the _FloatN type, to the | |
| 165 range and precision of the _FloatN type; evaluate all other | |
| 166 operations and constants to the range and precision of the | |
| 167 semantic type. | |
| 168 N + 1, where _FloatNx is a supported extended floating type | |
| 169 evaluate operations and constants, whose semantic type has at | |
| 170 most the range and precision of the _FloatNx type, to the range | |
| 171 and precision of the _FloatNx type; evaluate all other | |
| 172 operations and constants to the range and precision of the | |
| 173 semantic type. | |
| 174 | |
| 175 The compiler predefines two macros: | |
| 176 | |
| 177 __FLT_EVAL_METHOD__ | |
| 178 Which, depending on the value given for | |
| 179 -fpermitted-flt-eval-methods, may be limited to only those values | |
| 180 for FLT_EVAL_METHOD defined in C99/C11. | |
| 181 | |
| 182 __FLT_EVAL_METHOD_TS_18661_3__ | |
| 183 Which always permits the values for FLT_EVAL_METHOD defined in | |
| 184 ISO/IEC TS 18661-3. | |
| 185 | |
| 186 Here we want to use __FLT_EVAL_METHOD__, unless | |
| 187 __STDC_WANT_IEC_60559_TYPES_EXT__ is defined, in which case the user | |
| 188 is specifically asking for the ISO/IEC TS 18661-3 types, so we use | |
| 189 __FLT_EVAL_METHOD_TS_18661_3__. | |
| 0 | 190 |
| 191 ??? This ought to change with the setting of the fp control word; | |
| 192 the value provided by the compiler assumes the widest setting. */ | |
| 193 #undef FLT_EVAL_METHOD | |
| 111 | 194 #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
| 195 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD_TS_18661_3__ | |
| 196 #else | |
| 0 | 197 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
| 111 | 198 #endif |
| 0 | 199 |
| 200 /* Number of decimal digits, n, such that any floating-point number in the | |
| 201 widest supported floating type with pmax radix b digits can be rounded | |
| 202 to a floating-point number with n decimal digits and back again without | |
| 203 change to the value, | |
| 204 | |
| 205 pmax * log10(b) if b is a power of 10 | |
| 206 ceil(1 + pmax * log10(b)) otherwise | |
| 207 */ | |
| 208 #undef DECIMAL_DIG | |
| 209 #define DECIMAL_DIG __DECIMAL_DIG__ | |
| 210 | |
| 211 #endif /* C99 */ | |
| 212 | |
| 111 | 213 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L |
|
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214 /* Versions of DECIMAL_DIG for each floating-point type. */ |
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215 #undef FLT_DECIMAL_DIG |
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216 #undef DBL_DECIMAL_DIG |
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217 #undef LDBL_DECIMAL_DIG |
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218 #define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ |
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219 #define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ |
| 111 | 220 #define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ |
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221 |
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222 /* Whether types support subnormal numbers. */ |
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223 #undef FLT_HAS_SUBNORM |
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224 #undef DBL_HAS_SUBNORM |
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225 #undef LDBL_HAS_SUBNORM |
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226 #define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ |
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227 #define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ |
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228 #define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ |
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229 |
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230 /* Minimum positive values, including subnormals. */ |
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231 #undef FLT_TRUE_MIN |
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232 #undef DBL_TRUE_MIN |
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233 #undef LDBL_TRUE_MIN |
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234 #define FLT_TRUE_MIN __FLT_DENORM_MIN__ |
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235 #define DBL_TRUE_MIN __DBL_DENORM_MIN__ |
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236 #define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ |
| 111 | 237 |
| 238 #endif /* C11 */ | |
| 239 | |
| 240 #ifdef __STDC_WANT_IEC_60559_BFP_EXT__ | |
| 241 /* Number of decimal digits for which conversions between decimal | |
| 242 character strings and binary formats, in both directions, are | |
| 243 correctly rounded. */ | |
| 244 #define CR_DECIMAL_DIG __UINTMAX_MAX__ | |
|
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245 #endif |
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246 |
| 111 | 247 #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
| 248 /* Constants for _FloatN and _FloatNx types from TS 18661-3. See | |
| 249 comments above for their semantics. */ | |
| 250 | |
| 251 #ifdef __FLT16_MANT_DIG__ | |
| 252 #undef FLT16_MANT_DIG | |
| 253 #define FLT16_MANT_DIG __FLT16_MANT_DIG__ | |
| 254 #undef FLT16_DIG | |
| 255 #define FLT16_DIG __FLT16_DIG__ | |
| 256 #undef FLT16_MIN_EXP | |
| 257 #define FLT16_MIN_EXP __FLT16_MIN_EXP__ | |
| 258 #undef FLT16_MIN_10_EXP | |
| 259 #define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ | |
| 260 #undef FLT16_MAX_EXP | |
| 261 #define FLT16_MAX_EXP __FLT16_MAX_EXP__ | |
| 262 #undef FLT16_MAX_10_EXP | |
| 263 #define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ | |
| 264 #undef FLT16_MAX | |
| 265 #define FLT16_MAX __FLT16_MAX__ | |
| 266 #undef FLT16_EPSILON | |
| 267 #define FLT16_EPSILON __FLT16_EPSILON__ | |
| 268 #undef FLT16_MIN | |
| 269 #define FLT16_MIN __FLT16_MIN__ | |
| 270 #undef FLT16_DECIMAL_DIG | |
| 271 #define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ | |
| 272 #undef FLT16_TRUE_MIN | |
| 273 #define FLT16_TRUE_MIN __FLT16_DENORM_MIN__ | |
| 274 #endif /* __FLT16_MANT_DIG__. */ | |
| 275 | |
| 276 #ifdef __FLT32_MANT_DIG__ | |
| 277 #undef FLT32_MANT_DIG | |
| 278 #define FLT32_MANT_DIG __FLT32_MANT_DIG__ | |
| 279 #undef FLT32_DIG | |
| 280 #define FLT32_DIG __FLT32_DIG__ | |
| 281 #undef FLT32_MIN_EXP | |
| 282 #define FLT32_MIN_EXP __FLT32_MIN_EXP__ | |
| 283 #undef FLT32_MIN_10_EXP | |
| 284 #define FLT32_MIN_10_EXP __FLT32_MIN_10_EXP__ | |
| 285 #undef FLT32_MAX_EXP | |
| 286 #define FLT32_MAX_EXP __FLT32_MAX_EXP__ | |
| 287 #undef FLT32_MAX_10_EXP | |
| 288 #define FLT32_MAX_10_EXP __FLT32_MAX_10_EXP__ | |
| 289 #undef FLT32_MAX | |
| 290 #define FLT32_MAX __FLT32_MAX__ | |
| 291 #undef FLT32_EPSILON | |
| 292 #define FLT32_EPSILON __FLT32_EPSILON__ | |
| 293 #undef FLT32_MIN | |
| 294 #define FLT32_MIN __FLT32_MIN__ | |
| 295 #undef FLT32_DECIMAL_DIG | |
| 296 #define FLT32_DECIMAL_DIG __FLT32_DECIMAL_DIG__ | |
| 297 #undef FLT32_TRUE_MIN | |
| 298 #define FLT32_TRUE_MIN __FLT32_DENORM_MIN__ | |
| 299 #endif /* __FLT32_MANT_DIG__. */ | |
| 300 | |
| 301 #ifdef __FLT64_MANT_DIG__ | |
| 302 #undef FLT64_MANT_DIG | |
| 303 #define FLT64_MANT_DIG __FLT64_MANT_DIG__ | |
| 304 #undef FLT64_DIG | |
| 305 #define FLT64_DIG __FLT64_DIG__ | |
| 306 #undef FLT64_MIN_EXP | |
| 307 #define FLT64_MIN_EXP __FLT64_MIN_EXP__ | |
| 308 #undef FLT64_MIN_10_EXP | |
| 309 #define FLT64_MIN_10_EXP __FLT64_MIN_10_EXP__ | |
| 310 #undef FLT64_MAX_EXP | |
| 311 #define FLT64_MAX_EXP __FLT64_MAX_EXP__ | |
| 312 #undef FLT64_MAX_10_EXP | |
| 313 #define FLT64_MAX_10_EXP __FLT64_MAX_10_EXP__ | |
| 314 #undef FLT64_MAX | |
| 315 #define FLT64_MAX __FLT64_MAX__ | |
| 316 #undef FLT64_EPSILON | |
| 317 #define FLT64_EPSILON __FLT64_EPSILON__ | |
| 318 #undef FLT64_MIN | |
| 319 #define FLT64_MIN __FLT64_MIN__ | |
| 320 #undef FLT64_DECIMAL_DIG | |
| 321 #define FLT64_DECIMAL_DIG __FLT64_DECIMAL_DIG__ | |
| 322 #undef FLT64_TRUE_MIN | |
| 323 #define FLT64_TRUE_MIN __FLT64_DENORM_MIN__ | |
| 324 #endif /* __FLT64_MANT_DIG__. */ | |
| 325 | |
| 326 #ifdef __FLT128_MANT_DIG__ | |
| 327 #undef FLT128_MANT_DIG | |
| 328 #define FLT128_MANT_DIG __FLT128_MANT_DIG__ | |
| 329 #undef FLT128_DIG | |
| 330 #define FLT128_DIG __FLT128_DIG__ | |
| 331 #undef FLT128_MIN_EXP | |
| 332 #define FLT128_MIN_EXP __FLT128_MIN_EXP__ | |
| 333 #undef FLT128_MIN_10_EXP | |
| 334 #define FLT128_MIN_10_EXP __FLT128_MIN_10_EXP__ | |
| 335 #undef FLT128_MAX_EXP | |
| 336 #define FLT128_MAX_EXP __FLT128_MAX_EXP__ | |
| 337 #undef FLT128_MAX_10_EXP | |
| 338 #define FLT128_MAX_10_EXP __FLT128_MAX_10_EXP__ | |
| 339 #undef FLT128_MAX | |
| 340 #define FLT128_MAX __FLT128_MAX__ | |
| 341 #undef FLT128_EPSILON | |
| 342 #define FLT128_EPSILON __FLT128_EPSILON__ | |
| 343 #undef FLT128_MIN | |
| 344 #define FLT128_MIN __FLT128_MIN__ | |
| 345 #undef FLT128_DECIMAL_DIG | |
| 346 #define FLT128_DECIMAL_DIG __FLT128_DECIMAL_DIG__ | |
| 347 #undef FLT128_TRUE_MIN | |
| 348 #define FLT128_TRUE_MIN __FLT128_DENORM_MIN__ | |
| 349 #endif /* __FLT128_MANT_DIG__. */ | |
| 350 | |
| 351 #ifdef __FLT32X_MANT_DIG__ | |
| 352 #undef FLT32X_MANT_DIG | |
| 353 #define FLT32X_MANT_DIG __FLT32X_MANT_DIG__ | |
| 354 #undef FLT32X_DIG | |
| 355 #define FLT32X_DIG __FLT32X_DIG__ | |
| 356 #undef FLT32X_MIN_EXP | |
| 357 #define FLT32X_MIN_EXP __FLT32X_MIN_EXP__ | |
| 358 #undef FLT32X_MIN_10_EXP | |
| 359 #define FLT32X_MIN_10_EXP __FLT32X_MIN_10_EXP__ | |
| 360 #undef FLT32X_MAX_EXP | |
| 361 #define FLT32X_MAX_EXP __FLT32X_MAX_EXP__ | |
| 362 #undef FLT32X_MAX_10_EXP | |
| 363 #define FLT32X_MAX_10_EXP __FLT32X_MAX_10_EXP__ | |
| 364 #undef FLT32X_MAX | |
| 365 #define FLT32X_MAX __FLT32X_MAX__ | |
| 366 #undef FLT32X_EPSILON | |
| 367 #define FLT32X_EPSILON __FLT32X_EPSILON__ | |
| 368 #undef FLT32X_MIN | |
| 369 #define FLT32X_MIN __FLT32X_MIN__ | |
| 370 #undef FLT32X_DECIMAL_DIG | |
| 371 #define FLT32X_DECIMAL_DIG __FLT32X_DECIMAL_DIG__ | |
| 372 #undef FLT32X_TRUE_MIN | |
| 373 #define FLT32X_TRUE_MIN __FLT32X_DENORM_MIN__ | |
| 374 #endif /* __FLT32X_MANT_DIG__. */ | |
| 375 | |
| 376 #ifdef __FLT64X_MANT_DIG__ | |
| 377 #undef FLT64X_MANT_DIG | |
| 378 #define FLT64X_MANT_DIG __FLT64X_MANT_DIG__ | |
| 379 #undef FLT64X_DIG | |
| 380 #define FLT64X_DIG __FLT64X_DIG__ | |
| 381 #undef FLT64X_MIN_EXP | |
| 382 #define FLT64X_MIN_EXP __FLT64X_MIN_EXP__ | |
| 383 #undef FLT64X_MIN_10_EXP | |
| 384 #define FLT64X_MIN_10_EXP __FLT64X_MIN_10_EXP__ | |
| 385 #undef FLT64X_MAX_EXP | |
| 386 #define FLT64X_MAX_EXP __FLT64X_MAX_EXP__ | |
| 387 #undef FLT64X_MAX_10_EXP | |
| 388 #define FLT64X_MAX_10_EXP __FLT64X_MAX_10_EXP__ | |
| 389 #undef FLT64X_MAX | |
| 390 #define FLT64X_MAX __FLT64X_MAX__ | |
| 391 #undef FLT64X_EPSILON | |
| 392 #define FLT64X_EPSILON __FLT64X_EPSILON__ | |
| 393 #undef FLT64X_MIN | |
| 394 #define FLT64X_MIN __FLT64X_MIN__ | |
| 395 #undef FLT64X_DECIMAL_DIG | |
| 396 #define FLT64X_DECIMAL_DIG __FLT64X_DECIMAL_DIG__ | |
| 397 #undef FLT64X_TRUE_MIN | |
| 398 #define FLT64X_TRUE_MIN __FLT64X_DENORM_MIN__ | |
| 399 #endif /* __FLT64X_MANT_DIG__. */ | |
| 400 | |
| 401 #ifdef __FLT128X_MANT_DIG__ | |
| 402 #undef FLT128X_MANT_DIG | |
| 403 #define FLT128X_MANT_DIG __FLT128X_MANT_DIG__ | |
| 404 #undef FLT128X_DIG | |
| 405 #define FLT128X_DIG __FLT128X_DIG__ | |
| 406 #undef FLT128X_MIN_EXP | |
| 407 #define FLT128X_MIN_EXP __FLT128X_MIN_EXP__ | |
| 408 #undef FLT128X_MIN_10_EXP | |
| 409 #define FLT128X_MIN_10_EXP __FLT128X_MIN_10_EXP__ | |
| 410 #undef FLT128X_MAX_EXP | |
| 411 #define FLT128X_MAX_EXP __FLT128X_MAX_EXP__ | |
| 412 #undef FLT128X_MAX_10_EXP | |
| 413 #define FLT128X_MAX_10_EXP __FLT128X_MAX_10_EXP__ | |
| 414 #undef FLT128X_MAX | |
| 415 #define FLT128X_MAX __FLT128X_MAX__ | |
| 416 #undef FLT128X_EPSILON | |
| 417 #define FLT128X_EPSILON __FLT128X_EPSILON__ | |
| 418 #undef FLT128X_MIN | |
| 419 #define FLT128X_MIN __FLT128X_MIN__ | |
| 420 #undef FLT128X_DECIMAL_DIG | |
| 421 #define FLT128X_DECIMAL_DIG __FLT128X_DECIMAL_DIG__ | |
| 422 #undef FLT128X_TRUE_MIN | |
| 423 #define FLT128X_TRUE_MIN __FLT128X_DENORM_MIN__ | |
| 424 #endif /* __FLT128X_MANT_DIG__. */ | |
| 425 | |
| 426 #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__. */ | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
427 |
| 0 | 428 #ifdef __STDC_WANT_DEC_FP__ |
| 429 /* Draft Technical Report 24732, extension for decimal floating-point | |
| 430 arithmetic: Characteristic of decimal floating types <float.h>. */ | |
| 431 | |
| 432 /* Number of base-FLT_RADIX digits in the significand, p. */ | |
| 433 #undef DEC32_MANT_DIG | |
| 434 #undef DEC64_MANT_DIG | |
| 435 #undef DEC128_MANT_DIG | |
| 436 #define DEC32_MANT_DIG __DEC32_MANT_DIG__ | |
| 437 #define DEC64_MANT_DIG __DEC64_MANT_DIG__ | |
| 438 #define DEC128_MANT_DIG __DEC128_MANT_DIG__ | |
| 439 | |
| 440 /* Minimum exponent. */ | |
| 441 #undef DEC32_MIN_EXP | |
| 442 #undef DEC64_MIN_EXP | |
| 443 #undef DEC128_MIN_EXP | |
| 444 #define DEC32_MIN_EXP __DEC32_MIN_EXP__ | |
| 445 #define DEC64_MIN_EXP __DEC64_MIN_EXP__ | |
| 446 #define DEC128_MIN_EXP __DEC128_MIN_EXP__ | |
| 447 | |
| 448 /* Maximum exponent. */ | |
| 449 #undef DEC32_MAX_EXP | |
| 450 #undef DEC64_MAX_EXP | |
| 451 #undef DEC128_MAX_EXP | |
| 452 #define DEC32_MAX_EXP __DEC32_MAX_EXP__ | |
| 453 #define DEC64_MAX_EXP __DEC64_MAX_EXP__ | |
| 454 #define DEC128_MAX_EXP __DEC128_MAX_EXP__ | |
| 455 | |
| 456 /* Maximum representable finite decimal floating-point number | |
| 457 (there are 6, 15, and 33 9s after the decimal points respectively). */ | |
| 458 #undef DEC32_MAX | |
| 459 #undef DEC64_MAX | |
| 460 #undef DEC128_MAX | |
| 461 #define DEC32_MAX __DEC32_MAX__ | |
| 462 #define DEC64_MAX __DEC64_MAX__ | |
| 463 #define DEC128_MAX __DEC128_MAX__ | |
| 464 | |
| 465 /* The difference between 1 and the least value greater than 1 that is | |
| 466 representable in the given floating point type. */ | |
| 467 #undef DEC32_EPSILON | |
| 468 #undef DEC64_EPSILON | |
| 469 #undef DEC128_EPSILON | |
| 470 #define DEC32_EPSILON __DEC32_EPSILON__ | |
| 471 #define DEC64_EPSILON __DEC64_EPSILON__ | |
| 472 #define DEC128_EPSILON __DEC128_EPSILON__ | |
| 473 | |
| 474 /* Minimum normalized positive floating-point number. */ | |
| 475 #undef DEC32_MIN | |
| 476 #undef DEC64_MIN | |
| 477 #undef DEC128_MIN | |
| 478 #define DEC32_MIN __DEC32_MIN__ | |
| 479 #define DEC64_MIN __DEC64_MIN__ | |
| 480 #define DEC128_MIN __DEC128_MIN__ | |
| 481 | |
| 482 /* Minimum subnormal positive floating-point number. */ | |
| 483 #undef DEC32_SUBNORMAL_MIN | |
| 484 #undef DEC64_SUBNORMAL_MIN | |
| 485 #undef DEC128_SUBNORMAL_MIN | |
| 486 #define DEC32_SUBNORMAL_MIN __DEC32_SUBNORMAL_MIN__ | |
| 487 #define DEC64_SUBNORMAL_MIN __DEC64_SUBNORMAL_MIN__ | |
| 488 #define DEC128_SUBNORMAL_MIN __DEC128_SUBNORMAL_MIN__ | |
| 489 | |
| 490 /* The floating-point expression evaluation method. | |
| 491 -1 indeterminate | |
| 492 0 evaluate all operations and constants just to the range and | |
| 493 precision of the type | |
| 494 1 evaluate operations and constants of type _Decimal32 | |
| 495 and _Decimal64 to the range and precision of the _Decimal64 | |
| 496 type, evaluate _Decimal128 operations and constants to the | |
| 497 range and precision of the _Decimal128 type; | |
| 498 2 evaluate all operations and constants to the range and | |
| 499 precision of the _Decimal128 type. */ | |
| 500 | |
| 501 #undef DEC_EVAL_METHOD | |
| 502 #define DEC_EVAL_METHOD __DEC_EVAL_METHOD__ | |
| 503 | |
| 504 #endif /* __STDC_WANT_DEC_FP__ */ | |
| 505 | |
| 506 #endif /* _FLOAT_H___ */ |