| 1 | // The template and inlines for the numeric_limits classes. -*- C++ -*- |
|---|---|
| 2 | |
| 3 | // Copyright (C) 1999-2016 Free Software Foundation, Inc. |
| 4 | // |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free |
| 6 | // software; you can redistribute it and/or modify it under the |
| 7 | // terms of the GNU General Public License as published by the |
| 8 | // Free Software Foundation; either version 3, or (at your option) |
| 9 | // any later version. |
| 10 | |
| 11 | // This library is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | |
| 16 | // Under Section 7 of GPL version 3, you are granted additional |
| 17 | // permissions described in the GCC Runtime Library Exception, version |
| 18 | // 3.1, as published by the Free Software Foundation. |
| 19 | |
| 20 | // You should have received a copy of the GNU General Public License and |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 23 | // <http://www.gnu.org/licenses/>. |
| 24 | |
| 25 | /** @file include/limits |
| 26 | * This is a Standard C++ Library header. |
| 27 | */ |
| 28 | |
| 29 | // Note: this is not a conforming implementation. |
| 30 | // Written by Gabriel Dos Reis <gdr@codesourcery.com> |
| 31 | |
| 32 | // |
| 33 | // ISO 14882:1998 |
| 34 | // 18.2.1 |
| 35 | // |
| 36 | |
| 37 | #ifndef _GLIBCXX_NUMERIC_LIMITS |
| 38 | #define _GLIBCXX_NUMERIC_LIMITS 1 |
| 39 | |
| 40 | #pragma GCC system_header |
| 41 | |
| 42 | #include <bits/c++config.h> |
| 43 | |
| 44 | // |
| 45 | // The numeric_limits<> traits document implementation-defined aspects |
| 46 | // of fundamental arithmetic data types (integers and floating points). |
| 47 | // From Standard C++ point of view, there are 14 such types: |
| 48 | // * integers |
| 49 | // bool (1) |
| 50 | // char, signed char, unsigned char, wchar_t (4) |
| 51 | // short, unsigned short (2) |
| 52 | // int, unsigned (2) |
| 53 | // long, unsigned long (2) |
| 54 | // |
| 55 | // * floating points |
| 56 | // float (1) |
| 57 | // double (1) |
| 58 | // long double (1) |
| 59 | // |
| 60 | // GNU C++ understands (where supported by the host C-library) |
| 61 | // * integer |
| 62 | // long long, unsigned long long (2) |
| 63 | // |
| 64 | // which brings us to 16 fundamental arithmetic data types in GNU C++. |
| 65 | // |
| 66 | // |
| 67 | // Since a numeric_limits<> is a bit tricky to get right, we rely on |
| 68 | // an interface composed of macros which should be defined in config/os |
| 69 | // or config/cpu when they differ from the generic (read arbitrary) |
| 70 | // definitions given here. |
| 71 | // |
| 72 | |
| 73 | // These values can be overridden in the target configuration file. |
| 74 | // The default values are appropriate for many 32-bit targets. |
| 75 | |
| 76 | // GCC only intrinsically supports modulo integral types. The only remaining |
| 77 | // integral exceptional values is division by zero. Only targets that do not |
| 78 | // signal division by zero in some "hard to ignore" way should use false. |
| 79 | #ifndef __glibcxx_integral_traps |
| 80 | # define __glibcxx_integral_traps true |
| 81 | #endif |
| 82 | |
| 83 | // float |
| 84 | // |
| 85 | |
| 86 | // Default values. Should be overridden in configuration files if necessary. |
| 87 | |
| 88 | #ifndef __glibcxx_float_has_denorm_loss |
| 89 | # define __glibcxx_float_has_denorm_loss false |
| 90 | #endif |
| 91 | #ifndef __glibcxx_float_traps |
| 92 | # define __glibcxx_float_traps false |
| 93 | #endif |
| 94 | #ifndef __glibcxx_float_tinyness_before |
| 95 | # define __glibcxx_float_tinyness_before false |
| 96 | #endif |
| 97 | |
| 98 | // double |
| 99 | |
| 100 | // Default values. Should be overridden in configuration files if necessary. |
| 101 | |
| 102 | #ifndef __glibcxx_double_has_denorm_loss |
| 103 | # define __glibcxx_double_has_denorm_loss false |
| 104 | #endif |
| 105 | #ifndef __glibcxx_double_traps |
| 106 | # define __glibcxx_double_traps false |
| 107 | #endif |
| 108 | #ifndef __glibcxx_double_tinyness_before |
| 109 | # define __glibcxx_double_tinyness_before false |
| 110 | #endif |
| 111 | |
| 112 | // long double |
| 113 | |
| 114 | // Default values. Should be overridden in configuration files if necessary. |
| 115 | |
| 116 | #ifndef __glibcxx_long_double_has_denorm_loss |
| 117 | # define __glibcxx_long_double_has_denorm_loss false |
| 118 | #endif |
| 119 | #ifndef __glibcxx_long_double_traps |
| 120 | # define __glibcxx_long_double_traps false |
| 121 | #endif |
| 122 | #ifndef __glibcxx_long_double_tinyness_before |
| 123 | # define __glibcxx_long_double_tinyness_before false |
| 124 | #endif |
| 125 | |
| 126 | // You should not need to define any macros below this point. |
| 127 | |
| 128 | #define __glibcxx_signed_b(T,B) ((T)(-1) < 0) |
| 129 | |
| 130 | #define __glibcxx_min_b(T,B) \ |
| 131 | (__glibcxx_signed_b (T,B) ? -__glibcxx_max_b (T,B) - 1 : (T)0) |
| 132 | |
| 133 | #define __glibcxx_max_b(T,B) \ |
| 134 | (__glibcxx_signed_b (T,B) ? \ |
| 135 | (((((T)1 << (__glibcxx_digits_b (T,B) - 1)) - 1) << 1) + 1) : ~(T)0) |
| 136 | |
| 137 | #define __glibcxx_digits_b(T,B) \ |
| 138 | (B - __glibcxx_signed_b (T,B)) |
| 139 | |
| 140 | // The fraction 643/2136 approximates log10(2) to 7 significant digits. |
| 141 | #define __glibcxx_digits10_b(T,B) \ |
| 142 | (__glibcxx_digits_b (T,B) * 643L / 2136) |
| 143 | |
| 144 | #define __glibcxx_signed(T) \ |
| 145 | __glibcxx_signed_b (T, sizeof(T) * __CHAR_BIT__) |
| 146 | #define __glibcxx_min(T) \ |
| 147 | __glibcxx_min_b (T, sizeof(T) * __CHAR_BIT__) |
| 148 | #define __glibcxx_max(T) \ |
| 149 | __glibcxx_max_b (T, sizeof(T) * __CHAR_BIT__) |
| 150 | #define __glibcxx_digits(T) \ |
| 151 | __glibcxx_digits_b (T, sizeof(T) * __CHAR_BIT__) |
| 152 | #define __glibcxx_digits10(T) \ |
| 153 | __glibcxx_digits10_b (T, sizeof(T) * __CHAR_BIT__) |
| 154 | |
| 155 | #define __glibcxx_max_digits10(T) \ |
| 156 | (2 + (T) * 643L / 2136) |
| 157 | |
| 158 | namespace std _GLIBCXX_VISIBILITY(default) |
| 159 | { |
| 160 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 161 | |
| 162 | /** |
| 163 | * @brief Describes the rounding style for floating-point types. |
| 164 | * |
| 165 | * This is used in the std::numeric_limits class. |
| 166 | */ |
| 167 | enum float_round_style |
| 168 | { |
| 169 | round_indeterminate = -1, /// Intermediate. |
| 170 | round_toward_zero = 0, /// To zero. |
| 171 | round_to_nearest = 1, /// To the nearest representable value. |
| 172 | round_toward_infinity = 2, /// To infinity. |
| 173 | round_toward_neg_infinity = 3 /// To negative infinity. |
| 174 | }; |
| 175 | |
| 176 | /** |
| 177 | * @brief Describes the denormalization for floating-point types. |
| 178 | * |
| 179 | * These values represent the presence or absence of a variable number |
| 180 | * of exponent bits. This type is used in the std::numeric_limits class. |
| 181 | */ |
| 182 | enum float_denorm_style |
| 183 | { |
| 184 | /// Indeterminate at compile time whether denormalized values are allowed. |
| 185 | denorm_indeterminate = -1, |
| 186 | /// The type does not allow denormalized values. |
| 187 | denorm_absent = 0, |
| 188 | /// The type allows denormalized values. |
| 189 | denorm_present = 1 |
| 190 | }; |
| 191 | |
| 192 | /** |
| 193 | * @brief Part of std::numeric_limits. |
| 194 | * |
| 195 | * The @c static @c const members are usable as integral constant |
| 196 | * expressions. |
| 197 | * |
| 198 | * @note This is a separate class for purposes of efficiency; you |
| 199 | * should only access these members as part of an instantiation |
| 200 | * of the std::numeric_limits class. |
| 201 | */ |
| 202 | struct __numeric_limits_base |
| 203 | { |
| 204 | /** This will be true for all fundamental types (which have |
| 205 | specializations), and false for everything else. */ |
| 206 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = false; |
| 207 | |
| 208 | /** The number of @c radix digits that be represented without change: for |
| 209 | integer types, the number of non-sign bits in the mantissa; for |
| 210 | floating types, the number of @c radix digits in the mantissa. */ |
| 211 | static _GLIBCXX_USE_CONSTEXPR int digits = 0; |
| 212 | |
| 213 | /** The number of base 10 digits that can be represented without change. */ |
| 214 | static _GLIBCXX_USE_CONSTEXPR int digits10 = 0; |
| 215 | |
| 216 | #if __cplusplus >= 201103L |
| 217 | /** The number of base 10 digits required to ensure that values which |
| 218 | differ are always differentiated. */ |
| 219 | static constexpr int max_digits10 = 0; |
| 220 | #endif |
| 221 | |
| 222 | /** True if the type is signed. */ |
| 223 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 224 | |
| 225 | /** True if the type is integer. */ |
| 226 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
| 227 | |
| 228 | /** True if the type uses an exact representation. All integer types are |
| 229 | exact, but not all exact types are integer. For example, rational and |
| 230 | fixed-exponent representations are exact but not integer. */ |
| 231 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
| 232 | |
| 233 | /** For integer types, specifies the base of the representation. For |
| 234 | floating types, specifies the base of the exponent representation. */ |
| 235 | static _GLIBCXX_USE_CONSTEXPR int radix = 0; |
| 236 | |
| 237 | /** The minimum negative integer such that @c radix raised to the power of |
| 238 | (one less than that integer) is a normalized floating point number. */ |
| 239 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 240 | |
| 241 | /** The minimum negative integer such that 10 raised to that power is in |
| 242 | the range of normalized floating point numbers. */ |
| 243 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 244 | |
| 245 | /** The maximum positive integer such that @c radix raised to the power of |
| 246 | (one less than that integer) is a representable finite floating point |
| 247 | number. */ |
| 248 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 249 | |
| 250 | /** The maximum positive integer such that 10 raised to that power is in |
| 251 | the range of representable finite floating point numbers. */ |
| 252 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 253 | |
| 254 | /** True if the type has a representation for positive infinity. */ |
| 255 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 256 | |
| 257 | /** True if the type has a representation for a quiet (non-signaling) |
| 258 | Not a Number. */ |
| 259 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 260 | |
| 261 | /** True if the type has a representation for a signaling |
| 262 | Not a Number. */ |
| 263 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 264 | |
| 265 | /** See std::float_denorm_style for more information. */ |
| 266 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm = denorm_absent; |
| 267 | |
| 268 | /** True if loss of accuracy is detected as a denormalization loss, |
| 269 | rather than as an inexact result. */ |
| 270 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 271 | |
| 272 | /** True if-and-only-if the type adheres to the IEC 559 standard, also |
| 273 | known as IEEE 754. (Only makes sense for floating point types.) */ |
| 274 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 275 | |
| 276 | /** True if the set of values representable by the type is |
| 277 | finite. All built-in types are bounded, this member would be |
| 278 | false for arbitrary precision types. */ |
| 279 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = false; |
| 280 | |
| 281 | /** True if the type is @e modulo. A type is modulo if, for any |
| 282 | operation involving +, -, or * on values of that type whose |
| 283 | result would fall outside the range [min(),max()], the value |
| 284 | returned differs from the true value by an integer multiple of |
| 285 | max() - min() + 1. On most machines, this is false for floating |
| 286 | types, true for unsigned integers, and true for signed integers. |
| 287 | See PR22200 about signed integers. */ |
| 288 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 289 | |
| 290 | /** True if trapping is implemented for this type. */ |
| 291 | static _GLIBCXX_USE_CONSTEXPR bool traps = false; |
| 292 | |
| 293 | /** True if tininess is detected before rounding. (see IEC 559) */ |
| 294 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 295 | |
| 296 | /** See std::float_round_style for more information. This is only |
| 297 | meaningful for floating types; integer types will all be |
| 298 | round_toward_zero. */ |
| 299 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style = |
| 300 | round_toward_zero; |
| 301 | }; |
| 302 | |
| 303 | /** |
| 304 | * @brief Properties of fundamental types. |
| 305 | * |
| 306 | * This class allows a program to obtain information about the |
| 307 | * representation of a fundamental type on a given platform. For |
| 308 | * non-fundamental types, the functions will return 0 and the data |
| 309 | * members will all be @c false. |
| 310 | * |
| 311 | * _GLIBCXX_RESOLVE_LIB_DEFECTS: DRs 201 and 184 (hi Gaby!) are |
| 312 | * noted, but not incorporated in this documented (yet). |
| 313 | */ |
| 314 | template<typename _Tp> |
| 315 | struct numeric_limits : public __numeric_limits_base |
| 316 | { |
| 317 | /** The minimum finite value, or for floating types with |
| 318 | denormalization, the minimum positive normalized value. */ |
| 319 | static _GLIBCXX_CONSTEXPR _Tp |
| 320 | min() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 321 | |
| 322 | /** The maximum finite value. */ |
| 323 | static _GLIBCXX_CONSTEXPR _Tp |
| 324 | max() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 325 | |
| 326 | #if __cplusplus >= 201103L |
| 327 | /** A finite value x such that there is no other finite value y |
| 328 | * where y < x. */ |
| 329 | static constexpr _Tp |
| 330 | lowest() noexcept { return _Tp(); } |
| 331 | #endif |
| 332 | |
| 333 | /** The @e machine @e epsilon: the difference between 1 and the least |
| 334 | value greater than 1 that is representable. */ |
| 335 | static _GLIBCXX_CONSTEXPR _Tp |
| 336 | epsilon() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 337 | |
| 338 | /** The maximum rounding error measurement (see LIA-1). */ |
| 339 | static _GLIBCXX_CONSTEXPR _Tp |
| 340 | round_error() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 341 | |
| 342 | /** The representation of positive infinity, if @c has_infinity. */ |
| 343 | static _GLIBCXX_CONSTEXPR _Tp |
| 344 | infinity() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 345 | |
| 346 | /** The representation of a quiet Not a Number, |
| 347 | if @c has_quiet_NaN. */ |
| 348 | static _GLIBCXX_CONSTEXPR _Tp |
| 349 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 350 | |
| 351 | /** The representation of a signaling Not a Number, if |
| 352 | @c has_signaling_NaN. */ |
| 353 | static _GLIBCXX_CONSTEXPR _Tp |
| 354 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 355 | |
| 356 | /** The minimum positive denormalized value. For types where |
| 357 | @c has_denorm is false, this is the minimum positive normalized |
| 358 | value. */ |
| 359 | static _GLIBCXX_CONSTEXPR _Tp |
| 360 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
| 361 | }; |
| 362 | |
| 363 | #if __cplusplus >= 201103L |
| 364 | template<typename _Tp> |
| 365 | struct numeric_limits<const _Tp> |
| 366 | : public numeric_limits<_Tp> { }; |
| 367 | |
| 368 | template<typename _Tp> |
| 369 | struct numeric_limits<volatile _Tp> |
| 370 | : public numeric_limits<_Tp> { }; |
| 371 | |
| 372 | template<typename _Tp> |
| 373 | struct numeric_limits<const volatile _Tp> |
| 374 | : public numeric_limits<_Tp> { }; |
| 375 | #endif |
| 376 | |
| 377 | // Now there follow 16 explicit specializations. Yes, 16. Make sure |
| 378 | // you get the count right. (18 in c++0x mode) |
| 379 | |
| 380 | /// numeric_limits<bool> specialization. |
| 381 | template<> |
| 382 | struct numeric_limits<bool> |
| 383 | { |
| 384 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 385 | |
| 386 | static _GLIBCXX_CONSTEXPR bool |
| 387 | min() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 388 | |
| 389 | static _GLIBCXX_CONSTEXPR bool |
| 390 | max() _GLIBCXX_USE_NOEXCEPT { return true; } |
| 391 | |
| 392 | #if __cplusplus >= 201103L |
| 393 | static constexpr bool |
| 394 | lowest() noexcept { return min(); } |
| 395 | #endif |
| 396 | static _GLIBCXX_USE_CONSTEXPR int digits = 1; |
| 397 | static _GLIBCXX_USE_CONSTEXPR int digits10 = 0; |
| 398 | #if __cplusplus >= 201103L |
| 399 | static constexpr int max_digits10 = 0; |
| 400 | #endif |
| 401 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 402 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 403 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 404 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 405 | |
| 406 | static _GLIBCXX_CONSTEXPR bool |
| 407 | epsilon() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 408 | |
| 409 | static _GLIBCXX_CONSTEXPR bool |
| 410 | round_error() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 411 | |
| 412 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 413 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 414 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 415 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 416 | |
| 417 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 418 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 419 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 420 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 421 | = denorm_absent; |
| 422 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 423 | |
| 424 | static _GLIBCXX_CONSTEXPR bool |
| 425 | infinity() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 426 | |
| 427 | static _GLIBCXX_CONSTEXPR bool |
| 428 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 429 | |
| 430 | static _GLIBCXX_CONSTEXPR bool |
| 431 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 432 | |
| 433 | static _GLIBCXX_CONSTEXPR bool |
| 434 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return false; } |
| 435 | |
| 436 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 437 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 438 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 439 | |
| 440 | // It is not clear what it means for a boolean type to trap. |
| 441 | // This is a DR on the LWG issue list. Here, I use integer |
| 442 | // promotion semantics. |
| 443 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 444 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 445 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 446 | = round_toward_zero; |
| 447 | }; |
| 448 | |
| 449 | /// numeric_limits<char> specialization. |
| 450 | template<> |
| 451 | struct numeric_limits<char> |
| 452 | { |
| 453 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 454 | |
| 455 | static _GLIBCXX_CONSTEXPR char |
| 456 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min(char); } |
| 457 | |
| 458 | static _GLIBCXX_CONSTEXPR char |
| 459 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max(char); } |
| 460 | |
| 461 | #if __cplusplus >= 201103L |
| 462 | static constexpr char |
| 463 | lowest() noexcept { return min(); } |
| 464 | #endif |
| 465 | |
| 466 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (char); |
| 467 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (char); |
| 468 | #if __cplusplus >= 201103L |
| 469 | static constexpr int max_digits10 = 0; |
| 470 | #endif |
| 471 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = __glibcxx_signed (char); |
| 472 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 473 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 474 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 475 | |
| 476 | static _GLIBCXX_CONSTEXPR char |
| 477 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 478 | |
| 479 | static _GLIBCXX_CONSTEXPR char |
| 480 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 481 | |
| 482 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 483 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 484 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 485 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 486 | |
| 487 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 488 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 489 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 490 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 491 | = denorm_absent; |
| 492 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 493 | |
| 494 | static _GLIBCXX_CONSTEXPR |
| 495 | char infinity() _GLIBCXX_USE_NOEXCEPT { return char(); } |
| 496 | |
| 497 | static _GLIBCXX_CONSTEXPR char |
| 498 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return char(); } |
| 499 | |
| 500 | static _GLIBCXX_CONSTEXPR char |
| 501 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return char(); } |
| 502 | |
| 503 | static _GLIBCXX_CONSTEXPR char |
| 504 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<char>(0); } |
| 505 | |
| 506 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 507 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 508 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = !is_signed; |
| 509 | |
| 510 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 511 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 512 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 513 | = round_toward_zero; |
| 514 | }; |
| 515 | |
| 516 | /// numeric_limits<signed char> specialization. |
| 517 | template<> |
| 518 | struct numeric_limits<signed char> |
| 519 | { |
| 520 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 521 | |
| 522 | static _GLIBCXX_CONSTEXPR signed char |
| 523 | min() _GLIBCXX_USE_NOEXCEPT { return -__SCHAR_MAX__ - 1; } |
| 524 | |
| 525 | static _GLIBCXX_CONSTEXPR signed char |
| 526 | max() _GLIBCXX_USE_NOEXCEPT { return __SCHAR_MAX__; } |
| 527 | |
| 528 | #if __cplusplus >= 201103L |
| 529 | static constexpr signed char |
| 530 | lowest() noexcept { return min(); } |
| 531 | #endif |
| 532 | |
| 533 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (signed char); |
| 534 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 535 | = __glibcxx_digits10 (signed char); |
| 536 | #if __cplusplus >= 201103L |
| 537 | static constexpr int max_digits10 = 0; |
| 538 | #endif |
| 539 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 540 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 541 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 542 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 543 | |
| 544 | static _GLIBCXX_CONSTEXPR signed char |
| 545 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 546 | |
| 547 | static _GLIBCXX_CONSTEXPR signed char |
| 548 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 549 | |
| 550 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 551 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 552 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 553 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 554 | |
| 555 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 556 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 557 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 558 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 559 | = denorm_absent; |
| 560 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 561 | |
| 562 | static _GLIBCXX_CONSTEXPR signed char |
| 563 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<signed char>(0); } |
| 564 | |
| 565 | static _GLIBCXX_CONSTEXPR signed char |
| 566 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<signed char>(0); } |
| 567 | |
| 568 | static _GLIBCXX_CONSTEXPR signed char |
| 569 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 570 | { return static_cast<signed char>(0); } |
| 571 | |
| 572 | static _GLIBCXX_CONSTEXPR signed char |
| 573 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
| 574 | { return static_cast<signed char>(0); } |
| 575 | |
| 576 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 577 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 578 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 579 | |
| 580 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 581 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 582 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 583 | = round_toward_zero; |
| 584 | }; |
| 585 | |
| 586 | /// numeric_limits<unsigned char> specialization. |
| 587 | template<> |
| 588 | struct numeric_limits<unsigned char> |
| 589 | { |
| 590 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 591 | |
| 592 | static _GLIBCXX_CONSTEXPR unsigned char |
| 593 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 594 | |
| 595 | static _GLIBCXX_CONSTEXPR unsigned char |
| 596 | max() _GLIBCXX_USE_NOEXCEPT { return __SCHAR_MAX__ * 2U + 1; } |
| 597 | |
| 598 | #if __cplusplus >= 201103L |
| 599 | static constexpr unsigned char |
| 600 | lowest() noexcept { return min(); } |
| 601 | #endif |
| 602 | |
| 603 | static _GLIBCXX_USE_CONSTEXPR int digits |
| 604 | = __glibcxx_digits (unsigned char); |
| 605 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 606 | = __glibcxx_digits10 (unsigned char); |
| 607 | #if __cplusplus >= 201103L |
| 608 | static constexpr int max_digits10 = 0; |
| 609 | #endif |
| 610 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 611 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 612 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 613 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 614 | |
| 615 | static _GLIBCXX_CONSTEXPR unsigned char |
| 616 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 617 | |
| 618 | static _GLIBCXX_CONSTEXPR unsigned char |
| 619 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 620 | |
| 621 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 622 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 623 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 624 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 625 | |
| 626 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 627 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 628 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 629 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 630 | = denorm_absent; |
| 631 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 632 | |
| 633 | static _GLIBCXX_CONSTEXPR unsigned char |
| 634 | infinity() _GLIBCXX_USE_NOEXCEPT |
| 635 | { return static_cast<unsigned char>(0); } |
| 636 | |
| 637 | static _GLIBCXX_CONSTEXPR unsigned char |
| 638 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
| 639 | { return static_cast<unsigned char>(0); } |
| 640 | |
| 641 | static _GLIBCXX_CONSTEXPR unsigned char |
| 642 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 643 | { return static_cast<unsigned char>(0); } |
| 644 | |
| 645 | static _GLIBCXX_CONSTEXPR unsigned char |
| 646 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
| 647 | { return static_cast<unsigned char>(0); } |
| 648 | |
| 649 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 650 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 651 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
| 652 | |
| 653 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 654 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 655 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 656 | = round_toward_zero; |
| 657 | }; |
| 658 | |
| 659 | /// numeric_limits<wchar_t> specialization. |
| 660 | template<> |
| 661 | struct numeric_limits<wchar_t> |
| 662 | { |
| 663 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 664 | |
| 665 | static _GLIBCXX_CONSTEXPR wchar_t |
| 666 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min (wchar_t); } |
| 667 | |
| 668 | static _GLIBCXX_CONSTEXPR wchar_t |
| 669 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max (wchar_t); } |
| 670 | |
| 671 | #if __cplusplus >= 201103L |
| 672 | static constexpr wchar_t |
| 673 | lowest() noexcept { return min(); } |
| 674 | #endif |
| 675 | |
| 676 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (wchar_t); |
| 677 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 678 | = __glibcxx_digits10 (wchar_t); |
| 679 | #if __cplusplus >= 201103L |
| 680 | static constexpr int max_digits10 = 0; |
| 681 | #endif |
| 682 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = __glibcxx_signed (wchar_t); |
| 683 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 684 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 685 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 686 | |
| 687 | static _GLIBCXX_CONSTEXPR wchar_t |
| 688 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 689 | |
| 690 | static _GLIBCXX_CONSTEXPR wchar_t |
| 691 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 692 | |
| 693 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 694 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 695 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 696 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 697 | |
| 698 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 699 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 700 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 701 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 702 | = denorm_absent; |
| 703 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 704 | |
| 705 | static _GLIBCXX_CONSTEXPR wchar_t |
| 706 | infinity() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
| 707 | |
| 708 | static _GLIBCXX_CONSTEXPR wchar_t |
| 709 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
| 710 | |
| 711 | static _GLIBCXX_CONSTEXPR wchar_t |
| 712 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
| 713 | |
| 714 | static _GLIBCXX_CONSTEXPR wchar_t |
| 715 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
| 716 | |
| 717 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 718 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 719 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = !is_signed; |
| 720 | |
| 721 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 722 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 723 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 724 | = round_toward_zero; |
| 725 | }; |
| 726 | |
| 727 | #if __cplusplus >= 201103L |
| 728 | /// numeric_limits<char16_t> specialization. |
| 729 | template<> |
| 730 | struct numeric_limits<char16_t> |
| 731 | { |
| 732 | static constexpr bool is_specialized = true; |
| 733 | |
| 734 | static constexpr char16_t |
| 735 | min() noexcept { return __glibcxx_min (char16_t); } |
| 736 | |
| 737 | static constexpr char16_t |
| 738 | max() noexcept { return __glibcxx_max (char16_t); } |
| 739 | |
| 740 | static constexpr char16_t |
| 741 | lowest() noexcept { return min(); } |
| 742 | |
| 743 | static constexpr int digits = __glibcxx_digits (char16_t); |
| 744 | static constexpr int digits10 = __glibcxx_digits10 (char16_t); |
| 745 | static constexpr int max_digits10 = 0; |
| 746 | static constexpr bool is_signed = __glibcxx_signed (char16_t); |
| 747 | static constexpr bool is_integer = true; |
| 748 | static constexpr bool is_exact = true; |
| 749 | static constexpr int radix = 2; |
| 750 | |
| 751 | static constexpr char16_t |
| 752 | epsilon() noexcept { return 0; } |
| 753 | |
| 754 | static constexpr char16_t |
| 755 | round_error() noexcept { return 0; } |
| 756 | |
| 757 | static constexpr int min_exponent = 0; |
| 758 | static constexpr int min_exponent10 = 0; |
| 759 | static constexpr int max_exponent = 0; |
| 760 | static constexpr int max_exponent10 = 0; |
| 761 | |
| 762 | static constexpr bool has_infinity = false; |
| 763 | static constexpr bool has_quiet_NaN = false; |
| 764 | static constexpr bool has_signaling_NaN = false; |
| 765 | static constexpr float_denorm_style has_denorm = denorm_absent; |
| 766 | static constexpr bool has_denorm_loss = false; |
| 767 | |
| 768 | static constexpr char16_t |
| 769 | infinity() noexcept { return char16_t(); } |
| 770 | |
| 771 | static constexpr char16_t |
| 772 | quiet_NaN() noexcept { return char16_t(); } |
| 773 | |
| 774 | static constexpr char16_t |
| 775 | signaling_NaN() noexcept { return char16_t(); } |
| 776 | |
| 777 | static constexpr char16_t |
| 778 | denorm_min() noexcept { return char16_t(); } |
| 779 | |
| 780 | static constexpr bool is_iec559 = false; |
| 781 | static constexpr bool is_bounded = true; |
| 782 | static constexpr bool is_modulo = !is_signed; |
| 783 | |
| 784 | static constexpr bool traps = __glibcxx_integral_traps; |
| 785 | static constexpr bool tinyness_before = false; |
| 786 | static constexpr float_round_style round_style = round_toward_zero; |
| 787 | }; |
| 788 | |
| 789 | /// numeric_limits<char32_t> specialization. |
| 790 | template<> |
| 791 | struct numeric_limits<char32_t> |
| 792 | { |
| 793 | static constexpr bool is_specialized = true; |
| 794 | |
| 795 | static constexpr char32_t |
| 796 | min() noexcept { return __glibcxx_min (char32_t); } |
| 797 | |
| 798 | static constexpr char32_t |
| 799 | max() noexcept { return __glibcxx_max (char32_t); } |
| 800 | |
| 801 | static constexpr char32_t |
| 802 | lowest() noexcept { return min(); } |
| 803 | |
| 804 | static constexpr int digits = __glibcxx_digits (char32_t); |
| 805 | static constexpr int digits10 = __glibcxx_digits10 (char32_t); |
| 806 | static constexpr int max_digits10 = 0; |
| 807 | static constexpr bool is_signed = __glibcxx_signed (char32_t); |
| 808 | static constexpr bool is_integer = true; |
| 809 | static constexpr bool is_exact = true; |
| 810 | static constexpr int radix = 2; |
| 811 | |
| 812 | static constexpr char32_t |
| 813 | epsilon() noexcept { return 0; } |
| 814 | |
| 815 | static constexpr char32_t |
| 816 | round_error() noexcept { return 0; } |
| 817 | |
| 818 | static constexpr int min_exponent = 0; |
| 819 | static constexpr int min_exponent10 = 0; |
| 820 | static constexpr int max_exponent = 0; |
| 821 | static constexpr int max_exponent10 = 0; |
| 822 | |
| 823 | static constexpr bool has_infinity = false; |
| 824 | static constexpr bool has_quiet_NaN = false; |
| 825 | static constexpr bool has_signaling_NaN = false; |
| 826 | static constexpr float_denorm_style has_denorm = denorm_absent; |
| 827 | static constexpr bool has_denorm_loss = false; |
| 828 | |
| 829 | static constexpr char32_t |
| 830 | infinity() noexcept { return char32_t(); } |
| 831 | |
| 832 | static constexpr char32_t |
| 833 | quiet_NaN() noexcept { return char32_t(); } |
| 834 | |
| 835 | static constexpr char32_t |
| 836 | signaling_NaN() noexcept { return char32_t(); } |
| 837 | |
| 838 | static constexpr char32_t |
| 839 | denorm_min() noexcept { return char32_t(); } |
| 840 | |
| 841 | static constexpr bool is_iec559 = false; |
| 842 | static constexpr bool is_bounded = true; |
| 843 | static constexpr bool is_modulo = !is_signed; |
| 844 | |
| 845 | static constexpr bool traps = __glibcxx_integral_traps; |
| 846 | static constexpr bool tinyness_before = false; |
| 847 | static constexpr float_round_style round_style = round_toward_zero; |
| 848 | }; |
| 849 | #endif |
| 850 | |
| 851 | /// numeric_limits<short> specialization. |
| 852 | template<> |
| 853 | struct numeric_limits<short> |
| 854 | { |
| 855 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 856 | |
| 857 | static _GLIBCXX_CONSTEXPR short |
| 858 | min() _GLIBCXX_USE_NOEXCEPT { return -__SHRT_MAX__ - 1; } |
| 859 | |
| 860 | static _GLIBCXX_CONSTEXPR short |
| 861 | max() _GLIBCXX_USE_NOEXCEPT { return __SHRT_MAX__; } |
| 862 | |
| 863 | #if __cplusplus >= 201103L |
| 864 | static constexpr short |
| 865 | lowest() noexcept { return min(); } |
| 866 | #endif |
| 867 | |
| 868 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (short); |
| 869 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (short); |
| 870 | #if __cplusplus >= 201103L |
| 871 | static constexpr int max_digits10 = 0; |
| 872 | #endif |
| 873 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 874 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 875 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 876 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 877 | |
| 878 | static _GLIBCXX_CONSTEXPR short |
| 879 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 880 | |
| 881 | static _GLIBCXX_CONSTEXPR short |
| 882 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 883 | |
| 884 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 885 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 886 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 887 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 888 | |
| 889 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 890 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 891 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 892 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 893 | = denorm_absent; |
| 894 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 895 | |
| 896 | static _GLIBCXX_CONSTEXPR short |
| 897 | infinity() _GLIBCXX_USE_NOEXCEPT { return short(); } |
| 898 | |
| 899 | static _GLIBCXX_CONSTEXPR short |
| 900 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return short(); } |
| 901 | |
| 902 | static _GLIBCXX_CONSTEXPR short |
| 903 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return short(); } |
| 904 | |
| 905 | static _GLIBCXX_CONSTEXPR short |
| 906 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return short(); } |
| 907 | |
| 908 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 909 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 910 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 911 | |
| 912 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 913 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 914 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 915 | = round_toward_zero; |
| 916 | }; |
| 917 | |
| 918 | /// numeric_limits<unsigned short> specialization. |
| 919 | template<> |
| 920 | struct numeric_limits<unsigned short> |
| 921 | { |
| 922 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 923 | |
| 924 | static _GLIBCXX_CONSTEXPR unsigned short |
| 925 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 926 | |
| 927 | static _GLIBCXX_CONSTEXPR unsigned short |
| 928 | max() _GLIBCXX_USE_NOEXCEPT { return __SHRT_MAX__ * 2U + 1; } |
| 929 | |
| 930 | #if __cplusplus >= 201103L |
| 931 | static constexpr unsigned short |
| 932 | lowest() noexcept { return min(); } |
| 933 | #endif |
| 934 | |
| 935 | static _GLIBCXX_USE_CONSTEXPR int digits |
| 936 | = __glibcxx_digits (unsigned short); |
| 937 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 938 | = __glibcxx_digits10 (unsigned short); |
| 939 | #if __cplusplus >= 201103L |
| 940 | static constexpr int max_digits10 = 0; |
| 941 | #endif |
| 942 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 943 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 944 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 945 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 946 | |
| 947 | static _GLIBCXX_CONSTEXPR unsigned short |
| 948 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 949 | |
| 950 | static _GLIBCXX_CONSTEXPR unsigned short |
| 951 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 952 | |
| 953 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 954 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 955 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 956 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 957 | |
| 958 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 959 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 960 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 961 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 962 | = denorm_absent; |
| 963 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 964 | |
| 965 | static _GLIBCXX_CONSTEXPR unsigned short |
| 966 | infinity() _GLIBCXX_USE_NOEXCEPT |
| 967 | { return static_cast<unsigned short>(0); } |
| 968 | |
| 969 | static _GLIBCXX_CONSTEXPR unsigned short |
| 970 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
| 971 | { return static_cast<unsigned short>(0); } |
| 972 | |
| 973 | static _GLIBCXX_CONSTEXPR unsigned short |
| 974 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 975 | { return static_cast<unsigned short>(0); } |
| 976 | |
| 977 | static _GLIBCXX_CONSTEXPR unsigned short |
| 978 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
| 979 | { return static_cast<unsigned short>(0); } |
| 980 | |
| 981 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 982 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 983 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
| 984 | |
| 985 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 986 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 987 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 988 | = round_toward_zero; |
| 989 | }; |
| 990 | |
| 991 | /// numeric_limits<int> specialization. |
| 992 | template<> |
| 993 | struct numeric_limits<int> |
| 994 | { |
| 995 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 996 | |
| 997 | static _GLIBCXX_CONSTEXPR int |
| 998 | min() _GLIBCXX_USE_NOEXCEPT { return -__INT_MAX__ - 1; } |
| 999 | |
| 1000 | static _GLIBCXX_CONSTEXPR int |
| 1001 | max() _GLIBCXX_USE_NOEXCEPT { return __INT_MAX__; } |
| 1002 | |
| 1003 | #if __cplusplus >= 201103L |
| 1004 | static constexpr int |
| 1005 | lowest() noexcept { return min(); } |
| 1006 | #endif |
| 1007 | |
| 1008 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (int); |
| 1009 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (int); |
| 1010 | #if __cplusplus >= 201103L |
| 1011 | static constexpr int max_digits10 = 0; |
| 1012 | #endif |
| 1013 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 1014 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 1015 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 1016 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 1017 | |
| 1018 | static _GLIBCXX_CONSTEXPR int |
| 1019 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1020 | |
| 1021 | static _GLIBCXX_CONSTEXPR int |
| 1022 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1023 | |
| 1024 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 1025 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 1026 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 1027 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 1028 | |
| 1029 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 1030 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 1031 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 1032 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1033 | = denorm_absent; |
| 1034 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 1035 | |
| 1036 | static _GLIBCXX_CONSTEXPR int |
| 1037 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
| 1038 | |
| 1039 | static _GLIBCXX_CONSTEXPR int |
| 1040 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
| 1041 | |
| 1042 | static _GLIBCXX_CONSTEXPR int |
| 1043 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
| 1044 | |
| 1045 | static _GLIBCXX_CONSTEXPR int |
| 1046 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
| 1047 | |
| 1048 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 1049 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1050 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 1051 | |
| 1052 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 1053 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 1054 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1055 | = round_toward_zero; |
| 1056 | }; |
| 1057 | |
| 1058 | /// numeric_limits<unsigned int> specialization. |
| 1059 | template<> |
| 1060 | struct numeric_limits<unsigned int> |
| 1061 | { |
| 1062 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1063 | |
| 1064 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1065 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1066 | |
| 1067 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1068 | max() _GLIBCXX_USE_NOEXCEPT { return __INT_MAX__ * 2U + 1; } |
| 1069 | |
| 1070 | #if __cplusplus >= 201103L |
| 1071 | static constexpr unsigned int |
| 1072 | lowest() noexcept { return min(); } |
| 1073 | #endif |
| 1074 | |
| 1075 | static _GLIBCXX_USE_CONSTEXPR int digits |
| 1076 | = __glibcxx_digits (unsigned int); |
| 1077 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 1078 | = __glibcxx_digits10 (unsigned int); |
| 1079 | #if __cplusplus >= 201103L |
| 1080 | static constexpr int max_digits10 = 0; |
| 1081 | #endif |
| 1082 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 1083 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 1084 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 1085 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 1086 | |
| 1087 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1088 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1089 | |
| 1090 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1091 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1092 | |
| 1093 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 1094 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 1095 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 1096 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 1097 | |
| 1098 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 1099 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 1100 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 1101 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1102 | = denorm_absent; |
| 1103 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 1104 | |
| 1105 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1106 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<unsigned int>(0); } |
| 1107 | |
| 1108 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1109 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1110 | { return static_cast<unsigned int>(0); } |
| 1111 | |
| 1112 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1113 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1114 | { return static_cast<unsigned int>(0); } |
| 1115 | |
| 1116 | static _GLIBCXX_CONSTEXPR unsigned int |
| 1117 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
| 1118 | { return static_cast<unsigned int>(0); } |
| 1119 | |
| 1120 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 1121 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1122 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
| 1123 | |
| 1124 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 1125 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 1126 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1127 | = round_toward_zero; |
| 1128 | }; |
| 1129 | |
| 1130 | /// numeric_limits<long> specialization. |
| 1131 | template<> |
| 1132 | struct numeric_limits<long> |
| 1133 | { |
| 1134 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1135 | |
| 1136 | static _GLIBCXX_CONSTEXPR long |
| 1137 | min() _GLIBCXX_USE_NOEXCEPT { return -__LONG_MAX__ - 1; } |
| 1138 | |
| 1139 | static _GLIBCXX_CONSTEXPR long |
| 1140 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_MAX__; } |
| 1141 | |
| 1142 | #if __cplusplus >= 201103L |
| 1143 | static constexpr long |
| 1144 | lowest() noexcept { return min(); } |
| 1145 | #endif |
| 1146 | |
| 1147 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (long); |
| 1148 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (long); |
| 1149 | #if __cplusplus >= 201103L |
| 1150 | static constexpr int max_digits10 = 0; |
| 1151 | #endif |
| 1152 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 1153 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 1154 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 1155 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 1156 | |
| 1157 | static _GLIBCXX_CONSTEXPR long |
| 1158 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1159 | |
| 1160 | static _GLIBCXX_CONSTEXPR long |
| 1161 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1162 | |
| 1163 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 1164 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 1165 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 1166 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 1167 | |
| 1168 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 1169 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 1170 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 1171 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1172 | = denorm_absent; |
| 1173 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 1174 | |
| 1175 | static _GLIBCXX_CONSTEXPR long |
| 1176 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
| 1177 | |
| 1178 | static _GLIBCXX_CONSTEXPR long |
| 1179 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
| 1180 | |
| 1181 | static _GLIBCXX_CONSTEXPR long |
| 1182 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
| 1183 | |
| 1184 | static _GLIBCXX_CONSTEXPR long |
| 1185 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
| 1186 | |
| 1187 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 1188 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1189 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 1190 | |
| 1191 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 1192 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 1193 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1194 | = round_toward_zero; |
| 1195 | }; |
| 1196 | |
| 1197 | /// numeric_limits<unsigned long> specialization. |
| 1198 | template<> |
| 1199 | struct numeric_limits<unsigned long> |
| 1200 | { |
| 1201 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1202 | |
| 1203 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1204 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1205 | |
| 1206 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1207 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_MAX__ * 2UL + 1; } |
| 1208 | |
| 1209 | #if __cplusplus >= 201103L |
| 1210 | static constexpr unsigned long |
| 1211 | lowest() noexcept { return min(); } |
| 1212 | #endif |
| 1213 | |
| 1214 | static _GLIBCXX_USE_CONSTEXPR int digits |
| 1215 | = __glibcxx_digits (unsigned long); |
| 1216 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 1217 | = __glibcxx_digits10 (unsigned long); |
| 1218 | #if __cplusplus >= 201103L |
| 1219 | static constexpr int max_digits10 = 0; |
| 1220 | #endif |
| 1221 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 1222 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 1223 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 1224 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 1225 | |
| 1226 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1227 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1228 | |
| 1229 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1230 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1231 | |
| 1232 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 1233 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 1234 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 1235 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 1236 | |
| 1237 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 1238 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 1239 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 1240 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1241 | = denorm_absent; |
| 1242 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 1243 | |
| 1244 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1245 | infinity() _GLIBCXX_USE_NOEXCEPT |
| 1246 | { return static_cast<unsigned long>(0); } |
| 1247 | |
| 1248 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1249 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1250 | { return static_cast<unsigned long>(0); } |
| 1251 | |
| 1252 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1253 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1254 | { return static_cast<unsigned long>(0); } |
| 1255 | |
| 1256 | static _GLIBCXX_CONSTEXPR unsigned long |
| 1257 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
| 1258 | { return static_cast<unsigned long>(0); } |
| 1259 | |
| 1260 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 1261 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1262 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
| 1263 | |
| 1264 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 1265 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 1266 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1267 | = round_toward_zero; |
| 1268 | }; |
| 1269 | |
| 1270 | /// numeric_limits<long long> specialization. |
| 1271 | template<> |
| 1272 | struct numeric_limits<long long> |
| 1273 | { |
| 1274 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1275 | |
| 1276 | static _GLIBCXX_CONSTEXPR long long |
| 1277 | min() _GLIBCXX_USE_NOEXCEPT { return -__LONG_LONG_MAX__ - 1; } |
| 1278 | |
| 1279 | static _GLIBCXX_CONSTEXPR long long |
| 1280 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_LONG_MAX__; } |
| 1281 | |
| 1282 | #if __cplusplus >= 201103L |
| 1283 | static constexpr long long |
| 1284 | lowest() noexcept { return min(); } |
| 1285 | #endif |
| 1286 | |
| 1287 | static _GLIBCXX_USE_CONSTEXPR int digits |
| 1288 | = __glibcxx_digits (long long); |
| 1289 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 1290 | = __glibcxx_digits10 (long long); |
| 1291 | #if __cplusplus >= 201103L |
| 1292 | static constexpr int max_digits10 = 0; |
| 1293 | #endif |
| 1294 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 1295 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 1296 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 1297 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 1298 | |
| 1299 | static _GLIBCXX_CONSTEXPR long long |
| 1300 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1301 | |
| 1302 | static _GLIBCXX_CONSTEXPR long long |
| 1303 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1304 | |
| 1305 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 1306 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 1307 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 1308 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 1309 | |
| 1310 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 1311 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 1312 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 1313 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1314 | = denorm_absent; |
| 1315 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 1316 | |
| 1317 | static _GLIBCXX_CONSTEXPR long long |
| 1318 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<long long>(0); } |
| 1319 | |
| 1320 | static _GLIBCXX_CONSTEXPR long long |
| 1321 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<long long>(0); } |
| 1322 | |
| 1323 | static _GLIBCXX_CONSTEXPR long long |
| 1324 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1325 | { return static_cast<long long>(0); } |
| 1326 | |
| 1327 | static _GLIBCXX_CONSTEXPR long long |
| 1328 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<long long>(0); } |
| 1329 | |
| 1330 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 1331 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1332 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 1333 | |
| 1334 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 1335 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 1336 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1337 | = round_toward_zero; |
| 1338 | }; |
| 1339 | |
| 1340 | /// numeric_limits<unsigned long long> specialization. |
| 1341 | template<> |
| 1342 | struct numeric_limits<unsigned long long> |
| 1343 | { |
| 1344 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1345 | |
| 1346 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1347 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1348 | |
| 1349 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1350 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_LONG_MAX__ * 2ULL + 1; } |
| 1351 | |
| 1352 | #if __cplusplus >= 201103L |
| 1353 | static constexpr unsigned long long |
| 1354 | lowest() noexcept { return min(); } |
| 1355 | #endif |
| 1356 | |
| 1357 | static _GLIBCXX_USE_CONSTEXPR int digits |
| 1358 | = __glibcxx_digits (unsigned long long); |
| 1359 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
| 1360 | = __glibcxx_digits10 (unsigned long long); |
| 1361 | #if __cplusplus >= 201103L |
| 1362 | static constexpr int max_digits10 = 0; |
| 1363 | #endif |
| 1364 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
| 1365 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
| 1366 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
| 1367 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
| 1368 | |
| 1369 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1370 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1371 | |
| 1372 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1373 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
| 1374 | |
| 1375 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
| 1376 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
| 1377 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
| 1378 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
| 1379 | |
| 1380 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
| 1381 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
| 1382 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
| 1383 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1384 | = denorm_absent; |
| 1385 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
| 1386 | |
| 1387 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1388 | infinity() _GLIBCXX_USE_NOEXCEPT |
| 1389 | { return static_cast<unsigned long long>(0); } |
| 1390 | |
| 1391 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1392 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1393 | { return static_cast<unsigned long long>(0); } |
| 1394 | |
| 1395 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1396 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
| 1397 | { return static_cast<unsigned long long>(0); } |
| 1398 | |
| 1399 | static _GLIBCXX_CONSTEXPR unsigned long long |
| 1400 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
| 1401 | { return static_cast<unsigned long long>(0); } |
| 1402 | |
| 1403 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
| 1404 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1405 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
| 1406 | |
| 1407 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
| 1408 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
| 1409 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1410 | = round_toward_zero; |
| 1411 | }; |
| 1412 | |
| 1413 | #if !defined(__STRICT_ANSI__) |
| 1414 | |
| 1415 | #define __INT_N(TYPE, BITSIZE, EXT, UEXT) \ |
| 1416 | template<> \ |
| 1417 | struct numeric_limits<TYPE> \ |
| 1418 | { \ |
| 1419 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; \ |
| 1420 | \ |
| 1421 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1422 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min_b (TYPE, BITSIZE); } \ |
| 1423 | \ |
| 1424 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1425 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max_b (TYPE, BITSIZE); } \ |
| 1426 | \ |
| 1427 | static _GLIBCXX_USE_CONSTEXPR int digits \ |
| 1428 | = BITSIZE - 1; \ |
| 1429 | static _GLIBCXX_USE_CONSTEXPR int digits10 \ |
| 1430 | = (BITSIZE - 1) * 643L / 2136; \ |
| 1431 | \ |
| 1432 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; \ |
| 1433 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; \ |
| 1434 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; \ |
| 1435 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; \ |
| 1436 | \ |
| 1437 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1438 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
| 1439 | \ |
| 1440 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1441 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
| 1442 | \ |
| 1443 | EXT \ |
| 1444 | \ |
| 1445 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; \ |
| 1446 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; \ |
| 1447 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; \ |
| 1448 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; \ |
| 1449 | \ |
| 1450 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; \ |
| 1451 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; \ |
| 1452 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; \ |
| 1453 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm \ |
| 1454 | = denorm_absent; \ |
| 1455 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; \ |
| 1456 | \ |
| 1457 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1458 | infinity() _GLIBCXX_USE_NOEXCEPT \ |
| 1459 | { return static_cast<TYPE>(0); } \ |
| 1460 | \ |
| 1461 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1462 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT \ |
| 1463 | { return static_cast<TYPE>(0); } \ |
| 1464 | \ |
| 1465 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1466 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT \ |
| 1467 | { return static_cast<TYPE>(0); } \ |
| 1468 | \ |
| 1469 | static _GLIBCXX_CONSTEXPR TYPE \ |
| 1470 | denorm_min() _GLIBCXX_USE_NOEXCEPT \ |
| 1471 | { return static_cast<TYPE>(0); } \ |
| 1472 | \ |
| 1473 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; \ |
| 1474 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; \ |
| 1475 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; \ |
| 1476 | \ |
| 1477 | static _GLIBCXX_USE_CONSTEXPR bool traps \ |
| 1478 | = __glibcxx_integral_traps; \ |
| 1479 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; \ |
| 1480 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style \ |
| 1481 | = round_toward_zero; \ |
| 1482 | }; \ |
| 1483 | \ |
| 1484 | template<> \ |
| 1485 | struct numeric_limits<unsigned TYPE> \ |
| 1486 | { \ |
| 1487 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; \ |
| 1488 | \ |
| 1489 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1490 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
| 1491 | \ |
| 1492 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1493 | max() _GLIBCXX_USE_NOEXCEPT \ |
| 1494 | { return __glibcxx_max_b (unsigned TYPE, BITSIZE); } \ |
| 1495 | \ |
| 1496 | UEXT \ |
| 1497 | \ |
| 1498 | static _GLIBCXX_USE_CONSTEXPR int digits \ |
| 1499 | = BITSIZE; \ |
| 1500 | static _GLIBCXX_USE_CONSTEXPR int digits10 \ |
| 1501 | = BITSIZE * 643L / 2136; \ |
| 1502 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; \ |
| 1503 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; \ |
| 1504 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; \ |
| 1505 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; \ |
| 1506 | \ |
| 1507 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1508 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
| 1509 | \ |
| 1510 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1511 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
| 1512 | \ |
| 1513 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; \ |
| 1514 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; \ |
| 1515 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; \ |
| 1516 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; \ |
| 1517 | \ |
| 1518 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; \ |
| 1519 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; \ |
| 1520 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; \ |
| 1521 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm \ |
| 1522 | = denorm_absent; \ |
| 1523 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; \ |
| 1524 | \ |
| 1525 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1526 | infinity() _GLIBCXX_USE_NOEXCEPT \ |
| 1527 | { return static_cast<unsigned TYPE>(0); } \ |
| 1528 | \ |
| 1529 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1530 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT \ |
| 1531 | { return static_cast<unsigned TYPE>(0); } \ |
| 1532 | \ |
| 1533 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1534 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT \ |
| 1535 | { return static_cast<unsigned TYPE>(0); } \ |
| 1536 | \ |
| 1537 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
| 1538 | denorm_min() _GLIBCXX_USE_NOEXCEPT \ |
| 1539 | { return static_cast<unsigned TYPE>(0); } \ |
| 1540 | \ |
| 1541 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; \ |
| 1542 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; \ |
| 1543 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; \ |
| 1544 | \ |
| 1545 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; \ |
| 1546 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; \ |
| 1547 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style \ |
| 1548 | = round_toward_zero; \ |
| 1549 | }; |
| 1550 | |
| 1551 | #if __cplusplus >= 201103L |
| 1552 | |
| 1553 | #define __INT_N_201103(TYPE) \ |
| 1554 | static constexpr TYPE \ |
| 1555 | lowest() noexcept { return min(); } \ |
| 1556 | static constexpr int max_digits10 = 0; |
| 1557 | |
| 1558 | #define __INT_N_U201103(TYPE) \ |
| 1559 | static constexpr unsigned TYPE \ |
| 1560 | lowest() noexcept { return min(); } \ |
| 1561 | static constexpr int max_digits10 = 0; |
| 1562 | |
| 1563 | #else |
| 1564 | #define __INT_N_201103(TYPE) |
| 1565 | #define __INT_N_U201103(TYPE) |
| 1566 | #endif |
| 1567 | |
| 1568 | #ifdef __GLIBCXX_TYPE_INT_N_0 |
| 1569 | __INT_N(__GLIBCXX_TYPE_INT_N_0, __GLIBCXX_BITSIZE_INT_N_0, |
| 1570 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_0), __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_0)) |
| 1571 | #endif |
| 1572 | #ifdef __GLIBCXX_TYPE_INT_N_1 |
| 1573 | __INT_N (__GLIBCXX_TYPE_INT_N_1, __GLIBCXX_BITSIZE_INT_N_1, |
| 1574 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_1), __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_1)) |
| 1575 | #endif |
| 1576 | #ifdef __GLIBCXX_TYPE_INT_N_2 |
| 1577 | __INT_N (__GLIBCXX_TYPE_INT_N_2, __GLIBCXX_BITSIZE_INT_N_2, |
| 1578 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_2), __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_2)) |
| 1579 | #endif |
| 1580 | #ifdef __GLIBCXX_TYPE_INT_N_3 |
| 1581 | __INT_N (__GLIBCXX_TYPE_INT_N_3, __GLIBCXX_BITSIZE_INT_N_3, |
| 1582 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_3), __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_3)) |
| 1583 | #endif |
| 1584 | |
| 1585 | #undef __INT_N |
| 1586 | #undef __INT_N_201103 |
| 1587 | #undef __INT_N_U201103 |
| 1588 | |
| 1589 | #endif |
| 1590 | |
| 1591 | /// numeric_limits<float> specialization. |
| 1592 | template<> |
| 1593 | struct numeric_limits<float> |
| 1594 | { |
| 1595 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1596 | |
| 1597 | static _GLIBCXX_CONSTEXPR float |
| 1598 | min() _GLIBCXX_USE_NOEXCEPT { return __FLT_MIN__; } |
| 1599 | |
| 1600 | static _GLIBCXX_CONSTEXPR float |
| 1601 | max() _GLIBCXX_USE_NOEXCEPT { return __FLT_MAX__; } |
| 1602 | |
| 1603 | #if __cplusplus >= 201103L |
| 1604 | static constexpr float |
| 1605 | lowest() noexcept { return -__FLT_MAX__; } |
| 1606 | #endif |
| 1607 | |
| 1608 | static _GLIBCXX_USE_CONSTEXPR int digits = __FLT_MANT_DIG__; |
| 1609 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __FLT_DIG__; |
| 1610 | #if __cplusplus >= 201103L |
| 1611 | static constexpr int max_digits10 |
| 1612 | = __glibcxx_max_digits10 (__FLT_MANT_DIG__); |
| 1613 | #endif |
| 1614 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 1615 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
| 1616 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
| 1617 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
| 1618 | |
| 1619 | static _GLIBCXX_CONSTEXPR float |
| 1620 | epsilon() _GLIBCXX_USE_NOEXCEPT { return __FLT_EPSILON__; } |
| 1621 | |
| 1622 | static _GLIBCXX_CONSTEXPR float |
| 1623 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5F; } |
| 1624 | |
| 1625 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __FLT_MIN_EXP__; |
| 1626 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __FLT_MIN_10_EXP__; |
| 1627 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __FLT_MAX_EXP__; |
| 1628 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __FLT_MAX_10_EXP__; |
| 1629 | |
| 1630 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = __FLT_HAS_INFINITY__; |
| 1631 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = __FLT_HAS_QUIET_NAN__; |
| 1632 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
| 1633 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1634 | = bool(__FLT_HAS_DENORM__) ? denorm_present : denorm_absent; |
| 1635 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss |
| 1636 | = __glibcxx_float_has_denorm_loss; |
| 1637 | |
| 1638 | static _GLIBCXX_CONSTEXPR float |
| 1639 | infinity() _GLIBCXX_USE_NOEXCEPT { return __builtin_huge_valf(); } |
| 1640 | |
| 1641 | static _GLIBCXX_CONSTEXPR float |
| 1642 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nanf(""); } |
| 1643 | |
| 1644 | static _GLIBCXX_CONSTEXPR float |
| 1645 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nansf(""); } |
| 1646 | |
| 1647 | static _GLIBCXX_CONSTEXPR float |
| 1648 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return __FLT_DENORM_MIN__; } |
| 1649 | |
| 1650 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
| 1651 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
| 1652 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1653 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 1654 | |
| 1655 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_float_traps; |
| 1656 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before |
| 1657 | = __glibcxx_float_tinyness_before; |
| 1658 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1659 | = round_to_nearest; |
| 1660 | }; |
| 1661 | |
| 1662 | #undef __glibcxx_float_has_denorm_loss |
| 1663 | #undef __glibcxx_float_traps |
| 1664 | #undef __glibcxx_float_tinyness_before |
| 1665 | |
| 1666 | /// numeric_limits<double> specialization. |
| 1667 | template<> |
| 1668 | struct numeric_limits<double> |
| 1669 | { |
| 1670 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1671 | |
| 1672 | static _GLIBCXX_CONSTEXPR double |
| 1673 | min() _GLIBCXX_USE_NOEXCEPT { return __DBL_MIN__; } |
| 1674 | |
| 1675 | static _GLIBCXX_CONSTEXPR double |
| 1676 | max() _GLIBCXX_USE_NOEXCEPT { return __DBL_MAX__; } |
| 1677 | |
| 1678 | #if __cplusplus >= 201103L |
| 1679 | static constexpr double |
| 1680 | lowest() noexcept { return -__DBL_MAX__; } |
| 1681 | #endif |
| 1682 | |
| 1683 | static _GLIBCXX_USE_CONSTEXPR int digits = __DBL_MANT_DIG__; |
| 1684 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __DBL_DIG__; |
| 1685 | #if __cplusplus >= 201103L |
| 1686 | static constexpr int max_digits10 |
| 1687 | = __glibcxx_max_digits10 (__DBL_MANT_DIG__); |
| 1688 | #endif |
| 1689 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 1690 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
| 1691 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
| 1692 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
| 1693 | |
| 1694 | static _GLIBCXX_CONSTEXPR double |
| 1695 | epsilon() _GLIBCXX_USE_NOEXCEPT { return __DBL_EPSILON__; } |
| 1696 | |
| 1697 | static _GLIBCXX_CONSTEXPR double |
| 1698 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5; } |
| 1699 | |
| 1700 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __DBL_MIN_EXP__; |
| 1701 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __DBL_MIN_10_EXP__; |
| 1702 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __DBL_MAX_EXP__; |
| 1703 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __DBL_MAX_10_EXP__; |
| 1704 | |
| 1705 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = __DBL_HAS_INFINITY__; |
| 1706 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = __DBL_HAS_QUIET_NAN__; |
| 1707 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
| 1708 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1709 | = bool(__DBL_HAS_DENORM__) ? denorm_present : denorm_absent; |
| 1710 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss |
| 1711 | = __glibcxx_double_has_denorm_loss; |
| 1712 | |
| 1713 | static _GLIBCXX_CONSTEXPR double |
| 1714 | infinity() _GLIBCXX_USE_NOEXCEPT { return __builtin_huge_val(); } |
| 1715 | |
| 1716 | static _GLIBCXX_CONSTEXPR double |
| 1717 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nan(""); } |
| 1718 | |
| 1719 | static _GLIBCXX_CONSTEXPR double |
| 1720 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nans(""); } |
| 1721 | |
| 1722 | static _GLIBCXX_CONSTEXPR double |
| 1723 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return __DBL_DENORM_MIN__; } |
| 1724 | |
| 1725 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
| 1726 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
| 1727 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1728 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 1729 | |
| 1730 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_double_traps; |
| 1731 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before |
| 1732 | = __glibcxx_double_tinyness_before; |
| 1733 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
| 1734 | = round_to_nearest; |
| 1735 | }; |
| 1736 | |
| 1737 | #undef __glibcxx_double_has_denorm_loss |
| 1738 | #undef __glibcxx_double_traps |
| 1739 | #undef __glibcxx_double_tinyness_before |
| 1740 | |
| 1741 | /// numeric_limits<long double> specialization. |
| 1742 | template<> |
| 1743 | struct numeric_limits<long double> |
| 1744 | { |
| 1745 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
| 1746 | |
| 1747 | static _GLIBCXX_CONSTEXPR long double |
| 1748 | min() _GLIBCXX_USE_NOEXCEPT { return __LDBL_MIN__; } |
| 1749 | |
| 1750 | static _GLIBCXX_CONSTEXPR long double |
| 1751 | max() _GLIBCXX_USE_NOEXCEPT { return __LDBL_MAX__; } |
| 1752 | |
| 1753 | #if __cplusplus >= 201103L |
| 1754 | static constexpr long double |
| 1755 | lowest() noexcept { return -__LDBL_MAX__; } |
| 1756 | #endif |
| 1757 | |
| 1758 | static _GLIBCXX_USE_CONSTEXPR int digits = __LDBL_MANT_DIG__; |
| 1759 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __LDBL_DIG__; |
| 1760 | #if __cplusplus >= 201103L |
| 1761 | static _GLIBCXX_USE_CONSTEXPR int max_digits10 |
| 1762 | = __glibcxx_max_digits10 (__LDBL_MANT_DIG__); |
| 1763 | #endif |
| 1764 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
| 1765 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
| 1766 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
| 1767 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
| 1768 | |
| 1769 | static _GLIBCXX_CONSTEXPR long double |
| 1770 | epsilon() _GLIBCXX_USE_NOEXCEPT { return __LDBL_EPSILON__; } |
| 1771 | |
| 1772 | static _GLIBCXX_CONSTEXPR long double |
| 1773 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5L; } |
| 1774 | |
| 1775 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __LDBL_MIN_EXP__; |
| 1776 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __LDBL_MIN_10_EXP__; |
| 1777 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __LDBL_MAX_EXP__; |
| 1778 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __LDBL_MAX_10_EXP__; |
| 1779 | |
| 1780 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = __LDBL_HAS_INFINITY__; |
| 1781 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = __LDBL_HAS_QUIET_NAN__; |
| 1782 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
| 1783 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
| 1784 | = bool(__LDBL_HAS_DENORM__) ? denorm_present : denorm_absent; |
| 1785 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss |
| 1786 | = __glibcxx_long_double_has_denorm_loss; |
| 1787 | |
| 1788 | static _GLIBCXX_CONSTEXPR long double |
| 1789 | infinity() _GLIBCXX_USE_NOEXCEPT { return __builtin_huge_vall(); } |
| 1790 | |
| 1791 | static _GLIBCXX_CONSTEXPR long double |
| 1792 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nanl(""); } |
| 1793 | |
| 1794 | static _GLIBCXX_CONSTEXPR long double |
| 1795 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nansl(""); } |
| 1796 | |
| 1797 | static _GLIBCXX_CONSTEXPR long double |
| 1798 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return __LDBL_DENORM_MIN__; } |
| 1799 | |
| 1800 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
| 1801 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
| 1802 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
| 1803 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
| 1804 | |
| 1805 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_long_double_traps; |
| 1806 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = |
| 1807 | __glibcxx_long_double_tinyness_before; |
| 1808 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style = |
| 1809 | round_to_nearest; |
| 1810 | }; |
| 1811 | |
| 1812 | #undef __glibcxx_long_double_has_denorm_loss |
| 1813 | #undef __glibcxx_long_double_traps |
| 1814 | #undef __glibcxx_long_double_tinyness_before |
| 1815 | |
| 1816 | _GLIBCXX_END_NAMESPACE_VERSION |
| 1817 | } // namespace |
| 1818 | |
| 1819 | #undef __glibcxx_signed |
| 1820 | #undef __glibcxx_min |
| 1821 | #undef __glibcxx_max |
| 1822 | #undef __glibcxx_digits |
| 1823 | #undef __glibcxx_digits10 |
| 1824 | #undef __glibcxx_max_digits10 |
| 1825 | |
| 1826 | #endif // _GLIBCXX_NUMERIC_LIMITS |
| 1827 |
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