modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/lib/gcc/i686-linux-gnu/7/include/float.h (about) 1 /* Copyright (C) 2002-2017 Free Software Foundation, Inc. 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 1 129 130 #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__. 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 194 #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ 195 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD_TS_18661_3__ 196 #else 197 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 198 #endif 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 */ 212 213 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L 214 /* Versions of DECIMAL_DIG for each floating-point type. */ 215 #undef FLT_DECIMAL_DIG 216 #undef DBL_DECIMAL_DIG 217 #undef LDBL_DECIMAL_DIG 218 #define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ 219 #define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ 220 #define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ 221 222 /* Whether types support subnormal numbers. */ 223 #undef FLT_HAS_SUBNORM 224 #undef DBL_HAS_SUBNORM 225 #undef LDBL_HAS_SUBNORM 226 #define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ 227 #define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ 228 #define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ 229 230 /* Minimum positive values, including subnormals. */ 231 #undef FLT_TRUE_MIN 232 #undef DBL_TRUE_MIN 233 #undef LDBL_TRUE_MIN 234 #define FLT_TRUE_MIN __FLT_DENORM_MIN__ 235 #define DBL_TRUE_MIN __DBL_DENORM_MIN__ 236 #define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 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__ 245 #endif 246 247 #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__. */ 427 428 #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___ */