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 32 namespace chrono { 33 34 template <class _Rep, class _Period = ratio<1> > 35 class _LIBCPP_TEMPLATE_VIS duration; 36 37 template <class _Tp> 38 struct __is_duration : false_type {}; 39 40 template <class _Rep, class _Period> 41 struct __is_duration<duration<_Rep, _Period> > : true_type {}; 42 43 template <class _Rep, class _Period> 44 struct __is_duration<const duration<_Rep, _Period> > : true_type {}; 45 46 template <class _Rep, class _Period> 47 struct __is_duration<volatile duration<_Rep, _Period> > : true_type {}; 48 49 template <class _Rep, class _Period> 50 struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {}; 51 52 } // namespace chrono 53 54 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 55 struct _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 60 namespace chrono { 61 62 // duration_cast 63 64 template <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> 69 struct __duration_cast; 70 71 template <class _FromDuration, class _ToDuration, class _Period> 72 struct __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 78 template <class _FromDuration, class _ToDuration, class _Period> 79 struct __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 87 template <class _FromDuration, class _ToDuration, class _Period> 88 struct __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 96 template <class _FromDuration, class _ToDuration, class _Period> 97 struct __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 }; 104 105 template <class _ToDuration, class _Rep, class _Period, __enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 106 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration duration_cast(const duration<_Rep, _Period>& __fd) { 107 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd); 108 } 109 110 template <class _Rep> 111 struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {}; 112 113 #if _LIBCPP_STD_VER >= 17 114 template <class _Rep> 115 inline constexpr bool treat_as_floating_point_v = treat_as_floating_point<_Rep>::value; 116 #endif 117 118 template <class _Rep> 119 struct _LIBCPP_TEMPLATE_VIS duration_values { 120 public: 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 >= 17 127 template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 128 inline _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 } 134 135 template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 136 inline _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 } 142 143 template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0> 144 inline _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 158 159 template <class _Rep, class _Period> 160 class _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 }; 191 192 public: 193 typedef _Rep rep; 194 typedef typename _Period::type period; 195 196 private: 197 rep __rep_; 198 199 public: 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 }; 283 284 typedef duration<long long, nano> nanoseconds; 285 typedef duration<long long, micro> microseconds; 286 typedef duration<long long, milli> milliseconds; 287 typedef duration<long long > seconds; 288 typedef duration< long, ratio< 60> > minutes; 289 typedef duration< long, ratio<3600> > hours; 290 #if _LIBCPP_STD_VER >= 20 291 typedef duration< int, ratio_multiply<ratio<24>, hours::period>> days; 292 typedef duration< int, ratio_multiply<ratio<7>, days::period>> weeks; 293 typedef duration< int, ratio_multiply<ratio<146097, 400>, days::period>> years; 294 typedef duration< int, ratio_divide<years::period, ratio<12>>> months; 295 #endif 296 // Duration == 297 298 template <class _LhsDuration, class _RhsDuration> 299 struct __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 }; 305 306 template <class _LhsDuration> 307 struct __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 }; 312 313 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 314 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 315 operator==(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 != 322 323 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 324 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 325 operator!=(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 < 332 333 template <class _LhsDuration, class _RhsDuration> 334 struct __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 }; 340 341 template <class _LhsDuration> 342 struct __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 }; 347 348 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 349 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 350 operator<(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 > 355 356 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 357 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 358 operator>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 359 return __rhs < __lhs; 360 } 361 362 // Duration <= 363 364 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 365 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 366 operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 367 return !(__rhs < __lhs); 368 } 369 370 // Duration >= 371 372 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 373 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool 374 operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { 375 return !(__lhs < __rhs); 376 } 377 378 #if _LIBCPP_STD_VER >= 20 379 380 template <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 383 operator<=>(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 + 391 392 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 393 inline _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 - 401 402 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 403 inline _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 * 411 412 template <class _Rep1, 413 class _Period, 414 class _Rep2, 415 __enable_if_t<is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0> 416 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 417 operator*(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 } 422 423 template <class _Rep1, 424 class _Period, 425 class _Rep2, 426 __enable_if_t<is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0> 427 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 428 operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) { 429 return __d * __s; 430 } 431 432 // Duration / 433 434 template <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> 440 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 441 operator/(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 } 446 447 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 448 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<_Rep1, _Rep2>::type 449 operator/(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 % 455 456 template <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> 462 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period> 463 operator%(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 } 468 469 template <class _Rep1, class _Period1, class _Rep2, class _Period2> 470 inline _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] 482 inline namespace literals { 483 inline 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 535 536 namespace chrono { // hoist the literals into namespace std::chrono 537 using 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