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Howard Hinnantbc8d3f92010-05-11 19:42:16 +00001// -*- C++ -*-
2//===---------------------------- limits ----------------------------------===//
3//
Howard Hinnantf5256e12010-05-11 21:36:01 +00004// The LLVM Compiler Infrastructure
Howard Hinnantbc8d3f92010-05-11 19:42:16 +00005//
Howard Hinnantb64f8b02010-11-16 22:09:02 +00006// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
Howard Hinnantbc8d3f92010-05-11 19:42:16 +00008//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_LIMITS
12#define _LIBCPP_LIMITS
13
14/*
15 limits synopsis
16
17namespace std
18{
19
20template<class T>
21class numeric_limits
22{
23public:
24 static const bool is_specialized = false;
Howard Hinnanted569212011-05-26 18:23:59 +000025 static T min() noexcept;
26 static T max() noexcept;
27 static T lowest() noexcept;
Howard Hinnantbc8d3f92010-05-11 19:42:16 +000028
29 static const int digits = 0;
30 static const int digits10 = 0;
31 static const int max_digits10 = 0;
32 static const bool is_signed = false;
33 static const bool is_integer = false;
34 static const bool is_exact = false;
35 static const int radix = 0;
Howard Hinnanted569212011-05-26 18:23:59 +000036 static T epsilon() noexcept;
37 static T round_error() noexcept;
Howard Hinnantbc8d3f92010-05-11 19:42:16 +000038
39 static const int min_exponent = 0;
40 static const int min_exponent10 = 0;
41 static const int max_exponent = 0;
42 static const int max_exponent10 = 0;
43
44 static const bool has_infinity = false;
45 static const bool has_quiet_NaN = false;
46 static const bool has_signaling_NaN = false;
47 static const float_denorm_style has_denorm = denorm_absent;
48 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +000049 static T infinity() noexcept;
50 static T quiet_NaN() noexcept;
51 static T signaling_NaN() noexcept;
52 static T denorm_min() noexcept;
Howard Hinnantbc8d3f92010-05-11 19:42:16 +000053
54 static const bool is_iec559 = false;
55 static const bool is_bounded = false;
56 static const bool is_modulo = false;
57
58 static const bool traps = false;
59 static const bool tinyness_before = false;
60 static const float_round_style round_style = round_toward_zero;
61};
62
63enum float_round_style
64{
65 round_indeterminate = -1,
66 round_toward_zero = 0,
67 round_to_nearest = 1,
68 round_toward_infinity = 2,
69 round_toward_neg_infinity = 3
70};
71
72enum float_denorm_style
73{
74 denorm_indeterminate = -1,
75 denorm_absent = 0,
76 denorm_present = 1
77};
78
79template<> class numeric_limits<cv bool>;
80
81template<> class numeric_limits<cv char>;
82template<> class numeric_limits<cv signed char>;
83template<> class numeric_limits<cv unsigned char>;
84template<> class numeric_limits<cv wchar_t>;
85template<> class numeric_limits<cv char16_t>;
86template<> class numeric_limits<cv char32_t>;
87
88template<> class numeric_limits<cv short>;
89template<> class numeric_limits<cv int>;
90template<> class numeric_limits<cv long>;
91template<> class numeric_limits<cv long long>;
92template<> class numeric_limits<cv unsigned short>;
93template<> class numeric_limits<cv unsigned int>;
94template<> class numeric_limits<cv unsigned long>;
95template<> class numeric_limits<cv unsigned long long>;
96
97template<> class numeric_limits<cv float>;
98template<> class numeric_limits<cv double>;
99template<> class numeric_limits<cv long double>;
100
101} // std
102
103*/
104
Howard Hinnant08e17472011-10-17 20:05:10 +0000105#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000106#pragma GCC system_header
Howard Hinnant08e17472011-10-17 20:05:10 +0000107#endif
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000108
109#include <__config>
110#include <type_traits>
111
Howard Hinnant66c6f972011-11-29 16:45:27 +0000112#include <__undef_min_max>
113
Howard Hinnant78b68282011-10-22 20:59:45 +0000114#if defined(_MSC_VER)
115#include "support/win32/limits_win32.h"
116#endif // _MSC_VER
117
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000118_LIBCPP_BEGIN_NAMESPACE_STD
119
120enum float_round_style
121{
122 round_indeterminate = -1,
123 round_toward_zero = 0,
124 round_to_nearest = 1,
125 round_toward_infinity = 2,
126 round_toward_neg_infinity = 3
127};
128
129enum float_denorm_style
130{
131 denorm_indeterminate = -1,
132 denorm_absent = 0,
133 denorm_present = 1
134};
135
136template <class _Tp, bool = is_arithmetic<_Tp>::value>
137class __libcpp_numeric_limits
138{
139protected:
140 typedef _Tp type;
141
142 static const bool is_specialized = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000143 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return type();}
144 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return type();}
145 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return type();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000146
147 static const int digits = 0;
148 static const int digits10 = 0;
149 static const int max_digits10 = 0;
150 static const bool is_signed = false;
151 static const bool is_integer = false;
152 static const bool is_exact = false;
153 static const int radix = 0;
Howard Hinnanted569212011-05-26 18:23:59 +0000154 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return type();}
155 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return type();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000156
157 static const int min_exponent = 0;
158 static const int min_exponent10 = 0;
159 static const int max_exponent = 0;
160 static const int max_exponent10 = 0;
161
162 static const bool has_infinity = false;
163 static const bool has_quiet_NaN = false;
164 static const bool has_signaling_NaN = false;
165 static const float_denorm_style has_denorm = denorm_absent;
166 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000167 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return type();}
168 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return type();}
169 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return type();}
170 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return type();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000171
172 static const bool is_iec559 = false;
173 static const bool is_bounded = false;
174 static const bool is_modulo = false;
175
176 static const bool traps = false;
177 static const bool tinyness_before = false;
178 static const float_round_style round_style = round_toward_zero;
179};
180
181template <class _Tp, int digits, bool is_signed>
182struct __libcpp_compute_min
183{
184 static const _Tp value = _Tp(_Tp(1) << digits);
185};
186
187template <class _Tp, int digits>
188struct __libcpp_compute_min<_Tp, digits, false>
189{
190 static const _Tp value = _Tp(0);
191};
192
193template <class _Tp>
194class __libcpp_numeric_limits<_Tp, true>
195{
196protected:
197 typedef _Tp type;
198
199 static const bool is_specialized = true;
200
201 static const bool is_signed = type(-1) < type(0);
202 static const int digits = static_cast<int>(sizeof(type) * __CHAR_BIT__ - is_signed);
203 static const int digits10 = digits * 3 / 10;
204 static const int max_digits10 = 0;
205 static const type __min = __libcpp_compute_min<type, digits, is_signed>::value;
206 static const type __max = is_signed ? type(type(~0) ^ __min) : type(~0);
Howard Hinnanted569212011-05-26 18:23:59 +0000207 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __min;}
208 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __max;}
209 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return min();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000210
211 static const bool is_integer = true;
212 static const bool is_exact = true;
213 static const int radix = 2;
Howard Hinnanted569212011-05-26 18:23:59 +0000214 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return type(0);}
215 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return type(0);}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000216
217 static const int min_exponent = 0;
218 static const int min_exponent10 = 0;
219 static const int max_exponent = 0;
220 static const int max_exponent10 = 0;
221
222 static const bool has_infinity = false;
223 static const bool has_quiet_NaN = false;
224 static const bool has_signaling_NaN = false;
225 static const float_denorm_style has_denorm = denorm_absent;
226 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000227 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return type(0);}
228 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return type(0);}
229 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return type(0);}
230 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return type(0);}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000231
232 static const bool is_iec559 = false;
233 static const bool is_bounded = true;
234 static const bool is_modulo = true;
235
236#if __i386__ || __x86_64__
237 static const bool traps = true;
238#else
239 static const bool traps = false;
240#endif
241 static const bool tinyness_before = false;
242 static const float_round_style round_style = round_toward_zero;
243};
244
245template <>
246class __libcpp_numeric_limits<bool, true>
247{
248protected:
249 typedef bool type;
250
251 static const bool is_specialized = true;
252
253 static const bool is_signed = false;
254 static const int digits = 1;
255 static const int digits10 = 0;
256 static const int max_digits10 = 0;
257 static const type __min = false;
258 static const type __max = true;
Howard Hinnanted569212011-05-26 18:23:59 +0000259 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __min;}
260 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __max;}
261 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return min();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000262
263 static const bool is_integer = true;
264 static const bool is_exact = true;
265 static const int radix = 2;
Howard Hinnanted569212011-05-26 18:23:59 +0000266 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return type(0);}
267 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return type(0);}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000268
269 static const int min_exponent = 0;
270 static const int min_exponent10 = 0;
271 static const int max_exponent = 0;
272 static const int max_exponent10 = 0;
273
274 static const bool has_infinity = false;
275 static const bool has_quiet_NaN = false;
276 static const bool has_signaling_NaN = false;
277 static const float_denorm_style has_denorm = denorm_absent;
278 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000279 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return type(0);}
280 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return type(0);}
281 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return type(0);}
282 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return type(0);}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000283
284 static const bool is_iec559 = false;
285 static const bool is_bounded = true;
286 static const bool is_modulo = false;
287
288 static const bool traps = false;
289 static const bool tinyness_before = false;
290 static const float_round_style round_style = round_toward_zero;
291};
292
293template <>
294class __libcpp_numeric_limits<float, true>
295{
296protected:
297 typedef float type;
298
299 static const bool is_specialized = true;
300
301 static const bool is_signed = true;
302 static const int digits = __FLT_MANT_DIG__;
303 static const int digits10 = __FLT_DIG__;
304 static const int max_digits10 = 2+(digits * 30103)/100000;
Howard Hinnanted569212011-05-26 18:23:59 +0000305 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __FLT_MIN__;}
306 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __FLT_MAX__;}
307 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return -max();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000308
309 static const bool is_integer = false;
310 static const bool is_exact = false;
311 static const int radix = __FLT_RADIX__;
Howard Hinnanted569212011-05-26 18:23:59 +0000312 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __FLT_EPSILON__;}
313 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return 0.5F;}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000314
315 static const int min_exponent = __FLT_MIN_EXP__;
316 static const int min_exponent10 = __FLT_MIN_10_EXP__;
317 static const int max_exponent = __FLT_MAX_EXP__;
318 static const int max_exponent10 = __FLT_MAX_10_EXP__;
319
320 static const bool has_infinity = true;
321 static const bool has_quiet_NaN = true;
322 static const bool has_signaling_NaN = true;
323 static const float_denorm_style has_denorm = denorm_present;
324 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000325 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __builtin_huge_valf();}
326 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __builtin_nanf("");}
327 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __builtin_nansf("");}
328 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __FLT_DENORM_MIN__;}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000329
330 static const bool is_iec559 = true;
331 static const bool is_bounded = true;
332 static const bool is_modulo = false;
333
334 static const bool traps = false;
335 static const bool tinyness_before = false;
336 static const float_round_style round_style = round_to_nearest;
337};
338
339template <>
340class __libcpp_numeric_limits<double, true>
341{
342protected:
343 typedef double type;
344
345 static const bool is_specialized = true;
346
347 static const bool is_signed = true;
348 static const int digits = __DBL_MANT_DIG__;
349 static const int digits10 = __DBL_DIG__;
350 static const int max_digits10 = 2+(digits * 30103)/100000;
Howard Hinnanted569212011-05-26 18:23:59 +0000351 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __DBL_MIN__;}
352 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __DBL_MAX__;}
353 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return -max();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000354
355 static const bool is_integer = false;
356 static const bool is_exact = false;
357 static const int radix = __FLT_RADIX__;
Howard Hinnanted569212011-05-26 18:23:59 +0000358 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __DBL_EPSILON__;}
359 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return 0.5;}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000360
361 static const int min_exponent = __DBL_MIN_EXP__;
362 static const int min_exponent10 = __DBL_MIN_10_EXP__;
363 static const int max_exponent = __DBL_MAX_EXP__;
364 static const int max_exponent10 = __DBL_MAX_10_EXP__;
365
366 static const bool has_infinity = true;
367 static const bool has_quiet_NaN = true;
368 static const bool has_signaling_NaN = true;
369 static const float_denorm_style has_denorm = denorm_present;
370 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000371 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __builtin_huge_val();}
372 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __builtin_nan("");}
373 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __builtin_nans("");}
374 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __DBL_DENORM_MIN__;}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000375
376 static const bool is_iec559 = true;
377 static const bool is_bounded = true;
378 static const bool is_modulo = false;
379
380 static const bool traps = false;
381 static const bool tinyness_before = false;
382 static const float_round_style round_style = round_to_nearest;
383};
384
385template <>
386class __libcpp_numeric_limits<long double, true>
387{
388protected:
389 typedef long double type;
390
391 static const bool is_specialized = true;
392
393 static const bool is_signed = true;
394 static const int digits = __LDBL_MANT_DIG__;
395 static const int digits10 = __LDBL_DIG__;
396 static const int max_digits10 = 2+(digits * 30103)/100000;
Howard Hinnanted569212011-05-26 18:23:59 +0000397 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __LDBL_MIN__;}
398 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __LDBL_MAX__;}
399 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return -max();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000400
401 static const bool is_integer = false;
402 static const bool is_exact = false;
403 static const int radix = __FLT_RADIX__;
Howard Hinnanted569212011-05-26 18:23:59 +0000404 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __LDBL_EPSILON__;}
405 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return 0.5;}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000406
407 static const int min_exponent = __LDBL_MIN_EXP__;
408 static const int min_exponent10 = __LDBL_MIN_10_EXP__;
409 static const int max_exponent = __LDBL_MAX_EXP__;
410 static const int max_exponent10 = __LDBL_MAX_10_EXP__;
411
412 static const bool has_infinity = true;
413 static const bool has_quiet_NaN = true;
414 static const bool has_signaling_NaN = true;
415 static const float_denorm_style has_denorm = denorm_present;
416 static const bool has_denorm_loss = false;
Howard Hinnanted569212011-05-26 18:23:59 +0000417 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __builtin_huge_vall();}
418 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __builtin_nanl("");}
419 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __builtin_nansl("");}
420 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __LDBL_DENORM_MIN__;}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000421
422#if (defined(__ppc__) || defined(__ppc64__))
423 static const bool is_iec559 = false;
424#else
425 static const bool is_iec559 = true;
426#endif
427 static const bool is_bounded = true;
428 static const bool is_modulo = false;
429
430 static const bool traps = false;
431 static const bool tinyness_before = false;
432 static const float_round_style round_style = round_to_nearest;
433};
434
435template <class _Tp>
Howard Hinnant82894812010-09-22 16:48:34 +0000436class _LIBCPP_VISIBLE numeric_limits
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000437 : private __libcpp_numeric_limits<typename remove_cv<_Tp>::type>
438{
439 typedef __libcpp_numeric_limits<typename remove_cv<_Tp>::type> __base;
440 typedef typename __base::type type;
441public:
442 static const bool is_specialized = __base::is_specialized;
Howard Hinnanted569212011-05-26 18:23:59 +0000443 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __base::min();}
444 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __base::max();}
445 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return __base::lowest();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000446
447 static const int digits = __base::digits;
448 static const int digits10 = __base::digits10;
449 static const int max_digits10 = __base::max_digits10;
450 static const bool is_signed = __base::is_signed;
451 static const bool is_integer = __base::is_integer;
452 static const bool is_exact = __base::is_exact;
453 static const int radix = __base::radix;
Howard Hinnanted569212011-05-26 18:23:59 +0000454 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __base::epsilon();}
455 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return __base::round_error();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000456
457 static const int min_exponent = __base::min_exponent;
458 static const int min_exponent10 = __base::min_exponent10;
459 static const int max_exponent = __base::max_exponent;
460 static const int max_exponent10 = __base::max_exponent10;
461
462 static const bool has_infinity = __base::has_infinity;
463 static const bool has_quiet_NaN = __base::has_quiet_NaN;
464 static const bool has_signaling_NaN = __base::has_signaling_NaN;
465 static const float_denorm_style has_denorm = __base::has_denorm;
466 static const bool has_denorm_loss = __base::has_denorm_loss;
Howard Hinnanted569212011-05-26 18:23:59 +0000467 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __base::infinity();}
468 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __base::quiet_NaN();}
469 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __base::signaling_NaN();}
470 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __base::denorm_min();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000471
472 static const bool is_iec559 = __base::is_iec559;
473 static const bool is_bounded = __base::is_bounded;
474 static const bool is_modulo = __base::is_modulo;
475
476 static const bool traps = __base::traps;
477 static const bool tinyness_before = __base::tinyness_before;
478 static const float_round_style round_style = __base::round_style;
479};
480
481template <class _Tp>
Howard Hinnant82894812010-09-22 16:48:34 +0000482class _LIBCPP_VISIBLE numeric_limits<const _Tp>
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000483 : private numeric_limits<_Tp>
484{
485 typedef numeric_limits<_Tp> __base;
486 typedef _Tp type;
487public:
488 static const bool is_specialized = __base::is_specialized;
Howard Hinnanted569212011-05-26 18:23:59 +0000489 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __base::min();}
490 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __base::max();}
491 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return __base::lowest();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000492
493 static const int digits = __base::digits;
494 static const int digits10 = __base::digits10;
495 static const int max_digits10 = __base::max_digits10;
496 static const bool is_signed = __base::is_signed;
497 static const bool is_integer = __base::is_integer;
498 static const bool is_exact = __base::is_exact;
499 static const int radix = __base::radix;
Howard Hinnanted569212011-05-26 18:23:59 +0000500 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __base::epsilon();}
501 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return __base::round_error();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000502
503 static const int min_exponent = __base::min_exponent;
504 static const int min_exponent10 = __base::min_exponent10;
505 static const int max_exponent = __base::max_exponent;
506 static const int max_exponent10 = __base::max_exponent10;
507
508 static const bool has_infinity = __base::has_infinity;
509 static const bool has_quiet_NaN = __base::has_quiet_NaN;
510 static const bool has_signaling_NaN = __base::has_signaling_NaN;
511 static const float_denorm_style has_denorm = __base::has_denorm;
512 static const bool has_denorm_loss = __base::has_denorm_loss;
Howard Hinnanted569212011-05-26 18:23:59 +0000513 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __base::infinity();}
514 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __base::quiet_NaN();}
515 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __base::signaling_NaN();}
516 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __base::denorm_min();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000517
518 static const bool is_iec559 = __base::is_iec559;
519 static const bool is_bounded = __base::is_bounded;
520 static const bool is_modulo = __base::is_modulo;
521
522 static const bool traps = __base::traps;
523 static const bool tinyness_before = __base::tinyness_before;
524 static const float_round_style round_style = __base::round_style;
525};
526
527template <class _Tp>
Howard Hinnant82894812010-09-22 16:48:34 +0000528class _LIBCPP_VISIBLE numeric_limits<volatile _Tp>
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000529 : private numeric_limits<_Tp>
530{
531 typedef numeric_limits<_Tp> __base;
532 typedef _Tp type;
533public:
534 static const bool is_specialized = __base::is_specialized;
Howard Hinnanted569212011-05-26 18:23:59 +0000535 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __base::min();}
536 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __base::max();}
537 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return __base::lowest();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000538
539 static const int digits = __base::digits;
540 static const int digits10 = __base::digits10;
541 static const int max_digits10 = __base::max_digits10;
542 static const bool is_signed = __base::is_signed;
543 static const bool is_integer = __base::is_integer;
544 static const bool is_exact = __base::is_exact;
545 static const int radix = __base::radix;
Howard Hinnanted569212011-05-26 18:23:59 +0000546 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __base::epsilon();}
547 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return __base::round_error();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000548
549 static const int min_exponent = __base::min_exponent;
550 static const int min_exponent10 = __base::min_exponent10;
551 static const int max_exponent = __base::max_exponent;
552 static const int max_exponent10 = __base::max_exponent10;
553
554 static const bool has_infinity = __base::has_infinity;
555 static const bool has_quiet_NaN = __base::has_quiet_NaN;
556 static const bool has_signaling_NaN = __base::has_signaling_NaN;
557 static const float_denorm_style has_denorm = __base::has_denorm;
558 static const bool has_denorm_loss = __base::has_denorm_loss;
Howard Hinnanted569212011-05-26 18:23:59 +0000559 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __base::infinity();}
560 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __base::quiet_NaN();}
561 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __base::signaling_NaN();}
562 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __base::denorm_min();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000563
564 static const bool is_iec559 = __base::is_iec559;
565 static const bool is_bounded = __base::is_bounded;
566 static const bool is_modulo = __base::is_modulo;
567
568 static const bool traps = __base::traps;
569 static const bool tinyness_before = __base::tinyness_before;
570 static const float_round_style round_style = __base::round_style;
571};
572
573template <class _Tp>
Howard Hinnant82894812010-09-22 16:48:34 +0000574class _LIBCPP_VISIBLE numeric_limits<const volatile _Tp>
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000575 : private numeric_limits<_Tp>
576{
577 typedef numeric_limits<_Tp> __base;
578 typedef _Tp type;
579public:
580 static const bool is_specialized = __base::is_specialized;
Howard Hinnanted569212011-05-26 18:23:59 +0000581 _LIBCPP_INLINE_VISIBILITY static type min() _NOEXCEPT {return __base::min();}
582 _LIBCPP_INLINE_VISIBILITY static type max() _NOEXCEPT {return __base::max();}
583 _LIBCPP_INLINE_VISIBILITY static type lowest() _NOEXCEPT {return __base::lowest();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000584
585 static const int digits = __base::digits;
586 static const int digits10 = __base::digits10;
587 static const int max_digits10 = __base::max_digits10;
588 static const bool is_signed = __base::is_signed;
589 static const bool is_integer = __base::is_integer;
590 static const bool is_exact = __base::is_exact;
591 static const int radix = __base::radix;
Howard Hinnanted569212011-05-26 18:23:59 +0000592 _LIBCPP_INLINE_VISIBILITY static type epsilon() _NOEXCEPT {return __base::epsilon();}
593 _LIBCPP_INLINE_VISIBILITY static type round_error() _NOEXCEPT {return __base::round_error();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000594
595 static const int min_exponent = __base::min_exponent;
596 static const int min_exponent10 = __base::min_exponent10;
597 static const int max_exponent = __base::max_exponent;
598 static const int max_exponent10 = __base::max_exponent10;
599
600 static const bool has_infinity = __base::has_infinity;
601 static const bool has_quiet_NaN = __base::has_quiet_NaN;
602 static const bool has_signaling_NaN = __base::has_signaling_NaN;
603 static const float_denorm_style has_denorm = __base::has_denorm;
604 static const bool has_denorm_loss = __base::has_denorm_loss;
Howard Hinnanted569212011-05-26 18:23:59 +0000605 _LIBCPP_INLINE_VISIBILITY static type infinity() _NOEXCEPT {return __base::infinity();}
606 _LIBCPP_INLINE_VISIBILITY static type quiet_NaN() _NOEXCEPT {return __base::quiet_NaN();}
607 _LIBCPP_INLINE_VISIBILITY static type signaling_NaN() _NOEXCEPT {return __base::signaling_NaN();}
608 _LIBCPP_INLINE_VISIBILITY static type denorm_min() _NOEXCEPT {return __base::denorm_min();}
Howard Hinnantbc8d3f92010-05-11 19:42:16 +0000609
610 static const bool is_iec559 = __base::is_iec559;
611 static const bool is_bounded = __base::is_bounded;
612 static const bool is_modulo = __base::is_modulo;
613
614 static const bool traps = __base::traps;
615 static const bool tinyness_before = __base::tinyness_before;
616 static const float_round_style round_style = __base::round_style;
617};
618
619_LIBCPP_END_NAMESPACE_STD
620
621#endif // _LIBCPP_LIMITS