1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___CHRONO_DURATION_H 11#define _LIBCPP___CHRONO_DURATION_H 12 13#include <__compare/ordering.h> 14#include <__compare/three_way_comparable.h> 15#include <__config> 16#include <__type_traits/common_type.h> 17#include <__type_traits/enable_if.h> 18#include <__type_traits/is_convertible.h> 19#include <__type_traits/is_floating_point.h> 20#include <limits> 21#include <ratio> 22 23#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 24# pragma GCC system_header 25#endif 26 27_LIBCPP_PUSH_MACROS 28#include <__undef_macros> 29 30_LIBCPP_BEGIN_NAMESPACE_STD 31 32namespace chrono { 33 34template <class _Rep, class _Period = ratio<1> > 35class _LIBCPP_TEMPLATE_VIS duration; 36 37template <class _Tp> 38struct __is_duration : false_type {}; 39 40template <class _Rep, class _Period> 41struct __is_duration<duration<_Rep, _Period> > : true_type {}; 42 43template <class _Rep, class _Period> 44struct __is_duration<const duration<_Rep, _Period> > : true_type {}; 45 46template <class _Rep, class _Period> 47struct __is_duration<volatile duration<_Rep, _Period> > : true_type {}; 48 49template <class _Rep, class _Period> 50struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {}; 51 52} // namespace chrono 53 54template <class _Rep1, class _Period1, class _Rep2, class _Period2> 55struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>, chrono::duration<_Rep2, _Period2> > { 56 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type, typename __ratio_gcd<_Period1, _Period2>::type> 57 type; 58}; 59 60namespace chrono { 61 62// duration_cast 63 64template <class _FromDuration, 65 class _ToDuration, 66 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type, 67 bool = _Period::num == 1, 68 bool = _Period::den == 1> 69struct __duration_cast; 70 71template <class _FromDuration, class _ToDuration, class _Period> 72struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true> { 73 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const { 74 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count())); 75 } 76}; 77 78template <class _FromDuration, class _ToDuration, class _Period> 79struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false> { 80 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const { 81 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 82 return _ToDuration( 83 static_cast<typename _ToDuration::rep>(static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den))); 84 } 85}; 86 87template <class _FromDuration, class _ToDuration, class _Period> 88struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true> { 89 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const { 90 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 91 return _ToDuration( 92 static_cast<typename _ToDuration::rep>(static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num))); 93 } 94}; 95 96template <class _FromDuration, class _ToDuration, class _Period> 97struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false> { 98 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const { 99 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 100 return _ToDuration(static_cast<typename _ToDuration::rep>( 101 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num) / static_cast<_Ct>(_Period::den))); 102 } 103}; 104 105template <class _ToDuration, class _Rep, class _Period, __enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 106inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration duration_cast(const duration<_Rep, _Period>& __fd) { 107 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd); 108} 109 110template <class _Rep> 111struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {}; 112 113#if _LIBCPP_STD_VER >= 17 114template <class _Rep> 115inline constexpr bool treat_as_floating_point_v = treat_as_floating_point<_Rep>::value; 116#endif 117 118template <class _Rep> 119struct _LIBCPP_TEMPLATE_VIS duration_values { 120public: 121 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT { return _Rep(0); } 122 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR _Rep max() _NOEXCEPT { return numeric_limits<_Rep>::max(); } 123 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR _Rep min() _NOEXCEPT { return numeric_limits<_Rep>::lowest(); } 124}; 125 126#if _LIBCPP_STD_VER >= 17 127template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 128inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration floor(const duration<_Rep, _Period>& __d) { 129 _ToDuration __t = chrono::duration_cast<_ToDuration>(__d); 130 if (__t > __d) 131 __t = __t - _ToDuration{1}; 132 return __t; 133} 134 135template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 136inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration ceil(const duration<_Rep, _Period>& __d) { 137 _ToDuration __t = chrono::duration_cast<_ToDuration>(__d); 138 if (__t < __d) 139 __t = __t + _ToDuration{1}; 140 return __t; 141} 142 143template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 144inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration round(const duration<_Rep, _Period>& __d) { 145 _ToDuration __lower = chrono::floor<_ToDuration>(__d); 146 _ToDuration __upper = __lower + _ToDuration{1}; 147 auto __lower_diff = __d - __lower; 148 auto __upper_diff = __upper - __d; 149 if (__lower_diff < __upper_diff) 150 return __lower; 151 if (__lower_diff > __upper_diff) 152 return __upper; 153 return __lower.count() & 1 ? __upper : __lower; 154} 155#endif 156 157// duration 158 159template <class _Rep, class _Period> 160class _LIBCPP_TEMPLATE_VIS duration { 161 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration"); 162 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio"); 163 static_assert(_Period::num > 0, "duration period must be positive"); 164 165 template <class _R1, class _R2> 166 struct __no_overflow { 167 private: 168 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value; 169 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value; 170 static const intmax_t __n1 = _R1::num / __gcd_n1_n2; 171 static const intmax_t __d1 = _R1::den / __gcd_d1_d2; 172 static const intmax_t __n2 = _R2::num / __gcd_n1_n2; 173 static const intmax_t __d2 = _R2::den / __gcd_d1_d2; 174 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1); 175 176 template <intmax_t _Xp, intmax_t _Yp, bool __overflow> 177 struct __mul // __overflow == false 178 { 179 static const intmax_t value = _Xp * _Yp; 180 }; 181 182 template <intmax_t _Xp, intmax_t _Yp> 183 struct __mul<_Xp, _Yp, true> { 184 static const intmax_t value = 1; 185 }; 186 187 public: 188 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1); 189 typedef ratio<__mul<__n1, __d2, !value>::value, __mul<__n2, __d1, !value>::value> type; 190 }; 191 192public: 193 typedef _Rep rep; 194 typedef typename _Period::type period; 195 196private: 197 rep __rep_; 198 199public: 200#ifndef _LIBCPP_CXX03_LANG 201 constexpr duration() = default; 202#else 203 _LIBCPP_HIDE_FROM_ABI duration() {} 204#endif 205 206 template <class _Rep2, 207 __enable_if_t<is_convertible<const _Rep2&, rep>::value && 208 (treat_as_floating_point<rep>::value || !treat_as_floating_point<_Rep2>::value), 209 int> = 0> 210 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR explicit duration(const _Rep2& __r) : __rep_(__r) {} 211 212 // conversions 213 template <class _Rep2, 214 class _Period2, 215 __enable_if_t<__no_overflow<_Period2, period>::value && (treat_as_floating_point<rep>::value || 216 (__no_overflow<_Period2, period>::type::den == 1 && 217 !treat_as_floating_point<_Rep2>::value)), 218 int> = 0> 219 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration(const duration<_Rep2, _Period2>& __d) 220 : __rep_(chrono::duration_cast<duration>(__d).count()) {} 221 222 // observer 223 224 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR rep count() const { return __rep_; } 225 226 // arithmetic 227 228 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<duration>::type operator+() const { 229 return typename common_type<duration>::type(*this); 230 } 231 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<duration>::type operator-() const { 232 return typename common_type<duration>::type(-__rep_); 233 } 234 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator++() { 235 ++__rep_; 236 return *this; 237 } 238 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration operator++(int) { return duration(__rep_++); } 239 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator--() { 240 --__rep_; 241 return *this; 242 } 243 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration operator--(int) { return duration(__rep_--); } 244 245 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator+=(const duration& __d) { 246 __rep_ += __d.count(); 247 return *this; 248 } 249 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator-=(const duration& __d) { 250 __rep_ -= __d.count(); 251 return *this; 252 } 253 254 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator*=(const rep& __rhs) { 255 __rep_ *= __rhs; 256 return *this; 257 } 258 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator/=(const rep& __rhs) { 259 __rep_ /= __rhs; 260 return *this; 261 } 262 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator%=(const rep& __rhs) { 263 __rep_ %= __rhs; 264 return *this; 265 } 266 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator%=(const duration& __rhs) { 267 __rep_ %= __rhs.count(); 268 return *this; 269 } 270 271 // special values 272 273 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR duration zero() _NOEXCEPT { 274 return duration(duration_values<rep>::zero()); 275 } 276 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR duration min() _NOEXCEPT { 277 return duration(duration_values<rep>::min()); 278 } 279 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR duration max() _NOEXCEPT { 280 return duration(duration_values<rep>::max()); 281 } 282}; 283 284typedef duration<long long, nano> nanoseconds; 285typedef duration<long long, micro> microseconds; 286typedef duration<long long, milli> milliseconds; 287typedef duration<long long > seconds; 288typedef duration< long, ratio< 60> > minutes; 289typedef duration< long, ratio<3600> > hours; 290#if _LIBCPP_STD_VER >= 20 291typedef duration< int, ratio_multiply<ratio<24>, hours::period>> days; 292typedef duration< int, ratio_multiply<ratio<7>, days::period>> weeks; 293typedef duration< int, ratio_multiply<ratio<146097, 400>, days::period>> years; 294typedef duration< int, ratio_divide<years::period, ratio<12>>> months; 295#endif 296// Duration == 297 298template <class _LhsDuration, class _RhsDuration> 299struct __duration_eq { 300 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const { 301 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 302 return _Ct(__lhs).count() == _Ct(__rhs).count(); 303 } 304}; 305 306template <class _LhsDuration> 307struct __duration_eq<_LhsDuration, _LhsDuration> { 308 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const { 309 return __lhs.count() == __rhs.count(); 310 } 311}; 312 313template <class _Rep1, class _Period1, class _Rep2, class _Period2> 314inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 315operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 316 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 317} 318 319#if _LIBCPP_STD_VER <= 17 320 321// Duration != 322 323template <class _Rep1, class _Period1, class _Rep2, class _Period2> 324inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 325operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 326 return !(__lhs == __rhs); 327} 328 329#endif // _LIBCPP_STD_VER <= 17 330 331// Duration < 332 333template <class _LhsDuration, class _RhsDuration> 334struct __duration_lt { 335 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const { 336 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 337 return _Ct(__lhs).count() < _Ct(__rhs).count(); 338 } 339}; 340 341template <class _LhsDuration> 342struct __duration_lt<_LhsDuration, _LhsDuration> { 343 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const { 344 return __lhs.count() < __rhs.count(); 345 } 346}; 347 348template <class _Rep1, class _Period1, class _Rep2, class _Period2> 349inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 350operator<(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 351 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 352} 353 354// Duration > 355 356template <class _Rep1, class _Period1, class _Rep2, class _Period2> 357inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 358operator>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 359 return __rhs < __lhs; 360} 361 362// Duration <= 363 364template <class _Rep1, class _Period1, class _Rep2, class _Period2> 365inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 366operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 367 return !(__rhs < __lhs); 368} 369 370// Duration >= 371 372template <class _Rep1, class _Period1, class _Rep2, class _Period2> 373inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 374operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 375 return !(__lhs < __rhs); 376} 377 378#if _LIBCPP_STD_VER >= 20 379 380template <class _Rep1, class _Period1, class _Rep2, class _Period2> 381 requires three_way_comparable<common_type_t<_Rep1, _Rep2>> 382_LIBCPP_HIDE_FROM_ABI constexpr auto 383operator<=>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 384 using _Ct = common_type_t<duration<_Rep1, _Period1>, duration<_Rep2, _Period2>>; 385 return _Ct(__lhs).count() <=> _Ct(__rhs).count(); 386} 387 388#endif // _LIBCPP_STD_VER >= 20 389 390// Duration + 391 392template <class _Rep1, class _Period1, class _Rep2, class _Period2> 393inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR 394 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 395 operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 396 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 397 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count()); 398} 399 400// Duration - 401 402template <class _Rep1, class _Period1, class _Rep2, class _Period2> 403inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR 404 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 405 operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 406 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 407 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count()); 408} 409 410// Duration * 411 412template <class _Rep1, 413 class _Period, 414 class _Rep2, 415 __enable_if_t<is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0> 416inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 417operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) { 418 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 419 typedef duration<_Cr, _Period> _Cd; 420 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s)); 421} 422 423template <class _Rep1, 424 class _Period, 425 class _Rep2, 426 __enable_if_t<is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0> 427inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 428operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) { 429 return __d * __s; 430} 431 432// Duration / 433 434template <class _Rep1, 435 class _Period, 436 class _Rep2, 437 __enable_if_t<!__is_duration<_Rep2>::value && 438 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 439 int> = 0> 440inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 441operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) { 442 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 443 typedef duration<_Cr, _Period> _Cd; 444 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s)); 445} 446 447template <class _Rep1, class _Period1, class _Rep2, class _Period2> 448inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<_Rep1, _Rep2>::type 449operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 450 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct; 451 return _Ct(__lhs).count() / _Ct(__rhs).count(); 452} 453 454// Duration % 455 456template <class _Rep1, 457 class _Period, 458 class _Rep2, 459 __enable_if_t<!__is_duration<_Rep2>::value && 460 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 461 int> = 0> 462inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 463operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) { 464 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 465 typedef duration<_Cr, _Period> _Cd; 466 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s)); 467} 468 469template <class _Rep1, class _Period1, class _Rep2, class _Period2> 470inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR 471 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 472 operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 473 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 474 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 475 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count())); 476} 477 478} // namespace chrono 479 480#if _LIBCPP_STD_VER >= 14 481// Suffixes for duration literals [time.duration.literals] 482inline namespace literals { 483inline namespace chrono_literals { 484 485_LIBCPP_HIDE_FROM_ABI constexpr chrono::hours operator""h(unsigned long long __h) { 486 return chrono::hours(static_cast<chrono::hours::rep>(__h)); 487} 488 489_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, ratio<3600, 1>> operator""h(long double __h) { 490 return chrono::duration<long double, ratio<3600, 1>>(__h); 491} 492 493_LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes operator""min(unsigned long long __m) { 494 return chrono::minutes(static_cast<chrono::minutes::rep>(__m)); 495} 496 497_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, ratio<60, 1>> operator""min(long double __m) { 498 return chrono::duration<long double, ratio<60, 1>>(__m); 499} 500 501_LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds operator""s(unsigned long long __s) { 502 return chrono::seconds(static_cast<chrono::seconds::rep>(__s)); 503} 504 505_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double> operator""s(long double __s) { 506 return chrono::duration<long double>(__s); 507} 508 509_LIBCPP_HIDE_FROM_ABI constexpr chrono::milliseconds operator""ms(unsigned long long __ms) { 510 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms)); 511} 512 513_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, milli> operator""ms(long double __ms) { 514 return chrono::duration<long double, milli>(__ms); 515} 516 517_LIBCPP_HIDE_FROM_ABI constexpr chrono::microseconds operator""us(unsigned long long __us) { 518 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us)); 519} 520 521_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, micro> operator""us(long double __us) { 522 return chrono::duration<long double, micro>(__us); 523} 524 525_LIBCPP_HIDE_FROM_ABI constexpr chrono::nanoseconds operator""ns(unsigned long long __ns) { 526 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns)); 527} 528 529_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, nano> operator""ns(long double __ns) { 530 return chrono::duration<long double, nano>(__ns); 531} 532 533} // namespace chrono_literals 534} // namespace literals 535 536namespace chrono { // hoist the literals into namespace std::chrono 537using namespace literals::chrono_literals; 538} // namespace chrono 539 540#endif // _LIBCPP_STD_VER >= 14 541 542_LIBCPP_END_NAMESPACE_STD 543 544_LIBCPP_POP_MACROS 545 546#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 547# include <type_traits> 548#endif 549 550#endif // _LIBCPP___CHRONO_DURATION_H 551