1 | // The template and inlines for the numeric_limits classes. -*- C++ -*- |
2 | |
3 | // Copyright (C) 1999-2024 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 | template<typename _Tp> |
312 | struct numeric_limits : public __numeric_limits_base |
313 | { |
314 | /** The minimum finite value, or for floating types with |
315 | denormalization, the minimum positive normalized value. */ |
316 | static _GLIBCXX_CONSTEXPR _Tp |
317 | min() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
318 | |
319 | /** The maximum finite value. */ |
320 | static _GLIBCXX_CONSTEXPR _Tp |
321 | max() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
322 | |
323 | #if __cplusplus >= 201103L |
324 | /** A finite value x such that there is no other finite value y |
325 | * where y < x. */ |
326 | static constexpr _Tp |
327 | lowest() noexcept { return _Tp(); } |
328 | #endif |
329 | |
330 | /** The @e machine @e epsilon: the difference between 1 and the least |
331 | value greater than 1 that is representable. */ |
332 | static _GLIBCXX_CONSTEXPR _Tp |
333 | epsilon() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
334 | |
335 | /** The maximum rounding error measurement (see LIA-1). */ |
336 | static _GLIBCXX_CONSTEXPR _Tp |
337 | round_error() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
338 | |
339 | /** The representation of positive infinity, if @c has_infinity. */ |
340 | static _GLIBCXX_CONSTEXPR _Tp |
341 | infinity() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
342 | |
343 | /** The representation of a quiet Not a Number, |
344 | if @c has_quiet_NaN. */ |
345 | static _GLIBCXX_CONSTEXPR _Tp |
346 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
347 | |
348 | /** The representation of a signaling Not a Number, if |
349 | @c has_signaling_NaN. */ |
350 | static _GLIBCXX_CONSTEXPR _Tp |
351 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
352 | |
353 | /** The minimum positive denormalized value. For types where |
354 | @c has_denorm is false, this is the minimum positive normalized |
355 | value. */ |
356 | static _GLIBCXX_CONSTEXPR _Tp |
357 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return _Tp(); } |
358 | }; |
359 | |
360 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
361 | // 559. numeric_limits<const T> |
362 | |
363 | template<typename _Tp> |
364 | struct numeric_limits<const _Tp> |
365 | : public numeric_limits<_Tp> { }; |
366 | |
367 | template<typename _Tp> |
368 | struct numeric_limits<volatile _Tp> |
369 | : public numeric_limits<_Tp> { }; |
370 | |
371 | template<typename _Tp> |
372 | struct numeric_limits<const volatile _Tp> |
373 | : public numeric_limits<_Tp> { }; |
374 | |
375 | // Now there follow 16 explicit specializations. Yes, 16. Make sure |
376 | // you get the count right. (18 in C++11 mode, with char16_t and char32_t.) |
377 | // (+1 if char8_t is enabled.) |
378 | |
379 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
380 | // 184. numeric_limits<bool> wording problems |
381 | |
382 | /// numeric_limits<bool> specialization. |
383 | template<> |
384 | struct numeric_limits<bool> |
385 | { |
386 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
387 | |
388 | static _GLIBCXX_CONSTEXPR bool |
389 | min() _GLIBCXX_USE_NOEXCEPT { return false; } |
390 | |
391 | static _GLIBCXX_CONSTEXPR bool |
392 | max() _GLIBCXX_USE_NOEXCEPT { return true; } |
393 | |
394 | #if __cplusplus >= 201103L |
395 | static constexpr bool |
396 | lowest() noexcept { return min(); } |
397 | #endif |
398 | static _GLIBCXX_USE_CONSTEXPR int digits = 1; |
399 | static _GLIBCXX_USE_CONSTEXPR int digits10 = 0; |
400 | #if __cplusplus >= 201103L |
401 | static constexpr int max_digits10 = 0; |
402 | #endif |
403 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
404 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
405 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
406 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
407 | |
408 | static _GLIBCXX_CONSTEXPR bool |
409 | epsilon() _GLIBCXX_USE_NOEXCEPT { return false; } |
410 | |
411 | static _GLIBCXX_CONSTEXPR bool |
412 | round_error() _GLIBCXX_USE_NOEXCEPT { return false; } |
413 | |
414 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
415 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
416 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
417 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
418 | |
419 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
420 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
421 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
422 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
423 | = denorm_absent; |
424 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
425 | |
426 | static _GLIBCXX_CONSTEXPR bool |
427 | infinity() _GLIBCXX_USE_NOEXCEPT { return false; } |
428 | |
429 | static _GLIBCXX_CONSTEXPR bool |
430 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return false; } |
431 | |
432 | static _GLIBCXX_CONSTEXPR bool |
433 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return false; } |
434 | |
435 | static _GLIBCXX_CONSTEXPR bool |
436 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return false; } |
437 | |
438 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
439 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
440 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
441 | |
442 | // It is not clear what it means for a boolean type to trap. |
443 | // This is a DR on the LWG issue list. Here, I use integer |
444 | // promotion semantics. |
445 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
446 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
447 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
448 | = round_toward_zero; |
449 | }; |
450 | |
451 | /// numeric_limits<char> specialization. |
452 | template<> |
453 | struct numeric_limits<char> |
454 | { |
455 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
456 | |
457 | static _GLIBCXX_CONSTEXPR char |
458 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min(char); } |
459 | |
460 | static _GLIBCXX_CONSTEXPR char |
461 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max(char); } |
462 | |
463 | #if __cplusplus >= 201103L |
464 | static constexpr char |
465 | lowest() noexcept { return min(); } |
466 | #endif |
467 | |
468 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (char); |
469 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (char); |
470 | #if __cplusplus >= 201103L |
471 | static constexpr int max_digits10 = 0; |
472 | #endif |
473 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = __glibcxx_signed (char); |
474 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
475 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
476 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
477 | |
478 | static _GLIBCXX_CONSTEXPR char |
479 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
480 | |
481 | static _GLIBCXX_CONSTEXPR char |
482 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
483 | |
484 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
485 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
486 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
487 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
488 | |
489 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
490 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
491 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
492 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
493 | = denorm_absent; |
494 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
495 | |
496 | static _GLIBCXX_CONSTEXPR |
497 | char infinity() _GLIBCXX_USE_NOEXCEPT { return char(); } |
498 | |
499 | static _GLIBCXX_CONSTEXPR char |
500 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return char(); } |
501 | |
502 | static _GLIBCXX_CONSTEXPR char |
503 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return char(); } |
504 | |
505 | static _GLIBCXX_CONSTEXPR char |
506 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<char>(0); } |
507 | |
508 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
509 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
510 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = !is_signed; |
511 | |
512 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
513 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
514 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
515 | = round_toward_zero; |
516 | }; |
517 | |
518 | /// numeric_limits<signed char> specialization. |
519 | template<> |
520 | struct numeric_limits<signed char> |
521 | { |
522 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
523 | |
524 | static _GLIBCXX_CONSTEXPR signed char |
525 | min() _GLIBCXX_USE_NOEXCEPT { return -__SCHAR_MAX__ - 1; } |
526 | |
527 | static _GLIBCXX_CONSTEXPR signed char |
528 | max() _GLIBCXX_USE_NOEXCEPT { return __SCHAR_MAX__; } |
529 | |
530 | #if __cplusplus >= 201103L |
531 | static constexpr signed char |
532 | lowest() noexcept { return min(); } |
533 | #endif |
534 | |
535 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (signed char); |
536 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
537 | = __glibcxx_digits10 (signed char); |
538 | #if __cplusplus >= 201103L |
539 | static constexpr int max_digits10 = 0; |
540 | #endif |
541 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
542 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
543 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
544 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
545 | |
546 | static _GLIBCXX_CONSTEXPR signed char |
547 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
548 | |
549 | static _GLIBCXX_CONSTEXPR signed char |
550 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
551 | |
552 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
553 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
554 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
555 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
556 | |
557 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
558 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
559 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
560 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
561 | = denorm_absent; |
562 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
563 | |
564 | static _GLIBCXX_CONSTEXPR signed char |
565 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<signed char>(0); } |
566 | |
567 | static _GLIBCXX_CONSTEXPR signed char |
568 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<signed char>(0); } |
569 | |
570 | static _GLIBCXX_CONSTEXPR signed char |
571 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
572 | { return static_cast<signed char>(0); } |
573 | |
574 | static _GLIBCXX_CONSTEXPR signed char |
575 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
576 | { return static_cast<signed char>(0); } |
577 | |
578 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
579 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
580 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
581 | |
582 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
583 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
584 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
585 | = round_toward_zero; |
586 | }; |
587 | |
588 | /// numeric_limits<unsigned char> specialization. |
589 | template<> |
590 | struct numeric_limits<unsigned char> |
591 | { |
592 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
593 | |
594 | static _GLIBCXX_CONSTEXPR unsigned char |
595 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
596 | |
597 | static _GLIBCXX_CONSTEXPR unsigned char |
598 | max() _GLIBCXX_USE_NOEXCEPT { return __SCHAR_MAX__ * 2U + 1; } |
599 | |
600 | #if __cplusplus >= 201103L |
601 | static constexpr unsigned char |
602 | lowest() noexcept { return min(); } |
603 | #endif |
604 | |
605 | static _GLIBCXX_USE_CONSTEXPR int digits |
606 | = __glibcxx_digits (unsigned char); |
607 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
608 | = __glibcxx_digits10 (unsigned char); |
609 | #if __cplusplus >= 201103L |
610 | static constexpr int max_digits10 = 0; |
611 | #endif |
612 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
613 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
614 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
615 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
616 | |
617 | static _GLIBCXX_CONSTEXPR unsigned char |
618 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
619 | |
620 | static _GLIBCXX_CONSTEXPR unsigned char |
621 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
622 | |
623 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
624 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
625 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
626 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
627 | |
628 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
629 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
630 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
631 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
632 | = denorm_absent; |
633 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
634 | |
635 | static _GLIBCXX_CONSTEXPR unsigned char |
636 | infinity() _GLIBCXX_USE_NOEXCEPT |
637 | { return static_cast<unsigned char>(0); } |
638 | |
639 | static _GLIBCXX_CONSTEXPR unsigned char |
640 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
641 | { return static_cast<unsigned char>(0); } |
642 | |
643 | static _GLIBCXX_CONSTEXPR unsigned char |
644 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
645 | { return static_cast<unsigned char>(0); } |
646 | |
647 | static _GLIBCXX_CONSTEXPR unsigned char |
648 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
649 | { return static_cast<unsigned char>(0); } |
650 | |
651 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
652 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
653 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
654 | |
655 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
656 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
657 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
658 | = round_toward_zero; |
659 | }; |
660 | |
661 | /// numeric_limits<wchar_t> specialization. |
662 | template<> |
663 | struct numeric_limits<wchar_t> |
664 | { |
665 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
666 | |
667 | static _GLIBCXX_CONSTEXPR wchar_t |
668 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min (wchar_t); } |
669 | |
670 | static _GLIBCXX_CONSTEXPR wchar_t |
671 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max (wchar_t); } |
672 | |
673 | #if __cplusplus >= 201103L |
674 | static constexpr wchar_t |
675 | lowest() noexcept { return min(); } |
676 | #endif |
677 | |
678 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (wchar_t); |
679 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
680 | = __glibcxx_digits10 (wchar_t); |
681 | #if __cplusplus >= 201103L |
682 | static constexpr int max_digits10 = 0; |
683 | #endif |
684 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = __glibcxx_signed (wchar_t); |
685 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
686 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
687 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
688 | |
689 | static _GLIBCXX_CONSTEXPR wchar_t |
690 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
691 | |
692 | static _GLIBCXX_CONSTEXPR wchar_t |
693 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
694 | |
695 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
696 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
697 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
698 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
699 | |
700 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
701 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
702 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
703 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
704 | = denorm_absent; |
705 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
706 | |
707 | static _GLIBCXX_CONSTEXPR wchar_t |
708 | infinity() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
709 | |
710 | static _GLIBCXX_CONSTEXPR wchar_t |
711 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
712 | |
713 | static _GLIBCXX_CONSTEXPR wchar_t |
714 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
715 | |
716 | static _GLIBCXX_CONSTEXPR wchar_t |
717 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return wchar_t(); } |
718 | |
719 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
720 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
721 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = !is_signed; |
722 | |
723 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
724 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
725 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
726 | = round_toward_zero; |
727 | }; |
728 | |
729 | #if _GLIBCXX_USE_CHAR8_T |
730 | /// numeric_limits<char8_t> specialization. |
731 | template<> |
732 | struct numeric_limits<char8_t> |
733 | { |
734 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
735 | |
736 | static _GLIBCXX_CONSTEXPR char8_t |
737 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min (char8_t); } |
738 | |
739 | static _GLIBCXX_CONSTEXPR char8_t |
740 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max (char8_t); } |
741 | |
742 | static _GLIBCXX_CONSTEXPR char8_t |
743 | lowest() _GLIBCXX_USE_NOEXCEPT { return min(); } |
744 | |
745 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (char8_t); |
746 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (char8_t); |
747 | static _GLIBCXX_USE_CONSTEXPR int max_digits10 = 0; |
748 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = __glibcxx_signed (char8_t); |
749 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
750 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
751 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
752 | |
753 | static _GLIBCXX_CONSTEXPR char8_t |
754 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
755 | |
756 | static _GLIBCXX_CONSTEXPR char8_t |
757 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
758 | |
759 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
760 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
761 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
762 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
763 | |
764 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
765 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
766 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
767 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
768 | = denorm_absent; |
769 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
770 | |
771 | static _GLIBCXX_CONSTEXPR char8_t |
772 | infinity() _GLIBCXX_USE_NOEXCEPT { return char8_t(); } |
773 | |
774 | static _GLIBCXX_CONSTEXPR char8_t |
775 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return char8_t(); } |
776 | |
777 | static _GLIBCXX_CONSTEXPR char8_t |
778 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return char8_t(); } |
779 | |
780 | static _GLIBCXX_CONSTEXPR char8_t |
781 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return char8_t(); } |
782 | |
783 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
784 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
785 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = !is_signed; |
786 | |
787 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
788 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
789 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
790 | = round_toward_zero; |
791 | }; |
792 | #endif |
793 | |
794 | #if __cplusplus >= 201103L |
795 | /// numeric_limits<char16_t> specialization. |
796 | template<> |
797 | struct numeric_limits<char16_t> |
798 | { |
799 | static constexpr bool is_specialized = true; |
800 | |
801 | static constexpr char16_t |
802 | min() noexcept { return __glibcxx_min (char16_t); } |
803 | |
804 | static constexpr char16_t |
805 | max() noexcept { return __glibcxx_max (char16_t); } |
806 | |
807 | static constexpr char16_t |
808 | lowest() noexcept { return min(); } |
809 | |
810 | static constexpr int digits = __glibcxx_digits (char16_t); |
811 | static constexpr int digits10 = __glibcxx_digits10 (char16_t); |
812 | static constexpr int max_digits10 = 0; |
813 | static constexpr bool is_signed = __glibcxx_signed (char16_t); |
814 | static constexpr bool is_integer = true; |
815 | static constexpr bool is_exact = true; |
816 | static constexpr int radix = 2; |
817 | |
818 | static constexpr char16_t |
819 | epsilon() noexcept { return 0; } |
820 | |
821 | static constexpr char16_t |
822 | round_error() noexcept { return 0; } |
823 | |
824 | static constexpr int min_exponent = 0; |
825 | static constexpr int min_exponent10 = 0; |
826 | static constexpr int max_exponent = 0; |
827 | static constexpr int max_exponent10 = 0; |
828 | |
829 | static constexpr bool has_infinity = false; |
830 | static constexpr bool has_quiet_NaN = false; |
831 | static constexpr bool has_signaling_NaN = false; |
832 | static constexpr float_denorm_style has_denorm = denorm_absent; |
833 | static constexpr bool has_denorm_loss = false; |
834 | |
835 | static constexpr char16_t |
836 | infinity() noexcept { return char16_t(); } |
837 | |
838 | static constexpr char16_t |
839 | quiet_NaN() noexcept { return char16_t(); } |
840 | |
841 | static constexpr char16_t |
842 | signaling_NaN() noexcept { return char16_t(); } |
843 | |
844 | static constexpr char16_t |
845 | denorm_min() noexcept { return char16_t(); } |
846 | |
847 | static constexpr bool is_iec559 = false; |
848 | static constexpr bool is_bounded = true; |
849 | static constexpr bool is_modulo = !is_signed; |
850 | |
851 | static constexpr bool traps = __glibcxx_integral_traps; |
852 | static constexpr bool tinyness_before = false; |
853 | static constexpr float_round_style round_style = round_toward_zero; |
854 | }; |
855 | |
856 | /// numeric_limits<char32_t> specialization. |
857 | template<> |
858 | struct numeric_limits<char32_t> |
859 | { |
860 | static constexpr bool is_specialized = true; |
861 | |
862 | static constexpr char32_t |
863 | min() noexcept { return __glibcxx_min (char32_t); } |
864 | |
865 | static constexpr char32_t |
866 | max() noexcept { return __glibcxx_max (char32_t); } |
867 | |
868 | static constexpr char32_t |
869 | lowest() noexcept { return min(); } |
870 | |
871 | static constexpr int digits = __glibcxx_digits (char32_t); |
872 | static constexpr int digits10 = __glibcxx_digits10 (char32_t); |
873 | static constexpr int max_digits10 = 0; |
874 | static constexpr bool is_signed = __glibcxx_signed (char32_t); |
875 | static constexpr bool is_integer = true; |
876 | static constexpr bool is_exact = true; |
877 | static constexpr int radix = 2; |
878 | |
879 | static constexpr char32_t |
880 | epsilon() noexcept { return 0; } |
881 | |
882 | static constexpr char32_t |
883 | round_error() noexcept { return 0; } |
884 | |
885 | static constexpr int min_exponent = 0; |
886 | static constexpr int min_exponent10 = 0; |
887 | static constexpr int max_exponent = 0; |
888 | static constexpr int max_exponent10 = 0; |
889 | |
890 | static constexpr bool has_infinity = false; |
891 | static constexpr bool has_quiet_NaN = false; |
892 | static constexpr bool has_signaling_NaN = false; |
893 | static constexpr float_denorm_style has_denorm = denorm_absent; |
894 | static constexpr bool has_denorm_loss = false; |
895 | |
896 | static constexpr char32_t |
897 | infinity() noexcept { return char32_t(); } |
898 | |
899 | static constexpr char32_t |
900 | quiet_NaN() noexcept { return char32_t(); } |
901 | |
902 | static constexpr char32_t |
903 | signaling_NaN() noexcept { return char32_t(); } |
904 | |
905 | static constexpr char32_t |
906 | denorm_min() noexcept { return char32_t(); } |
907 | |
908 | static constexpr bool is_iec559 = false; |
909 | static constexpr bool is_bounded = true; |
910 | static constexpr bool is_modulo = !is_signed; |
911 | |
912 | static constexpr bool traps = __glibcxx_integral_traps; |
913 | static constexpr bool tinyness_before = false; |
914 | static constexpr float_round_style round_style = round_toward_zero; |
915 | }; |
916 | #endif |
917 | |
918 | /// numeric_limits<short> specialization. |
919 | template<> |
920 | struct numeric_limits<short> |
921 | { |
922 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
923 | |
924 | static _GLIBCXX_CONSTEXPR short |
925 | min() _GLIBCXX_USE_NOEXCEPT { return -__SHRT_MAX__ - 1; } |
926 | |
927 | static _GLIBCXX_CONSTEXPR short |
928 | max() _GLIBCXX_USE_NOEXCEPT { return __SHRT_MAX__; } |
929 | |
930 | #if __cplusplus >= 201103L |
931 | static constexpr short |
932 | lowest() noexcept { return min(); } |
933 | #endif |
934 | |
935 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (short); |
936 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (short); |
937 | #if __cplusplus >= 201103L |
938 | static constexpr int max_digits10 = 0; |
939 | #endif |
940 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
941 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
942 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
943 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
944 | |
945 | static _GLIBCXX_CONSTEXPR short |
946 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
947 | |
948 | static _GLIBCXX_CONSTEXPR short |
949 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
950 | |
951 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
952 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
953 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
954 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
955 | |
956 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
957 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
958 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
959 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
960 | = denorm_absent; |
961 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
962 | |
963 | static _GLIBCXX_CONSTEXPR short |
964 | infinity() _GLIBCXX_USE_NOEXCEPT { return short(); } |
965 | |
966 | static _GLIBCXX_CONSTEXPR short |
967 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return short(); } |
968 | |
969 | static _GLIBCXX_CONSTEXPR short |
970 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return short(); } |
971 | |
972 | static _GLIBCXX_CONSTEXPR short |
973 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return short(); } |
974 | |
975 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
976 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
977 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
978 | |
979 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
980 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
981 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
982 | = round_toward_zero; |
983 | }; |
984 | |
985 | /// numeric_limits<unsigned short> specialization. |
986 | template<> |
987 | struct numeric_limits<unsigned short> |
988 | { |
989 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
990 | |
991 | static _GLIBCXX_CONSTEXPR unsigned short |
992 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
993 | |
994 | static _GLIBCXX_CONSTEXPR unsigned short |
995 | max() _GLIBCXX_USE_NOEXCEPT { return __SHRT_MAX__ * 2U + 1; } |
996 | |
997 | #if __cplusplus >= 201103L |
998 | static constexpr unsigned short |
999 | lowest() noexcept { return min(); } |
1000 | #endif |
1001 | |
1002 | static _GLIBCXX_USE_CONSTEXPR int digits |
1003 | = __glibcxx_digits (unsigned short); |
1004 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
1005 | = __glibcxx_digits10 (unsigned short); |
1006 | #if __cplusplus >= 201103L |
1007 | static constexpr int max_digits10 = 0; |
1008 | #endif |
1009 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
1010 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1011 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1012 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1013 | |
1014 | static _GLIBCXX_CONSTEXPR unsigned short |
1015 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1016 | |
1017 | static _GLIBCXX_CONSTEXPR unsigned short |
1018 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1019 | |
1020 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1021 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1022 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1023 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1024 | |
1025 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1026 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1027 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1028 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1029 | = denorm_absent; |
1030 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1031 | |
1032 | static _GLIBCXX_CONSTEXPR unsigned short |
1033 | infinity() _GLIBCXX_USE_NOEXCEPT |
1034 | { return static_cast<unsigned short>(0); } |
1035 | |
1036 | static _GLIBCXX_CONSTEXPR unsigned short |
1037 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
1038 | { return static_cast<unsigned short>(0); } |
1039 | |
1040 | static _GLIBCXX_CONSTEXPR unsigned short |
1041 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
1042 | { return static_cast<unsigned short>(0); } |
1043 | |
1044 | static _GLIBCXX_CONSTEXPR unsigned short |
1045 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
1046 | { return static_cast<unsigned short>(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 = true; |
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<int> specialization. |
1059 | template<> |
1060 | struct numeric_limits<int> |
1061 | { |
1062 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1063 | |
1064 | static _GLIBCXX_CONSTEXPR int |
1065 | min() _GLIBCXX_USE_NOEXCEPT { return -__INT_MAX__ - 1; } |
1066 | |
1067 | static _GLIBCXX_CONSTEXPR int |
1068 | max() _GLIBCXX_USE_NOEXCEPT { return __INT_MAX__; } |
1069 | |
1070 | #if __cplusplus >= 201103L |
1071 | static constexpr int |
1072 | lowest() noexcept { return min(); } |
1073 | #endif |
1074 | |
1075 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (int); |
1076 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (int); |
1077 | #if __cplusplus >= 201103L |
1078 | static constexpr int max_digits10 = 0; |
1079 | #endif |
1080 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
1081 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1082 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1083 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1084 | |
1085 | static _GLIBCXX_CONSTEXPR int |
1086 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1087 | |
1088 | static _GLIBCXX_CONSTEXPR int |
1089 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1090 | |
1091 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1092 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1093 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1094 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1095 | |
1096 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1097 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1098 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1099 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1100 | = denorm_absent; |
1101 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1102 | |
1103 | static _GLIBCXX_CONSTEXPR int |
1104 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
1105 | |
1106 | static _GLIBCXX_CONSTEXPR int |
1107 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
1108 | |
1109 | static _GLIBCXX_CONSTEXPR int |
1110 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
1111 | |
1112 | static _GLIBCXX_CONSTEXPR int |
1113 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<int>(0); } |
1114 | |
1115 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
1116 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1117 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
1118 | |
1119 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
1120 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
1121 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1122 | = round_toward_zero; |
1123 | }; |
1124 | |
1125 | /// numeric_limits<unsigned int> specialization. |
1126 | template<> |
1127 | struct numeric_limits<unsigned int> |
1128 | { |
1129 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1130 | |
1131 | static _GLIBCXX_CONSTEXPR unsigned int |
1132 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1133 | |
1134 | static _GLIBCXX_CONSTEXPR unsigned int |
1135 | max() _GLIBCXX_USE_NOEXCEPT { return __INT_MAX__ * 2U + 1; } |
1136 | |
1137 | #if __cplusplus >= 201103L |
1138 | static constexpr unsigned int |
1139 | lowest() noexcept { return min(); } |
1140 | #endif |
1141 | |
1142 | static _GLIBCXX_USE_CONSTEXPR int digits |
1143 | = __glibcxx_digits (unsigned int); |
1144 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
1145 | = __glibcxx_digits10 (unsigned int); |
1146 | #if __cplusplus >= 201103L |
1147 | static constexpr int max_digits10 = 0; |
1148 | #endif |
1149 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
1150 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1151 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1152 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1153 | |
1154 | static _GLIBCXX_CONSTEXPR unsigned int |
1155 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1156 | |
1157 | static _GLIBCXX_CONSTEXPR unsigned int |
1158 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1159 | |
1160 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1161 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1162 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1163 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1164 | |
1165 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1166 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1167 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1168 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1169 | = denorm_absent; |
1170 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1171 | |
1172 | static _GLIBCXX_CONSTEXPR unsigned int |
1173 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<unsigned int>(0); } |
1174 | |
1175 | static _GLIBCXX_CONSTEXPR unsigned int |
1176 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
1177 | { return static_cast<unsigned int>(0); } |
1178 | |
1179 | static _GLIBCXX_CONSTEXPR unsigned int |
1180 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
1181 | { return static_cast<unsigned int>(0); } |
1182 | |
1183 | static _GLIBCXX_CONSTEXPR unsigned int |
1184 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
1185 | { return static_cast<unsigned int>(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 = true; |
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<long> specialization. |
1198 | template<> |
1199 | struct numeric_limits<long> |
1200 | { |
1201 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1202 | |
1203 | static _GLIBCXX_CONSTEXPR long |
1204 | min() _GLIBCXX_USE_NOEXCEPT { return -__LONG_MAX__ - 1; } |
1205 | |
1206 | static _GLIBCXX_CONSTEXPR long |
1207 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_MAX__; } |
1208 | |
1209 | #if __cplusplus >= 201103L |
1210 | static constexpr long |
1211 | lowest() noexcept { return min(); } |
1212 | #endif |
1213 | |
1214 | static _GLIBCXX_USE_CONSTEXPR int digits = __glibcxx_digits (long); |
1215 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __glibcxx_digits10 (long); |
1216 | #if __cplusplus >= 201103L |
1217 | static constexpr int max_digits10 = 0; |
1218 | #endif |
1219 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
1220 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1221 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1222 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1223 | |
1224 | static _GLIBCXX_CONSTEXPR long |
1225 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1226 | |
1227 | static _GLIBCXX_CONSTEXPR long |
1228 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1229 | |
1230 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1231 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1232 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1233 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1234 | |
1235 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1236 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1237 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1238 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1239 | = denorm_absent; |
1240 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1241 | |
1242 | static _GLIBCXX_CONSTEXPR long |
1243 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
1244 | |
1245 | static _GLIBCXX_CONSTEXPR long |
1246 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
1247 | |
1248 | static _GLIBCXX_CONSTEXPR long |
1249 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
1250 | |
1251 | static _GLIBCXX_CONSTEXPR long |
1252 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<long>(0); } |
1253 | |
1254 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
1255 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1256 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
1257 | |
1258 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
1259 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
1260 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1261 | = round_toward_zero; |
1262 | }; |
1263 | |
1264 | /// numeric_limits<unsigned long> specialization. |
1265 | template<> |
1266 | struct numeric_limits<unsigned long> |
1267 | { |
1268 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1269 | |
1270 | static _GLIBCXX_CONSTEXPR unsigned long |
1271 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1272 | |
1273 | static _GLIBCXX_CONSTEXPR unsigned long |
1274 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_MAX__ * 2UL + 1; } |
1275 | |
1276 | #if __cplusplus >= 201103L |
1277 | static constexpr unsigned long |
1278 | lowest() noexcept { return min(); } |
1279 | #endif |
1280 | |
1281 | static _GLIBCXX_USE_CONSTEXPR int digits |
1282 | = __glibcxx_digits (unsigned long); |
1283 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
1284 | = __glibcxx_digits10 (unsigned long); |
1285 | #if __cplusplus >= 201103L |
1286 | static constexpr int max_digits10 = 0; |
1287 | #endif |
1288 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
1289 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1290 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1291 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1292 | |
1293 | static _GLIBCXX_CONSTEXPR unsigned long |
1294 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1295 | |
1296 | static _GLIBCXX_CONSTEXPR unsigned long |
1297 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1298 | |
1299 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1300 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1301 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1302 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1303 | |
1304 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1305 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1306 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1307 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1308 | = denorm_absent; |
1309 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1310 | |
1311 | static _GLIBCXX_CONSTEXPR unsigned long |
1312 | infinity() _GLIBCXX_USE_NOEXCEPT |
1313 | { return static_cast<unsigned long>(0); } |
1314 | |
1315 | static _GLIBCXX_CONSTEXPR unsigned long |
1316 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
1317 | { return static_cast<unsigned long>(0); } |
1318 | |
1319 | static _GLIBCXX_CONSTEXPR unsigned long |
1320 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
1321 | { return static_cast<unsigned long>(0); } |
1322 | |
1323 | static _GLIBCXX_CONSTEXPR unsigned long |
1324 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
1325 | { return static_cast<unsigned long>(0); } |
1326 | |
1327 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
1328 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1329 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
1330 | |
1331 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
1332 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
1333 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1334 | = round_toward_zero; |
1335 | }; |
1336 | |
1337 | /// numeric_limits<long long> specialization. |
1338 | template<> |
1339 | struct numeric_limits<long long> |
1340 | { |
1341 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1342 | |
1343 | static _GLIBCXX_CONSTEXPR long long |
1344 | min() _GLIBCXX_USE_NOEXCEPT { return -__LONG_LONG_MAX__ - 1; } |
1345 | |
1346 | static _GLIBCXX_CONSTEXPR long long |
1347 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_LONG_MAX__; } |
1348 | |
1349 | #if __cplusplus >= 201103L |
1350 | static constexpr long long |
1351 | lowest() noexcept { return min(); } |
1352 | #endif |
1353 | |
1354 | static _GLIBCXX_USE_CONSTEXPR int digits |
1355 | = __glibcxx_digits (long long); |
1356 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
1357 | = __glibcxx_digits10 (long long); |
1358 | #if __cplusplus >= 201103L |
1359 | static constexpr int max_digits10 = 0; |
1360 | #endif |
1361 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
1362 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1363 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1364 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1365 | |
1366 | static _GLIBCXX_CONSTEXPR long long |
1367 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1368 | |
1369 | static _GLIBCXX_CONSTEXPR long long |
1370 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1371 | |
1372 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1373 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1374 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1375 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1376 | |
1377 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1378 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1379 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1380 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1381 | = denorm_absent; |
1382 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1383 | |
1384 | static _GLIBCXX_CONSTEXPR long long |
1385 | infinity() _GLIBCXX_USE_NOEXCEPT { return static_cast<long long>(0); } |
1386 | |
1387 | static _GLIBCXX_CONSTEXPR long long |
1388 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return static_cast<long long>(0); } |
1389 | |
1390 | static _GLIBCXX_CONSTEXPR long long |
1391 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
1392 | { return static_cast<long long>(0); } |
1393 | |
1394 | static _GLIBCXX_CONSTEXPR long long |
1395 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return static_cast<long long>(0); } |
1396 | |
1397 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
1398 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1399 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
1400 | |
1401 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
1402 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
1403 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1404 | = round_toward_zero; |
1405 | }; |
1406 | |
1407 | /// numeric_limits<unsigned long long> specialization. |
1408 | template<> |
1409 | struct numeric_limits<unsigned long long> |
1410 | { |
1411 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1412 | |
1413 | static _GLIBCXX_CONSTEXPR unsigned long long |
1414 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1415 | |
1416 | static _GLIBCXX_CONSTEXPR unsigned long long |
1417 | max() _GLIBCXX_USE_NOEXCEPT { return __LONG_LONG_MAX__ * 2ULL + 1; } |
1418 | |
1419 | #if __cplusplus >= 201103L |
1420 | static constexpr unsigned long long |
1421 | lowest() noexcept { return min(); } |
1422 | #endif |
1423 | |
1424 | static _GLIBCXX_USE_CONSTEXPR int digits |
1425 | = __glibcxx_digits (unsigned long long); |
1426 | static _GLIBCXX_USE_CONSTEXPR int digits10 |
1427 | = __glibcxx_digits10 (unsigned long long); |
1428 | #if __cplusplus >= 201103L |
1429 | static constexpr int max_digits10 = 0; |
1430 | #endif |
1431 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; |
1432 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; |
1433 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; |
1434 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; |
1435 | |
1436 | static _GLIBCXX_CONSTEXPR unsigned long long |
1437 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1438 | |
1439 | static _GLIBCXX_CONSTEXPR unsigned long long |
1440 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } |
1441 | |
1442 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; |
1443 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; |
1444 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; |
1445 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; |
1446 | |
1447 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; |
1448 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; |
1449 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
1450 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1451 | = denorm_absent; |
1452 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
1453 | |
1454 | static _GLIBCXX_CONSTEXPR unsigned long long |
1455 | infinity() _GLIBCXX_USE_NOEXCEPT |
1456 | { return static_cast<unsigned long long>(0); } |
1457 | |
1458 | static _GLIBCXX_CONSTEXPR unsigned long long |
1459 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
1460 | { return static_cast<unsigned long long>(0); } |
1461 | |
1462 | static _GLIBCXX_CONSTEXPR unsigned long long |
1463 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
1464 | { return static_cast<unsigned long long>(0); } |
1465 | |
1466 | static _GLIBCXX_CONSTEXPR unsigned long long |
1467 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
1468 | { return static_cast<unsigned long long>(0); } |
1469 | |
1470 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; |
1471 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1472 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; |
1473 | |
1474 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; |
1475 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
1476 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1477 | = round_toward_zero; |
1478 | }; |
1479 | |
1480 | #define __INT_N(TYPE, BITSIZE, EXT, UEXT) \ |
1481 | __extension__ \ |
1482 | template<> \ |
1483 | struct numeric_limits<TYPE> \ |
1484 | { \ |
1485 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; \ |
1486 | \ |
1487 | static _GLIBCXX_CONSTEXPR TYPE \ |
1488 | min() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_min_b (TYPE, BITSIZE); } \ |
1489 | \ |
1490 | static _GLIBCXX_CONSTEXPR TYPE \ |
1491 | max() _GLIBCXX_USE_NOEXCEPT { return __glibcxx_max_b (TYPE, BITSIZE); } \ |
1492 | \ |
1493 | static _GLIBCXX_USE_CONSTEXPR int digits \ |
1494 | = BITSIZE - 1; \ |
1495 | static _GLIBCXX_USE_CONSTEXPR int digits10 \ |
1496 | = (BITSIZE - 1) * 643L / 2136; \ |
1497 | \ |
1498 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; \ |
1499 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; \ |
1500 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; \ |
1501 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; \ |
1502 | \ |
1503 | static _GLIBCXX_CONSTEXPR TYPE \ |
1504 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
1505 | \ |
1506 | static _GLIBCXX_CONSTEXPR TYPE \ |
1507 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
1508 | \ |
1509 | EXT \ |
1510 | \ |
1511 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; \ |
1512 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; \ |
1513 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; \ |
1514 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; \ |
1515 | \ |
1516 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; \ |
1517 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; \ |
1518 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; \ |
1519 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm \ |
1520 | = denorm_absent; \ |
1521 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; \ |
1522 | \ |
1523 | static _GLIBCXX_CONSTEXPR TYPE \ |
1524 | infinity() _GLIBCXX_USE_NOEXCEPT \ |
1525 | { return static_cast<TYPE>(0); } \ |
1526 | \ |
1527 | static _GLIBCXX_CONSTEXPR TYPE \ |
1528 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT \ |
1529 | { return static_cast<TYPE>(0); } \ |
1530 | \ |
1531 | static _GLIBCXX_CONSTEXPR TYPE \ |
1532 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT \ |
1533 | { return static_cast<TYPE>(0); } \ |
1534 | \ |
1535 | static _GLIBCXX_CONSTEXPR TYPE \ |
1536 | denorm_min() _GLIBCXX_USE_NOEXCEPT \ |
1537 | { return static_cast<TYPE>(0); } \ |
1538 | \ |
1539 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; \ |
1540 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; \ |
1541 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; \ |
1542 | \ |
1543 | static _GLIBCXX_USE_CONSTEXPR bool traps \ |
1544 | = __glibcxx_integral_traps; \ |
1545 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; \ |
1546 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style \ |
1547 | = round_toward_zero; \ |
1548 | }; \ |
1549 | \ |
1550 | __extension__ \ |
1551 | template<> \ |
1552 | struct numeric_limits<unsigned TYPE> \ |
1553 | { \ |
1554 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; \ |
1555 | \ |
1556 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1557 | min() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
1558 | \ |
1559 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1560 | max() _GLIBCXX_USE_NOEXCEPT \ |
1561 | { return __glibcxx_max_b (unsigned TYPE, BITSIZE); } \ |
1562 | \ |
1563 | UEXT \ |
1564 | \ |
1565 | static _GLIBCXX_USE_CONSTEXPR int digits \ |
1566 | = BITSIZE; \ |
1567 | static _GLIBCXX_USE_CONSTEXPR int digits10 \ |
1568 | = BITSIZE * 643L / 2136; \ |
1569 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = false; \ |
1570 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = true; \ |
1571 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = true; \ |
1572 | static _GLIBCXX_USE_CONSTEXPR int radix = 2; \ |
1573 | \ |
1574 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1575 | epsilon() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
1576 | \ |
1577 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1578 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0; } \ |
1579 | \ |
1580 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = 0; \ |
1581 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = 0; \ |
1582 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 0; \ |
1583 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 0; \ |
1584 | \ |
1585 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = false; \ |
1586 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = false; \ |
1587 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; \ |
1588 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm \ |
1589 | = denorm_absent; \ |
1590 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; \ |
1591 | \ |
1592 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1593 | infinity() _GLIBCXX_USE_NOEXCEPT \ |
1594 | { return static_cast<unsigned TYPE>(0); } \ |
1595 | \ |
1596 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1597 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT \ |
1598 | { return static_cast<unsigned TYPE>(0); } \ |
1599 | \ |
1600 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1601 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT \ |
1602 | { return static_cast<unsigned TYPE>(0); } \ |
1603 | \ |
1604 | static _GLIBCXX_CONSTEXPR unsigned TYPE \ |
1605 | denorm_min() _GLIBCXX_USE_NOEXCEPT \ |
1606 | { return static_cast<unsigned TYPE>(0); } \ |
1607 | \ |
1608 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = false; \ |
1609 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; \ |
1610 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = true; \ |
1611 | \ |
1612 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_integral_traps; \ |
1613 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; \ |
1614 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style \ |
1615 | = round_toward_zero; \ |
1616 | }; |
1617 | |
1618 | #if __cplusplus >= 201103L |
1619 | |
1620 | #define __INT_N_201103(TYPE) \ |
1621 | static constexpr TYPE \ |
1622 | lowest() noexcept { return min(); } \ |
1623 | static constexpr int max_digits10 = 0; |
1624 | |
1625 | #define __INT_N_U201103(TYPE) \ |
1626 | static constexpr unsigned TYPE \ |
1627 | lowest() noexcept { return min(); } \ |
1628 | static constexpr int max_digits10 = 0; |
1629 | |
1630 | #else |
1631 | #define __INT_N_201103(TYPE) |
1632 | #define __INT_N_U201103(TYPE) |
1633 | #endif |
1634 | |
1635 | #if !defined(__STRICT_ANSI__) |
1636 | #ifdef __GLIBCXX_TYPE_INT_N_0 |
1637 | __INT_N(__GLIBCXX_TYPE_INT_N_0, __GLIBCXX_BITSIZE_INT_N_0, |
1638 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_0), |
1639 | __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_0)) |
1640 | #endif |
1641 | #ifdef __GLIBCXX_TYPE_INT_N_1 |
1642 | __INT_N (__GLIBCXX_TYPE_INT_N_1, __GLIBCXX_BITSIZE_INT_N_1, |
1643 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_1), |
1644 | __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_1)) |
1645 | #endif |
1646 | #ifdef __GLIBCXX_TYPE_INT_N_2 |
1647 | __INT_N (__GLIBCXX_TYPE_INT_N_2, __GLIBCXX_BITSIZE_INT_N_2, |
1648 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_2), |
1649 | __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_2)) |
1650 | #endif |
1651 | #ifdef __GLIBCXX_TYPE_INT_N_3 |
1652 | __INT_N (__GLIBCXX_TYPE_INT_N_3, __GLIBCXX_BITSIZE_INT_N_3, |
1653 | __INT_N_201103 (__GLIBCXX_TYPE_INT_N_3), |
1654 | __INT_N_U201103 (__GLIBCXX_TYPE_INT_N_3)) |
1655 | #endif |
1656 | |
1657 | #elif defined __STRICT_ANSI__ && defined __SIZEOF_INT128__ |
1658 | __INT_N(__int128, 128, |
1659 | __INT_N_201103 (__int128), |
1660 | __INT_N_U201103 (__int128)) |
1661 | #endif |
1662 | |
1663 | #undef __INT_N |
1664 | #undef __INT_N_201103 |
1665 | #undef __INT_N_U201103 |
1666 | |
1667 | |
1668 | /// numeric_limits<float> specialization. |
1669 | template<> |
1670 | struct numeric_limits<float> |
1671 | { |
1672 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1673 | |
1674 | static _GLIBCXX_CONSTEXPR float |
1675 | min() _GLIBCXX_USE_NOEXCEPT { return __FLT_MIN__; } |
1676 | |
1677 | static _GLIBCXX_CONSTEXPR float |
1678 | max() _GLIBCXX_USE_NOEXCEPT { return __FLT_MAX__; } |
1679 | |
1680 | #if __cplusplus >= 201103L |
1681 | static constexpr float |
1682 | lowest() noexcept { return -__FLT_MAX__; } |
1683 | #endif |
1684 | |
1685 | static _GLIBCXX_USE_CONSTEXPR int digits = __FLT_MANT_DIG__; |
1686 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __FLT_DIG__; |
1687 | #if __cplusplus >= 201103L |
1688 | static constexpr int max_digits10 |
1689 | = __glibcxx_max_digits10 (__FLT_MANT_DIG__); |
1690 | #endif |
1691 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
1692 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
1693 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
1694 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
1695 | |
1696 | static _GLIBCXX_CONSTEXPR float |
1697 | epsilon() _GLIBCXX_USE_NOEXCEPT { return __FLT_EPSILON__; } |
1698 | |
1699 | static _GLIBCXX_CONSTEXPR float |
1700 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5F; } |
1701 | |
1702 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __FLT_MIN_EXP__; |
1703 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __FLT_MIN_10_EXP__; |
1704 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __FLT_MAX_EXP__; |
1705 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __FLT_MAX_10_EXP__; |
1706 | |
1707 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = __FLT_HAS_INFINITY__; |
1708 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = __FLT_HAS_QUIET_NAN__; |
1709 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
1710 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1711 | = bool(__FLT_HAS_DENORM__) ? denorm_present : denorm_absent; |
1712 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss |
1713 | = __glibcxx_float_has_denorm_loss; |
1714 | |
1715 | static _GLIBCXX_CONSTEXPR float |
1716 | infinity() _GLIBCXX_USE_NOEXCEPT { return __builtin_huge_valf(); } |
1717 | |
1718 | static _GLIBCXX_CONSTEXPR float |
1719 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nanf("" ); } |
1720 | |
1721 | static _GLIBCXX_CONSTEXPR float |
1722 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nansf("" ); } |
1723 | |
1724 | static _GLIBCXX_CONSTEXPR float |
1725 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return __FLT_DENORM_MIN__; } |
1726 | |
1727 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
1728 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
1729 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1730 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
1731 | |
1732 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_float_traps; |
1733 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before |
1734 | = __glibcxx_float_tinyness_before; |
1735 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1736 | = round_to_nearest; |
1737 | }; |
1738 | |
1739 | #undef __glibcxx_float_has_denorm_loss |
1740 | #undef __glibcxx_float_traps |
1741 | #undef __glibcxx_float_tinyness_before |
1742 | |
1743 | /// numeric_limits<double> specialization. |
1744 | template<> |
1745 | struct numeric_limits<double> |
1746 | { |
1747 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1748 | |
1749 | static _GLIBCXX_CONSTEXPR double |
1750 | min() _GLIBCXX_USE_NOEXCEPT { return __DBL_MIN__; } |
1751 | |
1752 | static _GLIBCXX_CONSTEXPR double |
1753 | max() _GLIBCXX_USE_NOEXCEPT { return __DBL_MAX__; } |
1754 | |
1755 | #if __cplusplus >= 201103L |
1756 | static constexpr double |
1757 | lowest() noexcept { return -__DBL_MAX__; } |
1758 | #endif |
1759 | |
1760 | static _GLIBCXX_USE_CONSTEXPR int digits = __DBL_MANT_DIG__; |
1761 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __DBL_DIG__; |
1762 | #if __cplusplus >= 201103L |
1763 | static constexpr int max_digits10 |
1764 | = __glibcxx_max_digits10 (__DBL_MANT_DIG__); |
1765 | #endif |
1766 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
1767 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
1768 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
1769 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
1770 | |
1771 | static _GLIBCXX_CONSTEXPR double |
1772 | epsilon() _GLIBCXX_USE_NOEXCEPT { return __DBL_EPSILON__; } |
1773 | |
1774 | static _GLIBCXX_CONSTEXPR double |
1775 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5; } |
1776 | |
1777 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __DBL_MIN_EXP__; |
1778 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __DBL_MIN_10_EXP__; |
1779 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __DBL_MAX_EXP__; |
1780 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __DBL_MAX_10_EXP__; |
1781 | |
1782 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = __DBL_HAS_INFINITY__; |
1783 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = __DBL_HAS_QUIET_NAN__; |
1784 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
1785 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1786 | = bool(__DBL_HAS_DENORM__) ? denorm_present : denorm_absent; |
1787 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss |
1788 | = __glibcxx_double_has_denorm_loss; |
1789 | |
1790 | static _GLIBCXX_CONSTEXPR double |
1791 | infinity() _GLIBCXX_USE_NOEXCEPT { return __builtin_huge_val(); } |
1792 | |
1793 | static _GLIBCXX_CONSTEXPR double |
1794 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nan("" ); } |
1795 | |
1796 | static _GLIBCXX_CONSTEXPR double |
1797 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nans("" ); } |
1798 | |
1799 | static _GLIBCXX_CONSTEXPR double |
1800 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return __DBL_DENORM_MIN__; } |
1801 | |
1802 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
1803 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
1804 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1805 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
1806 | |
1807 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_double_traps; |
1808 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before |
1809 | = __glibcxx_double_tinyness_before; |
1810 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
1811 | = round_to_nearest; |
1812 | }; |
1813 | |
1814 | #undef __glibcxx_double_has_denorm_loss |
1815 | #undef __glibcxx_double_traps |
1816 | #undef __glibcxx_double_tinyness_before |
1817 | |
1818 | /// numeric_limits<long double> specialization. |
1819 | template<> |
1820 | struct numeric_limits<long double> |
1821 | { |
1822 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
1823 | |
1824 | static _GLIBCXX_CONSTEXPR long double |
1825 | min() _GLIBCXX_USE_NOEXCEPT { return __LDBL_MIN__; } |
1826 | |
1827 | static _GLIBCXX_CONSTEXPR long double |
1828 | max() _GLIBCXX_USE_NOEXCEPT { return __LDBL_MAX__; } |
1829 | |
1830 | #if __cplusplus >= 201103L |
1831 | static constexpr long double |
1832 | lowest() noexcept { return -__LDBL_MAX__; } |
1833 | #endif |
1834 | |
1835 | static _GLIBCXX_USE_CONSTEXPR int digits = __LDBL_MANT_DIG__; |
1836 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __LDBL_DIG__; |
1837 | #if __cplusplus >= 201103L |
1838 | static _GLIBCXX_USE_CONSTEXPR int max_digits10 |
1839 | = __glibcxx_max_digits10 (__LDBL_MANT_DIG__); |
1840 | #endif |
1841 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
1842 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
1843 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
1844 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
1845 | |
1846 | static _GLIBCXX_CONSTEXPR long double |
1847 | epsilon() _GLIBCXX_USE_NOEXCEPT { return __LDBL_EPSILON__; } |
1848 | |
1849 | static _GLIBCXX_CONSTEXPR long double |
1850 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5L; } |
1851 | |
1852 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __LDBL_MIN_EXP__; |
1853 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __LDBL_MIN_10_EXP__; |
1854 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __LDBL_MAX_EXP__; |
1855 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __LDBL_MAX_10_EXP__; |
1856 | |
1857 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = __LDBL_HAS_INFINITY__; |
1858 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = __LDBL_HAS_QUIET_NAN__; |
1859 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
1860 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
1861 | = bool(__LDBL_HAS_DENORM__) ? denorm_present : denorm_absent; |
1862 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss |
1863 | = __glibcxx_long_double_has_denorm_loss; |
1864 | |
1865 | static _GLIBCXX_CONSTEXPR long double |
1866 | infinity() _GLIBCXX_USE_NOEXCEPT { return __builtin_huge_vall(); } |
1867 | |
1868 | static _GLIBCXX_CONSTEXPR long double |
1869 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nanl("" ); } |
1870 | |
1871 | static _GLIBCXX_CONSTEXPR long double |
1872 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT { return __builtin_nansl("" ); } |
1873 | |
1874 | static _GLIBCXX_CONSTEXPR long double |
1875 | denorm_min() _GLIBCXX_USE_NOEXCEPT { return __LDBL_DENORM_MIN__; } |
1876 | |
1877 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
1878 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
1879 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
1880 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
1881 | |
1882 | static _GLIBCXX_USE_CONSTEXPR bool traps = __glibcxx_long_double_traps; |
1883 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = |
1884 | __glibcxx_long_double_tinyness_before; |
1885 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style = |
1886 | round_to_nearest; |
1887 | }; |
1888 | |
1889 | #undef __glibcxx_long_double_has_denorm_loss |
1890 | #undef __glibcxx_long_double_traps |
1891 | #undef __glibcxx_long_double_tinyness_before |
1892 | |
1893 | #define __glibcxx_concat3_(P,M,S) P ## M ## S |
1894 | #define __glibcxx_concat3(P,M,S) __glibcxx_concat3_ (P,M,S) |
1895 | |
1896 | #if __cplusplus >= 201103L |
1897 | # define __max_digits10 max_digits10 |
1898 | #endif |
1899 | |
1900 | #define __glibcxx_float_n(BITSIZE) \ |
1901 | __extension__ \ |
1902 | template<> \ |
1903 | struct numeric_limits<_Float##BITSIZE> \ |
1904 | { \ |
1905 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; \ |
1906 | \ |
1907 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1908 | min() _GLIBCXX_USE_NOEXCEPT \ |
1909 | { return __glibcxx_concat3 (__FLT, BITSIZE, _MIN__); } \ |
1910 | \ |
1911 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1912 | max() _GLIBCXX_USE_NOEXCEPT \ |
1913 | { return __glibcxx_concat3 (__FLT, BITSIZE, _MAX__); } \ |
1914 | \ |
1915 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1916 | lowest() _GLIBCXX_USE_NOEXCEPT \ |
1917 | { return -__glibcxx_concat3 (__FLT, BITSIZE, _MAX__); } \ |
1918 | \ |
1919 | static _GLIBCXX_USE_CONSTEXPR int digits \ |
1920 | = __glibcxx_concat3 (__FLT, BITSIZE, _MANT_DIG__); \ |
1921 | static _GLIBCXX_USE_CONSTEXPR int digits10 \ |
1922 | = __glibcxx_concat3 (__FLT, BITSIZE, _DIG__); \ |
1923 | static _GLIBCXX_USE_CONSTEXPR int __max_digits10 \ |
1924 | = __glibcxx_max_digits10 (__glibcxx_concat3 (__FLT, BITSIZE, \ |
1925 | _MANT_DIG__)); \ |
1926 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; \ |
1927 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; \ |
1928 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; \ |
1929 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; \ |
1930 | \ |
1931 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1932 | epsilon() _GLIBCXX_USE_NOEXCEPT \ |
1933 | { return __glibcxx_concat3 (__FLT, BITSIZE, _EPSILON__); } \ |
1934 | \ |
1935 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1936 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5F##BITSIZE; } \ |
1937 | \ |
1938 | static _GLIBCXX_USE_CONSTEXPR int min_exponent \ |
1939 | = __glibcxx_concat3 (__FLT, BITSIZE, _MIN_EXP__); \ |
1940 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 \ |
1941 | = __glibcxx_concat3 (__FLT, BITSIZE, _MIN_10_EXP__); \ |
1942 | static _GLIBCXX_USE_CONSTEXPR int max_exponent \ |
1943 | = __glibcxx_concat3 (__FLT, BITSIZE, _MAX_EXP__); \ |
1944 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 \ |
1945 | = __glibcxx_concat3 (__FLT, BITSIZE, _MAX_10_EXP__); \ |
1946 | \ |
1947 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity \ |
1948 | = __glibcxx_concat3 (__FLT, BITSIZE, _HAS_INFINITY__); \ |
1949 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN \ |
1950 | = __glibcxx_concat3 (__FLT, BITSIZE, _HAS_QUIET_NAN__); \ |
1951 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN \ |
1952 | = has_quiet_NaN; \ |
1953 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm \ |
1954 | = bool(__glibcxx_concat3 (__FLT, BITSIZE, _HAS_DENORM__)) \ |
1955 | ? denorm_present : denorm_absent; \ |
1956 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; \ |
1957 | \ |
1958 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1959 | infinity() _GLIBCXX_USE_NOEXCEPT \ |
1960 | { return __builtin_huge_valf##BITSIZE(); } \ |
1961 | \ |
1962 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1963 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT \ |
1964 | { return __builtin_nanf##BITSIZE(""); } \ |
1965 | \ |
1966 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1967 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT \ |
1968 | { return __builtin_nansf##BITSIZE(""); } \ |
1969 | \ |
1970 | static _GLIBCXX_CONSTEXPR _Float##BITSIZE \ |
1971 | denorm_min() _GLIBCXX_USE_NOEXCEPT \ |
1972 | { return __glibcxx_concat3 (__FLT, BITSIZE, _DENORM_MIN__); } \ |
1973 | \ |
1974 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 \ |
1975 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present;\ |
1976 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; \ |
1977 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; \ |
1978 | \ |
1979 | static _GLIBCXX_USE_CONSTEXPR bool traps = false; \ |
1980 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; \ |
1981 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style \ |
1982 | = round_to_nearest; \ |
1983 | }; \ |
1984 | |
1985 | #ifdef __STDCPP_FLOAT16_T__ |
1986 | __glibcxx_float_n(16) |
1987 | #endif |
1988 | #ifdef __FLT32_DIG__ |
1989 | __glibcxx_float_n(32) |
1990 | #endif |
1991 | #ifdef __FLT64_DIG__ |
1992 | __glibcxx_float_n(64) |
1993 | #endif |
1994 | #ifdef __FLT128_DIG__ |
1995 | __glibcxx_float_n(128) |
1996 | #endif |
1997 | #undef __glibcxx_float_n |
1998 | #undef __glibcxx_concat3 |
1999 | #undef __glibcxx_concat3_ |
2000 | |
2001 | #if __cplusplus >= 201103L |
2002 | # undef __max_digits10 |
2003 | #endif |
2004 | |
2005 | #ifdef __STDCPP_BFLOAT16_T__ |
2006 | __extension__ |
2007 | template<> |
2008 | struct numeric_limits<__gnu_cxx::__bfloat16_t> |
2009 | { |
2010 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
2011 | |
2012 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2013 | min() _GLIBCXX_USE_NOEXCEPT |
2014 | { return __BFLT16_MIN__; } |
2015 | |
2016 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2017 | max() _GLIBCXX_USE_NOEXCEPT |
2018 | { return __BFLT16_MAX__; } |
2019 | |
2020 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2021 | lowest() _GLIBCXX_USE_NOEXCEPT |
2022 | { return -__BFLT16_MAX__; } |
2023 | |
2024 | static _GLIBCXX_USE_CONSTEXPR int digits = __BFLT16_MANT_DIG__; |
2025 | static _GLIBCXX_USE_CONSTEXPR int digits10 = __BFLT16_DIG__; |
2026 | #if __cplusplus >= 201103L |
2027 | static _GLIBCXX_USE_CONSTEXPR int max_digits10 |
2028 | = __glibcxx_max_digits10 (__BFLT16_MANT_DIG__); |
2029 | #endif |
2030 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
2031 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
2032 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
2033 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
2034 | |
2035 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2036 | epsilon() _GLIBCXX_USE_NOEXCEPT |
2037 | { return __BFLT16_EPSILON__; } |
2038 | |
2039 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2040 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5BF16; } |
2041 | |
2042 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = __BFLT16_MIN_EXP__; |
2043 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = __BFLT16_MIN_10_EXP__; |
2044 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = __BFLT16_MAX_EXP__; |
2045 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = __BFLT16_MAX_10_EXP__; |
2046 | |
2047 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity |
2048 | = __BFLT16_HAS_INFINITY__; |
2049 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN |
2050 | = __BFLT16_HAS_QUIET_NAN__; |
2051 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = has_quiet_NaN; |
2052 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
2053 | = bool(__BFLT16_HAS_DENORM__) ? denorm_present : denorm_absent; |
2054 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
2055 | |
2056 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2057 | infinity() _GLIBCXX_USE_NOEXCEPT |
2058 | { return __gnu_cxx::__bfloat16_t(__builtin_huge_valf()); } |
2059 | |
2060 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2061 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
2062 | { return __gnu_cxx::__bfloat16_t(__builtin_nanf("" )); } |
2063 | |
2064 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2065 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
2066 | { return __builtin_nansf16b("" ); } |
2067 | |
2068 | static _GLIBCXX_CONSTEXPR __gnu_cxx::__bfloat16_t |
2069 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
2070 | { return __BFLT16_DENORM_MIN__; } |
2071 | |
2072 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 |
2073 | = has_infinity && has_quiet_NaN && has_denorm == denorm_present; |
2074 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
2075 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
2076 | |
2077 | static _GLIBCXX_USE_CONSTEXPR bool traps = false; |
2078 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
2079 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
2080 | = round_to_nearest; |
2081 | }; |
2082 | #endif // __STDCPP_BFLOAT16_T__ |
2083 | |
2084 | #if defined(_GLIBCXX_USE_FLOAT128) |
2085 | // We either need Q literal suffixes, or IEEE double. |
2086 | #if ! defined(__STRICT_ANSI__) || defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) |
2087 | __extension__ |
2088 | template<> |
2089 | struct numeric_limits<__float128> |
2090 | { |
2091 | static _GLIBCXX_USE_CONSTEXPR bool is_specialized = true; |
2092 | |
2093 | static _GLIBCXX_CONSTEXPR __float128 |
2094 | min() _GLIBCXX_USE_NOEXCEPT |
2095 | { |
2096 | #ifdef __STRICT_ANSI__ |
2097 | // 0x1.0p-30 * 0x1.0p-16352 |
2098 | return double(9.3132257461547852e-10) * _S_1pm16352(); |
2099 | #else |
2100 | return __extension__ 0x1.0p-16382Q; |
2101 | #endif |
2102 | } |
2103 | |
2104 | static _GLIBCXX_CONSTEXPR __float128 |
2105 | max() _GLIBCXX_USE_NOEXCEPT |
2106 | { |
2107 | #ifdef __STRICT_ANSI__ |
2108 | // (0x1.fffffffffffffp+127 + 0x0.fffffffffffffp+75 + 0x0.ffp+23) |
2109 | // * 0x1.0p16256 |
2110 | return (__float128(double(3.4028236692093843e+38)) |
2111 | + double(3.7778931862957153e+22) + double(8.35584e+6)) |
2112 | * _S_1p16256(); |
2113 | #else |
2114 | return __extension__ 0x1.ffffffffffffffffffffffffffffp+16383Q; |
2115 | #endif |
2116 | } |
2117 | |
2118 | static _GLIBCXX_CONSTEXPR __float128 |
2119 | lowest() _GLIBCXX_USE_NOEXCEPT |
2120 | { return -max(); } |
2121 | |
2122 | static _GLIBCXX_USE_CONSTEXPR int digits = 113; |
2123 | static _GLIBCXX_USE_CONSTEXPR int digits10 = 33; |
2124 | #if __cplusplus >= 201103L |
2125 | static constexpr int max_digits10 = 35; |
2126 | #endif |
2127 | static _GLIBCXX_USE_CONSTEXPR bool is_signed = true; |
2128 | static _GLIBCXX_USE_CONSTEXPR bool is_integer = false; |
2129 | static _GLIBCXX_USE_CONSTEXPR bool is_exact = false; |
2130 | static _GLIBCXX_USE_CONSTEXPR int radix = __FLT_RADIX__; |
2131 | |
2132 | static _GLIBCXX_CONSTEXPR __float128 |
2133 | epsilon() _GLIBCXX_USE_NOEXCEPT |
2134 | { return double(1.9259299443872359e-34); } |
2135 | |
2136 | static _GLIBCXX_CONSTEXPR __float128 |
2137 | round_error() _GLIBCXX_USE_NOEXCEPT { return 0.5; } |
2138 | |
2139 | static _GLIBCXX_USE_CONSTEXPR int min_exponent = -16381; |
2140 | static _GLIBCXX_USE_CONSTEXPR int min_exponent10 = -4931; |
2141 | static _GLIBCXX_USE_CONSTEXPR int max_exponent = 16384; |
2142 | static _GLIBCXX_USE_CONSTEXPR int max_exponent10 = 4932; |
2143 | |
2144 | static _GLIBCXX_USE_CONSTEXPR bool has_infinity = 1; |
2145 | static _GLIBCXX_USE_CONSTEXPR bool has_quiet_NaN = 1; |
2146 | #if __has_builtin(__builtin_nansq) \ |
2147 | || (__has_builtin(__builtin_bit_cast) && __has_builtin(__builtin_nansf128)) |
2148 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = true; |
2149 | #else |
2150 | static _GLIBCXX_USE_CONSTEXPR bool has_signaling_NaN = false; |
2151 | #endif |
2152 | static _GLIBCXX_USE_CONSTEXPR float_denorm_style has_denorm |
2153 | = denorm_present; |
2154 | static _GLIBCXX_USE_CONSTEXPR bool has_denorm_loss = false; |
2155 | |
2156 | static _GLIBCXX_CONSTEXPR __float128 |
2157 | infinity() _GLIBCXX_USE_NOEXCEPT |
2158 | { return __builtin_huge_val(); } |
2159 | |
2160 | static _GLIBCXX_CONSTEXPR __float128 |
2161 | quiet_NaN() _GLIBCXX_USE_NOEXCEPT |
2162 | { return __builtin_nan("" ); } |
2163 | |
2164 | static _GLIBCXX_CONSTEXPR __float128 |
2165 | signaling_NaN() _GLIBCXX_USE_NOEXCEPT |
2166 | { |
2167 | #if __has_builtin(__builtin_nansq) |
2168 | return __builtin_nansq("" ); |
2169 | #elif __has_builtin(__builtin_bit_cast) && __has_builtin(__builtin_nansf128) |
2170 | return __builtin_bit_cast(__float128, __builtin_nansf128("" )); |
2171 | #else |
2172 | return quiet_NaN(); |
2173 | #endif |
2174 | } |
2175 | |
2176 | static _GLIBCXX_CONSTEXPR __float128 |
2177 | denorm_min() _GLIBCXX_USE_NOEXCEPT |
2178 | { |
2179 | #if defined(__STRICT_ANSI__) || defined(__INTEL_COMPILER) |
2180 | // 0x1.0p-142 * 0x1.0p-16352 |
2181 | return double(1.7936620343357659e-43) * _S_1pm16352(); |
2182 | #else |
2183 | return __extension__ 0x1.0p-16494Q; |
2184 | #endif |
2185 | } |
2186 | |
2187 | static _GLIBCXX_USE_CONSTEXPR bool is_iec559 = has_signaling_NaN; |
2188 | static _GLIBCXX_USE_CONSTEXPR bool is_bounded = true; |
2189 | static _GLIBCXX_USE_CONSTEXPR bool is_modulo = false; |
2190 | |
2191 | static _GLIBCXX_USE_CONSTEXPR bool traps = false; |
2192 | static _GLIBCXX_USE_CONSTEXPR bool tinyness_before = false; |
2193 | static _GLIBCXX_USE_CONSTEXPR float_round_style round_style |
2194 | = round_to_nearest; |
2195 | |
2196 | #if defined(__STRICT_ANSI__) || defined(__INTEL_COMPILER) |
2197 | private: |
2198 | static _GLIBCXX_CONSTEXPR __float128 |
2199 | _S_4p(__float128 __v) _GLIBCXX_USE_NOEXCEPT |
2200 | { return __v * __v * __v * __v; } |
2201 | |
2202 | static _GLIBCXX_CONSTEXPR __float128 |
2203 | _S_1pm4088() _GLIBCXX_USE_NOEXCEPT |
2204 | { return _S_4p(/* 0x1.0p-1022 */ double(2.2250738585072014e-308)); } |
2205 | |
2206 | static _GLIBCXX_CONSTEXPR __float128 |
2207 | _S_1pm16352() _GLIBCXX_USE_NOEXCEPT |
2208 | { return _S_4p(_S_1pm4088()); } |
2209 | |
2210 | static _GLIBCXX_CONSTEXPR __float128 |
2211 | _S_1p4064() _GLIBCXX_USE_NOEXCEPT |
2212 | { return _S_4p(/* 0x1.0p+1016 */ double(7.0222388080559215e+305)); } |
2213 | |
2214 | static _GLIBCXX_CONSTEXPR __float128 |
2215 | _S_1p16256() _GLIBCXX_USE_NOEXCEPT |
2216 | { return _S_4p(_S_1p4064()); } |
2217 | #endif |
2218 | }; |
2219 | #endif // !__STRICT_ANSI__ || DOUBLE_IS_IEEE_BINARY64 |
2220 | #endif // _GLIBCXX_USE_FLOAT128 |
2221 | |
2222 | _GLIBCXX_END_NAMESPACE_VERSION |
2223 | } // namespace |
2224 | |
2225 | #undef __glibcxx_signed |
2226 | #undef __glibcxx_min |
2227 | #undef __glibcxx_max |
2228 | #undef __glibcxx_digits |
2229 | #undef __glibcxx_digits10 |
2230 | #undef __glibcxx_max_digits10 |
2231 | |
2232 | #endif // _GLIBCXX_NUMERIC_LIMITS |
2233 | |