projects / thirdparty / gcc.git / blame
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| 15e38d0d CF |
1 | // <chrono> -*- C++ -*- |
| 2 | ||
| 99dee823 | 3 | // Copyright (C) 2008-2021 Free Software Foundation, Inc. |
| 15e38d0d CF |
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 | |
| 748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
| 15e38d0d CF |
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 | ||
| 748086b7 JJ |
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. | |
| 15e38d0d | 19 | |
| 748086b7 JJ |
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/>. | |
| 15e38d0d CF |
24 | |
| 25 | /** @file include/chrono | |
| 26 | * This is a Standard C++ Library header. | |
| c34d3fd3 | 27 | * @ingroup chrono |
| 15e38d0d CF |
28 | */ |
| 29 | ||
| 30 | #ifndef _GLIBCXX_CHRONO | |
| 31 | #define _GLIBCXX_CHRONO 1 | |
| 32 | ||
| 33 | #pragma GCC system_header | |
| 34 | ||
| 734f5023 | 35 | #if __cplusplus < 201103L |
| ab65a4c7 | 36 | # include <bits/c++0x_warning.h> |
| 15e38d0d CF |
37 | #else |
| 38 | ||
| 15e38d0d CF |
39 | #include <ratio> |
| 40 | #include <type_traits> | |
| 41 | #include <limits> | |
| 42 | #include <ctime> | |
| 1c9f675f | 43 | #include <bits/parse_numbers.h> // for literals support. |
| bf1fc37b JW |
44 | #if __cplusplus > 201703L |
| 45 | # include <concepts> | |
| 27c17177 | 46 | # include <compare> |
| bf1fc37b | 47 | #endif |
| 15e38d0d | 48 | |
| 12ffa228 BK |
49 | namespace std _GLIBCXX_VISIBILITY(default) |
| 50 | { | |
| 4a15d842 FD |
51 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 52 | ||
| bf1fc37b JW |
53 | #if __cplusplus >= 201703L |
| 54 | namespace filesystem { struct __file_clock; }; | |
| 55 | #endif | |
| 56 | ||
| 5b9daa7e BK |
57 | /** |
| 58 | * @defgroup chrono Time | |
| 59 | * @ingroup utilities | |
| 60 | * | |
| 61 | * Classes and functions for time. | |
| 62 | * @{ | |
| 63 | */ | |
| 64 | ||
| 65 | /** @namespace std::chrono | |
| 19aaf814 | 66 | * @brief ISO C++ 2011 namespace for date and time utilities |
| 5b9daa7e | 67 | */ |
| 15e38d0d CF |
68 | namespace chrono |
| 69 | { | |
| 70 | template<typename _Rep, typename _Period = ratio<1>> | |
| 71 | struct duration; | |
| 72 | ||
| 16684e9c | 73 | template<typename _Clock, typename _Dur = typename _Clock::duration> |
| 15e38d0d CF |
74 | struct time_point; |
| 75 | } | |
| 76 | ||
| b3618b71 | 77 | // 20.11.4.3 specialization of common_type (for duration, sfinae-friendly) |
| 33ac58d5 | 78 | |
| c34d3fd3 JW |
79 | /// @cond undocumented |
| 80 | ||
| f61a12b3 JW |
81 | template<typename _CT, typename _Period1, typename _Period2, typename = void> |
| 82 | struct __duration_common_type | |
| 83 | { }; | |
| 84 | ||
| b3618b71 | 85 | template<typename _CT, typename _Period1, typename _Period2> |
| f61a12b3 JW |
86 | struct __duration_common_type<_CT, _Period1, _Period2, |
| 87 | __void_t<typename _CT::type>> | |
| 15e38d0d | 88 | { |
| 16684e9c | 89 | private: |
| f61a12b3 JW |
90 | using __gcd_num = __static_gcd<_Period1::num, _Period2::num>; |
| 91 | using __gcd_den = __static_gcd<_Period1::den, _Period2::den>; | |
| 92 | using __cr = typename _CT::type; | |
| 93 | using __r = ratio<__gcd_num::value, | |
| 94 | (_Period1::den / __gcd_den::value) * _Period2::den>; | |
| 95 | ||
| 16684e9c | 96 | public: |
| 82030d51 | 97 | using type = chrono::duration<__cr, typename __r::type>; |
| 15e38d0d | 98 | }; |
| 94a86be0 | 99 | |
| c34d3fd3 JW |
100 | /// @endcond |
| 101 | ||
| 102 | /// Specialization of common_type for chrono::duration types. | |
| 103 | /// @relates duration | |
| b3618b71 DK |
104 | template<typename _Rep1, typename _Period1, typename _Rep2, typename _Period2> |
| 105 | struct common_type<chrono::duration<_Rep1, _Period1>, | |
| f61a12b3 | 106 | chrono::duration<_Rep2, _Period2>> |
| 82030d51 JW |
107 | : __duration_common_type<common_type<_Rep1, _Rep2>, |
| 108 | typename _Period1::type, | |
| 109 | typename _Period2::type> | |
| b3618b71 DK |
110 | { }; |
| 111 | ||
| 82030d51 JW |
112 | /// Specialization of common_type for two identical chrono::duration types. |
| 113 | /// @relates duration | |
| 114 | template<typename _Rep, typename _Period> | |
| 115 | struct common_type<chrono::duration<_Rep, _Period>, | |
| 116 | chrono::duration<_Rep, _Period>> | |
| f2f48b68 JW |
117 | { |
| 118 | using type = chrono::duration<typename common_type<_Rep>::type, | |
| 119 | typename _Period::type>; | |
| 120 | }; | |
| 82030d51 JW |
121 | |
| 122 | /// Specialization of common_type for one chrono::duration type. | |
| 123 | /// @relates duration | |
| 124 | template<typename _Rep, typename _Period> | |
| 125 | struct common_type<chrono::duration<_Rep, _Period>> | |
| f2f48b68 JW |
126 | { |
| 127 | using type = chrono::duration<typename common_type<_Rep>::type, | |
| 128 | typename _Period::type>; | |
| 129 | }; | |
| 82030d51 | 130 | |
| b3618b71 | 131 | // 20.11.4.3 specialization of common_type (for time_point, sfinae-friendly) |
| 33ac58d5 | 132 | |
| c34d3fd3 JW |
133 | /// @cond undocumented |
| 134 | ||
| f61a12b3 JW |
135 | template<typename _CT, typename _Clock, typename = void> |
| 136 | struct __timepoint_common_type | |
| 137 | { }; | |
| 138 | ||
| b3618b71 | 139 | template<typename _CT, typename _Clock> |
| f61a12b3 | 140 | struct __timepoint_common_type<_CT, _Clock, __void_t<typename _CT::type>> |
| b3618b71 | 141 | { |
| f61a12b3 | 142 | using type = chrono::time_point<_Clock, typename _CT::type>; |
| 15e38d0d | 143 | }; |
| b3618b71 | 144 | |
| c34d3fd3 JW |
145 | /// @endcond |
| 146 | ||
| 147 | /// Specialization of common_type for chrono::time_point types. | |
| 148 | /// @relates time_point | |
| b3618b71 DK |
149 | template<typename _Clock, typename _Duration1, typename _Duration2> |
| 150 | struct common_type<chrono::time_point<_Clock, _Duration1>, | |
| f61a12b3 JW |
151 | chrono::time_point<_Clock, _Duration2>> |
| 152 | : __timepoint_common_type<common_type<_Duration1, _Duration2>, _Clock> | |
| b3618b71 DK |
153 | { }; |
| 154 | ||
| 82030d51 JW |
155 | /// Specialization of common_type for two identical chrono::time_point types. |
| 156 | /// @relates time_point | |
| 157 | template<typename _Clock, typename _Duration> | |
| 158 | struct common_type<chrono::time_point<_Clock, _Duration>, | |
| 159 | chrono::time_point<_Clock, _Duration>> | |
| 160 | { using type = chrono::time_point<_Clock, _Duration>; }; | |
| 161 | ||
| 162 | /// Specialization of common_type for one chrono::time_point type. | |
| 163 | /// @relates time_point | |
| 164 | template<typename _Clock, typename _Duration> | |
| 165 | struct common_type<chrono::time_point<_Clock, _Duration>> | |
| 166 | { using type = chrono::time_point<_Clock, _Duration>; }; | |
| 167 | ||
| c34d3fd3 JW |
168 | // @} group chrono |
| 169 | ||
| 94a86be0 | 170 | namespace chrono |
| 15e38d0d | 171 | { |
| c34d3fd3 JW |
172 | /// @addtogroup chrono |
| 173 | /// @{ | |
| 174 | ||
| 175 | /// @cond undocumented | |
| 176 | ||
| 5b9daa7e | 177 | // Primary template for duration_cast impl. |
| 16684e9c | 178 | template<typename _ToDur, typename _CF, typename _CR, |
| 94a86be0 | 179 | bool _NumIsOne = false, bool _DenIsOne = false> |
| 15e38d0d CF |
180 | struct __duration_cast_impl |
| 181 | { | |
| 94a86be0 | 182 | template<typename _Rep, typename _Period> |
| 16684e9c | 183 | static constexpr _ToDur |
| 94a86be0 BK |
184 | __cast(const duration<_Rep, _Period>& __d) |
| 185 | { | |
| 16684e9c BK |
186 | typedef typename _ToDur::rep __to_rep; |
| 187 | return _ToDur(static_cast<__to_rep>(static_cast<_CR>(__d.count()) | |
| 94a86be0 BK |
188 | * static_cast<_CR>(_CF::num) |
| 189 | / static_cast<_CR>(_CF::den))); | |
| 190 | } | |
| 15e38d0d CF |
191 | }; |
| 192 | ||
| 16684e9c BK |
193 | template<typename _ToDur, typename _CF, typename _CR> |
| 194 | struct __duration_cast_impl<_ToDur, _CF, _CR, true, true> | |
| 15e38d0d | 195 | { |
| 94a86be0 | 196 | template<typename _Rep, typename _Period> |
| 16684e9c | 197 | static constexpr _ToDur |
| 94a86be0 BK |
198 | __cast(const duration<_Rep, _Period>& __d) |
| 199 | { | |
| 16684e9c BK |
200 | typedef typename _ToDur::rep __to_rep; |
| 201 | return _ToDur(static_cast<__to_rep>(__d.count())); | |
| 94a86be0 | 202 | } |
| 15e38d0d CF |
203 | }; |
| 204 | ||
| 16684e9c BK |
205 | template<typename _ToDur, typename _CF, typename _CR> |
| 206 | struct __duration_cast_impl<_ToDur, _CF, _CR, true, false> | |
| 15e38d0d | 207 | { |
| 94a86be0 | 208 | template<typename _Rep, typename _Period> |
| 16684e9c | 209 | static constexpr _ToDur |
| 94a86be0 BK |
210 | __cast(const duration<_Rep, _Period>& __d) |
| 211 | { | |
| 16684e9c BK |
212 | typedef typename _ToDur::rep __to_rep; |
| 213 | return _ToDur(static_cast<__to_rep>( | |
| 94a86be0 BK |
214 | static_cast<_CR>(__d.count()) / static_cast<_CR>(_CF::den))); |
| 215 | } | |
| 15e38d0d CF |
216 | }; |
| 217 | ||
| 16684e9c BK |
218 | template<typename _ToDur, typename _CF, typename _CR> |
| 219 | struct __duration_cast_impl<_ToDur, _CF, _CR, false, true> | |
| 15e38d0d | 220 | { |
| 94a86be0 | 221 | template<typename _Rep, typename _Period> |
| 16684e9c | 222 | static constexpr _ToDur |
| 94a86be0 BK |
223 | __cast(const duration<_Rep, _Period>& __d) |
| 224 | { | |
| 16684e9c BK |
225 | typedef typename _ToDur::rep __to_rep; |
| 226 | return _ToDur(static_cast<__to_rep>( | |
| 94a86be0 BK |
227 | static_cast<_CR>(__d.count()) * static_cast<_CR>(_CF::num))); |
| 228 | } | |
| 15e38d0d CF |
229 | }; |
| 230 | ||
| cc1e2504 PC |
231 | template<typename _Tp> |
| 232 | struct __is_duration | |
| 233 | : std::false_type | |
| 234 | { }; | |
| 235 | ||
| 236 | template<typename _Rep, typename _Period> | |
| 237 | struct __is_duration<duration<_Rep, _Period>> | |
| 238 | : std::true_type | |
| 239 | { }; | |
| 240 | ||
| d0dda804 JW |
241 | template<typename _Tp> |
| 242 | using __enable_if_is_duration | |
| 243 | = typename enable_if<__is_duration<_Tp>::value, _Tp>::type; | |
| 244 | ||
| 245 | template<typename _Tp> | |
| 246 | using __disable_if_is_duration | |
| 247 | = typename enable_if<!__is_duration<_Tp>::value, _Tp>::type; | |
| 248 | ||
| c34d3fd3 JW |
249 | /// @endcond |
| 250 | ||
| 5b9daa7e | 251 | /// duration_cast |
| 16684e9c | 252 | template<typename _ToDur, typename _Rep, typename _Period> |
| d0dda804 | 253 | constexpr __enable_if_is_duration<_ToDur> |
| 15e38d0d CF |
254 | duration_cast(const duration<_Rep, _Period>& __d) |
| 255 | { | |
| 16684e9c BK |
256 | typedef typename _ToDur::period __to_period; |
| 257 | typedef typename _ToDur::rep __to_rep; | |
| c128d203 | 258 | typedef ratio_divide<_Period, __to_period> __cf; |
| 16684e9c BK |
259 | typedef typename common_type<__to_rep, _Rep, intmax_t>::type |
| 260 | __cr; | |
| 261 | typedef __duration_cast_impl<_ToDur, __cf, __cr, | |
| 262 | __cf::num == 1, __cf::den == 1> __dc; | |
| 263 | return __dc::__cast(__d); | |
| 15e38d0d CF |
264 | } |
| 265 | ||
| 5b9daa7e | 266 | /// treat_as_floating_point |
| 15e38d0d | 267 | template<typename _Rep> |
| 513c5a5b | 268 | struct treat_as_floating_point |
| 15e38d0d CF |
269 | : is_floating_point<_Rep> |
| 270 | { }; | |
| 5f6acdfb | 271 | |
| 137422c8 VV |
272 | #if __cplusplus > 201402L |
| 273 | template <typename _Rep> | |
| 288695f7 | 274 | inline constexpr bool treat_as_floating_point_v = |
| 137422c8 VV |
275 | treat_as_floating_point<_Rep>::value; |
| 276 | #endif // C++17 | |
| 5f6acdfb | 277 | |
| bf1fc37b JW |
278 | #if __cplusplus > 201703L |
| 279 | template<typename _Tp> | |
| 280 | struct is_clock; | |
| 281 | ||
| 282 | template<typename _Tp> | |
| 283 | inline constexpr bool is_clock_v = is_clock<_Tp>::value; | |
| 284 | ||
| 285 | #if __cpp_lib_concepts | |
| 286 | template<typename _Tp> | |
| 287 | struct is_clock : false_type | |
| 288 | { }; | |
| 289 | ||
| 290 | template<typename _Tp> | |
| 291 | requires requires { | |
| 292 | typename _Tp::rep; | |
| 293 | typename _Tp::period; | |
| 294 | typename _Tp::duration; | |
| 295 | typename _Tp::time_point::clock; | |
| 296 | typename _Tp::time_point::duration; | |
| 297 | { &_Tp::is_steady } -> same_as<const bool*>; | |
| 298 | { _Tp::now() } -> same_as<typename _Tp::time_point>; | |
| 299 | requires same_as<typename _Tp::duration, | |
| 300 | duration<typename _Tp::rep, typename _Tp::period>>; | |
| 301 | requires same_as<typename _Tp::time_point::duration, | |
| 302 | typename _Tp::duration>; | |
| 303 | } | |
| 304 | struct is_clock<_Tp> : true_type | |
| 305 | { }; | |
| 306 | #else | |
| 307 | template<typename _Tp, typename = void> | |
| 308 | struct __is_clock_impl : false_type | |
| 309 | { }; | |
| 310 | ||
| 311 | template<typename _Tp> | |
| 312 | struct __is_clock_impl<_Tp, | |
| 313 | void_t<typename _Tp::rep, typename _Tp::period, | |
| 314 | typename _Tp::duration, | |
| 315 | typename _Tp::time_point::duration, | |
| 316 | decltype(_Tp::is_steady), | |
| 317 | decltype(_Tp::now())>> | |
| 318 | : __and_<is_same<typename _Tp::duration, | |
| 319 | duration<typename _Tp::rep, typename _Tp::period>>, | |
| 320 | is_same<typename _Tp::time_point::duration, | |
| 321 | typename _Tp::duration>, | |
| 322 | is_same<decltype(&_Tp::is_steady), const bool*>, | |
| 323 | is_same<decltype(_Tp::now()), typename _Tp::time_point>>::type | |
| 324 | { }; | |
| 325 | ||
| 326 | template<typename _Tp> | |
| 327 | struct is_clock : __is_clock_impl<_Tp>::type | |
| 328 | { }; | |
| 329 | #endif | |
| 330 | #endif // C++20 | |
| 331 | ||
| 233fa165 JW |
332 | #if __cplusplus >= 201703L |
| 333 | # define __cpp_lib_chrono 201611 | |
| 5f6acdfb JW |
334 | |
| 335 | template<typename _ToDur, typename _Rep, typename _Period> | |
| d0dda804 | 336 | constexpr __enable_if_is_duration<_ToDur> |
| 5f6acdfb JW |
337 | floor(const duration<_Rep, _Period>& __d) |
| 338 | { | |
| 339 | auto __to = chrono::duration_cast<_ToDur>(__d); | |
| 340 | if (__to > __d) | |
| 0c0d2a4c | 341 | return __to - _ToDur{1}; |
| 5f6acdfb JW |
342 | return __to; |
| 343 | } | |
| 344 | ||
| 345 | template<typename _ToDur, typename _Rep, typename _Period> | |
| d0dda804 | 346 | constexpr __enable_if_is_duration<_ToDur> |
| 5f6acdfb JW |
347 | ceil(const duration<_Rep, _Period>& __d) |
| 348 | { | |
| 53ad6b19 JW |
349 | auto __to = chrono::duration_cast<_ToDur>(__d); |
| 350 | if (__to < __d) | |
| 351 | return __to + _ToDur{1}; | |
| 352 | return __to; | |
| 5f6acdfb JW |
353 | } |
| 354 | ||
| 355 | template <typename _ToDur, typename _Rep, typename _Period> | |
| 356 | constexpr enable_if_t< | |
| 357 | __and_<__is_duration<_ToDur>, | |
| 358 | __not_<treat_as_floating_point<typename _ToDur::rep>>>::value, | |
| 359 | _ToDur> | |
| 360 | round(const duration<_Rep, _Period>& __d) | |
| 361 | { | |
| 362 | _ToDur __t0 = chrono::floor<_ToDur>(__d); | |
| 363 | _ToDur __t1 = __t0 + _ToDur{1}; | |
| 364 | auto __diff0 = __d - __t0; | |
| 365 | auto __diff1 = __t1 - __d; | |
| 366 | if (__diff0 == __diff1) | |
| 367 | { | |
| 368 | if (__t0.count() & 1) | |
| 369 | return __t1; | |
| 370 | return __t0; | |
| 371 | } | |
| 372 | else if (__diff0 < __diff1) | |
| 373 | return __t0; | |
| 374 | return __t1; | |
| 375 | } | |
| 376 | ||
| 377 | template<typename _Rep, typename _Period> | |
| 378 | constexpr | |
| 379 | enable_if_t<numeric_limits<_Rep>::is_signed, duration<_Rep, _Period>> | |
| 380 | abs(duration<_Rep, _Period> __d) | |
| 381 | { | |
| 382 | if (__d >= __d.zero()) | |
| 383 | return __d; | |
| 384 | return -__d; | |
| 385 | } | |
| 53ad6b19 JW |
386 | |
| 387 | // Make chrono::ceil<D> also usable as chrono::__detail::ceil<D>. | |
| 388 | namespace __detail { using chrono::ceil; } | |
| 389 | ||
| 390 | #else // ! C++17 | |
| 391 | ||
| 392 | // We want to use ceil even when compiling for earlier standards versions. | |
| 393 | // C++11 only allows a single statement in a constexpr function, so we | |
| 394 | // need to move the comparison into a separate function, __ceil_impl. | |
| 395 | namespace __detail | |
| 396 | { | |
| 397 | template<typename _Tp, typename _Up> | |
| 398 | constexpr _Tp | |
| 399 | __ceil_impl(const _Tp& __t, const _Up& __u) | |
| 400 | { | |
| 401 | return (__t < __u) ? (__t + _Tp{1}) : __t; | |
| 402 | } | |
| 403 | ||
| 404 | // C++11-friendly version of std::chrono::ceil<D> for internal use. | |
| 405 | template<typename _ToDur, typename _Rep, typename _Period> | |
| 406 | constexpr _ToDur | |
| 407 | ceil(const duration<_Rep, _Period>& __d) | |
| 408 | { | |
| 409 | return __detail::__ceil_impl(chrono::duration_cast<_ToDur>(__d), __d); | |
| 410 | } | |
| 411 | } | |
| 5f6acdfb JW |
412 | #endif // C++17 |
| 413 | ||
| 5b9daa7e | 414 | /// duration_values |
| 15e38d0d CF |
415 | template<typename _Rep> |
| 416 | struct duration_values | |
| 417 | { | |
| 94a86be0 | 418 | static constexpr _Rep |
| 5e9aed14 | 419 | zero() noexcept |
| 94a86be0 BK |
420 | { return _Rep(0); } |
| 421 | ||
| 422 | static constexpr _Rep | |
| 5e9aed14 | 423 | max() noexcept |
| 94a86be0 BK |
424 | { return numeric_limits<_Rep>::max(); } |
| 425 | ||
| 426 | static constexpr _Rep | |
| 5e9aed14 | 427 | min() noexcept |
| 545dc5e3 | 428 | { return numeric_limits<_Rep>::lowest(); } |
| 15e38d0d CF |
429 | }; |
| 430 | ||
| c34d3fd3 JW |
431 | /// @cond undocumented |
| 432 | ||
| 7ad68967 | 433 | template<typename _Tp> |
| 9d4e8554 CF |
434 | struct __is_ratio |
| 435 | : std::false_type | |
| 436 | { }; | |
| 437 | ||
| 438 | template<intmax_t _Num, intmax_t _Den> | |
| 439 | struct __is_ratio<ratio<_Num, _Den>> | |
| 440 | : std::true_type | |
| 441 | { }; | |
| 442 | ||
| c34d3fd3 JW |
443 | /// @endcond |
| 444 | ||
| ad68e9fc | 445 | /// duration |
| 15e38d0d CF |
446 | template<typename _Rep, typename _Period> |
| 447 | struct duration | |
| 448 | { | |
| d0dda804 JW |
449 | private: |
| 450 | template<typename _Rep2> | |
| 451 | using __is_float = treat_as_floating_point<_Rep2>; | |
| 452 | ||
| b1850c61 JW |
453 | static constexpr intmax_t |
| 454 | _S_gcd(intmax_t __m, intmax_t __n) noexcept | |
| 455 | { | |
| 456 | // Duration only allows positive periods so we don't need to | |
| 3c219134 JW |
457 | // handle negative values here (unlike __static_gcd and std::gcd). |
| 458 | #if __cplusplus >= 201402L | |
| ec5096f4 | 459 | do |
| 3c219134 JW |
460 | { |
| 461 | intmax_t __rem = __m % __n; | |
| 462 | __m = __n; | |
| 463 | __n = __rem; | |
| 464 | } | |
| ec5096f4 JW |
465 | while (__n != 0); |
| 466 | return __m; | |
| 3c219134 JW |
467 | #else |
| 468 | // C++11 doesn't allow loops in constexpr functions, but this | |
| 469 | // recursive version can be more expensive to evaluate. | |
| ec5096f4 | 470 | return (__n == 0) ? __m : _S_gcd(__n, __m % __n); |
| 3c219134 | 471 | #endif |
| b1850c61 JW |
472 | } |
| 473 | ||
| 474 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
| 475 | // 2094. overflow shouldn't participate in overload resolution | |
| 476 | // 3090. What is [2094] intended to mean? | |
| 477 | // This only produces a valid type if no overflow occurs. | |
| 478 | template<typename _R1, typename _R2, | |
| 479 | intmax_t __gcd1 = _S_gcd(_R1::num, _R2::num), | |
| 480 | intmax_t __gcd2 = _S_gcd(_R1::den, _R2::den)> | |
| 481 | using __divide = ratio<(_R1::num / __gcd1) * (_R2::den / __gcd2), | |
| 482 | (_R1::den / __gcd2) * (_R2::num / __gcd1)>; | |
| 483 | ||
| d0dda804 JW |
484 | // _Period2 is an exact multiple of _Period |
| 485 | template<typename _Period2> | |
| 486 | using __is_harmonic | |
| b1850c61 | 487 | = __bool_constant<__divide<_Period2, _Period>::den == 1>; |
| d0dda804 JW |
488 | |
| 489 | public: | |
| 490 | ||
| 82030d51 JW |
491 | using rep = _Rep; |
| 492 | using period = typename _Period::type; | |
| 94a86be0 | 493 | |
| 9d4e8554 | 494 | static_assert(!__is_duration<_Rep>::value, "rep cannot be a duration"); |
| 94a86be0 | 495 | static_assert(__is_ratio<_Period>::value, |
| 9d4e8554 | 496 | "period must be a specialization of ratio"); |
| 94a86be0 BK |
497 | static_assert(_Period::num > 0, "period must be positive"); |
| 498 | ||
| 9ab48d6e | 499 | // 20.11.5.1 construction / copy / destroy |
| d069a690 | 500 | constexpr duration() = default; |
| 94a86be0 | 501 | |
| a9ba8ba5 | 502 | duration(const duration&) = default; |
| 6f0a9757 | 503 | |
| 8499a82c JW |
504 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 505 | // 3050. Conversion specification problem in chrono::duration | |
| d0dda804 | 506 | template<typename _Rep2, typename = _Require< |
| 8499a82c | 507 | is_convertible<const _Rep2&, rep>, |
| d0dda804 | 508 | __or_<__is_float<rep>, __not_<__is_float<_Rep2>>>>> |
| 94a86be0 | 509 | constexpr explicit duration(const _Rep2& __rep) |
| 85db9dcc | 510 | : __r(static_cast<rep>(__rep)) { } |
| 15e38d0d | 511 | |
| d0dda804 | 512 | template<typename _Rep2, typename _Period2, typename = _Require< |
| b1850c61 | 513 | is_convertible<const _Rep2&, rep>, |
| d0dda804 JW |
514 | __or_<__is_float<rep>, |
| 515 | __and_<__is_harmonic<_Period2>, | |
| 516 | __not_<__is_float<_Rep2>>>>>> | |
| 94a86be0 BK |
517 | constexpr duration(const duration<_Rep2, _Period2>& __d) |
| 518 | : __r(duration_cast<duration>(__d).count()) { } | |
| 15e38d0d | 519 | |
| 9d4e8554 | 520 | ~duration() = default; |
| 9d4e8554 CF |
521 | duration& operator=(const duration&) = default; |
| 522 | ||
| 9ab48d6e | 523 | // 20.11.5.2 observer |
| 94a86be0 BK |
524 | constexpr rep |
| 525 | count() const | |
| 526 | { return __r; } | |
| 527 | ||
| 9ab48d6e | 528 | // 20.11.5.3 arithmetic |
| 82030d51 | 529 | |
| f2f48b68 | 530 | constexpr duration<typename common_type<rep>::type, period> |
| 94a86be0 | 531 | operator+() const |
| f2f48b68 | 532 | { return duration<typename common_type<rep>::type, period>(__r); } |
| 94a86be0 | 533 | |
| f2f48b68 | 534 | constexpr duration<typename common_type<rep>::type, period> |
| 94a86be0 | 535 | operator-() const |
| f2f48b68 | 536 | { return duration<typename common_type<rep>::type, period>(-__r); } |
| 94a86be0 | 537 | |
| 1dee318a | 538 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
539 | operator++() |
| 540 | { | |
| 541 | ++__r; | |
| 542 | return *this; | |
| 543 | } | |
| 544 | ||
| 1dee318a | 545 | _GLIBCXX17_CONSTEXPR duration |
| 94a86be0 BK |
546 | operator++(int) |
| 547 | { return duration(__r++); } | |
| 548 | ||
| 1dee318a | 549 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
550 | operator--() |
| 551 | { | |
| 552 | --__r; | |
| 553 | return *this; | |
| 554 | } | |
| 555 | ||
| 1dee318a | 556 | _GLIBCXX17_CONSTEXPR duration |
| 94a86be0 BK |
557 | operator--(int) |
| 558 | { return duration(__r--); } | |
| 559 | ||
| 1dee318a | 560 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
561 | operator+=(const duration& __d) |
| 562 | { | |
| 563 | __r += __d.count(); | |
| 564 | return *this; | |
| 565 | } | |
| 566 | ||
| 1dee318a | 567 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
568 | operator-=(const duration& __d) |
| 569 | { | |
| 570 | __r -= __d.count(); | |
| 571 | return *this; | |
| 572 | } | |
| 573 | ||
| 1dee318a | 574 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
575 | operator*=(const rep& __rhs) |
| 576 | { | |
| 577 | __r *= __rhs; | |
| 578 | return *this; | |
| 579 | } | |
| 580 | ||
| 1dee318a | 581 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
582 | operator/=(const rep& __rhs) |
| 583 | { | |
| 584 | __r /= __rhs; | |
| 585 | return *this; | |
| 586 | } | |
| 15e38d0d | 587 | |
| 513c5a5b PC |
588 | // DR 934. |
| 589 | template<typename _Rep2 = rep> | |
| 1dee318a | 590 | _GLIBCXX17_CONSTEXPR |
| 513c5a5b PC |
591 | typename enable_if<!treat_as_floating_point<_Rep2>::value, |
| 592 | duration&>::type | |
| 593 | operator%=(const rep& __rhs) | |
| 594 | { | |
| 595 | __r %= __rhs; | |
| 596 | return *this; | |
| 597 | } | |
| 598 | ||
| 599 | template<typename _Rep2 = rep> | |
| 1dee318a | 600 | _GLIBCXX17_CONSTEXPR |
| 513c5a5b PC |
601 | typename enable_if<!treat_as_floating_point<_Rep2>::value, |
| 602 | duration&>::type | |
| 603 | operator%=(const duration& __d) | |
| 604 | { | |
| 605 | __r %= __d.count(); | |
| 606 | return *this; | |
| 607 | } | |
| 608 | ||
| 9ab48d6e | 609 | // 20.11.5.4 special values |
| 94a86be0 | 610 | static constexpr duration |
| 5e9aed14 | 611 | zero() noexcept |
| 94a86be0 BK |
612 | { return duration(duration_values<rep>::zero()); } |
| 613 | ||
| 614 | static constexpr duration | |
| 5e9aed14 | 615 | min() noexcept |
| 94a86be0 | 616 | { return duration(duration_values<rep>::min()); } |
| 15e38d0d | 617 | |
| 94a86be0 | 618 | static constexpr duration |
| 5e9aed14 | 619 | max() noexcept |
| 94a86be0 | 620 | { return duration(duration_values<rep>::max()); } |
| 513c5a5b PC |
621 | |
| 622 | private: | |
| 94a86be0 | 623 | rep __r; |
| 15e38d0d CF |
624 | }; |
| 625 | ||
| c34d3fd3 JW |
626 | /// @relates duration @{ |
| 627 | ||
| 628 | /// The sum of two durations. | |
| 15e38d0d | 629 | template<typename _Rep1, typename _Period1, |
| 94a86be0 | 630 | typename _Rep2, typename _Period2> |
| a4eeb822 PC |
631 | constexpr typename common_type<duration<_Rep1, _Period1>, |
| 632 | duration<_Rep2, _Period2>>::type | |
| 94a86be0 BK |
633 | operator+(const duration<_Rep1, _Period1>& __lhs, |
| 634 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 635 | { |
| 16684e9c BK |
636 | typedef duration<_Rep1, _Period1> __dur1; |
| 637 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
638 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 639 | return __cd(__cd(__lhs).count() + __cd(__rhs).count()); | |
| 15e38d0d CF |
640 | } |
| 641 | ||
| c34d3fd3 | 642 | /// The difference between two durations. |
| 94a86be0 BK |
643 | template<typename _Rep1, typename _Period1, |
| 644 | typename _Rep2, typename _Period2> | |
| a4eeb822 PC |
645 | constexpr typename common_type<duration<_Rep1, _Period1>, |
| 646 | duration<_Rep2, _Period2>>::type | |
| 94a86be0 BK |
647 | operator-(const duration<_Rep1, _Period1>& __lhs, |
| 648 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 649 | { |
| 16684e9c BK |
650 | typedef duration<_Rep1, _Period1> __dur1; |
| 651 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
652 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 653 | return __cd(__cd(__lhs).count() - __cd(__rhs).count()); | |
| 15e38d0d CF |
654 | } |
| 655 | ||
| c34d3fd3 JW |
656 | /// @} |
| 657 | ||
| 658 | /// @cond undocumented | |
| 659 | ||
| d0dda804 JW |
660 | // SFINAE helper to obtain common_type<_Rep1, _Rep2> only if _Rep2 |
| 661 | // is implicitly convertible to it. | |
| 8499a82c JW |
662 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 663 | // 3050. Conversion specification problem in chrono::duration constructor | |
| d0dda804 JW |
664 | template<typename _Rep1, typename _Rep2, |
| 665 | typename _CRep = typename common_type<_Rep1, _Rep2>::type> | |
| 8499a82c JW |
666 | using __common_rep_t = typename |
| 667 | enable_if<is_convertible<const _Rep2&, _CRep>::value, _CRep>::type; | |
| cc1e2504 | 668 | |
| c34d3fd3 JW |
669 | /// @endcond |
| 670 | ||
| 671 | /// @relates duration @{ | |
| 672 | ||
| 673 | /// Multiply a duration by a scalar value. | |
| 15e38d0d | 674 | template<typename _Rep1, typename _Period, typename _Rep2> |
| d0dda804 | 675 | constexpr duration<__common_rep_t<_Rep1, _Rep2>, _Period> |
| 15e38d0d CF |
676 | operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| 677 | { | |
| b850be9d PC |
678 | typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| 679 | __cd; | |
| 680 | return __cd(__cd(__d).count() * __s); | |
| 15e38d0d CF |
681 | } |
| 682 | ||
| c34d3fd3 | 683 | /// Multiply a duration by a scalar value. |
| dbb45bf9 | 684 | template<typename _Rep1, typename _Rep2, typename _Period> |
| d0dda804 | 685 | constexpr duration<__common_rep_t<_Rep2, _Rep1>, _Period> |
| cc1e2504 | 686 | operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) |
| 15e38d0d | 687 | { return __d * __s; } |
| 94a86be0 | 688 | |
| 15e38d0d | 689 | template<typename _Rep1, typename _Period, typename _Rep2> |
| d0dda804 JW |
690 | constexpr |
| 691 | duration<__common_rep_t<_Rep1, __disable_if_is_duration<_Rep2>>, _Period> | |
| 513c5a5b | 692 | operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| 15e38d0d | 693 | { |
| b850be9d PC |
694 | typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| 695 | __cd; | |
| 696 | return __cd(__cd(__d).count() / __s); | |
| 513c5a5b | 697 | } |
| 15e38d0d | 698 | |
| a4eeb822 PC |
699 | template<typename _Rep1, typename _Period1, |
| 700 | typename _Rep2, typename _Period2> | |
| 701 | constexpr typename common_type<_Rep1, _Rep2>::type | |
| 94a86be0 BK |
702 | operator/(const duration<_Rep1, _Period1>& __lhs, |
| 703 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 704 | { |
| 16684e9c BK |
705 | typedef duration<_Rep1, _Period1> __dur1; |
| 706 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
707 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 708 | return __cd(__lhs).count() / __cd(__rhs).count(); | |
| 513c5a5b | 709 | } |
| 15e38d0d | 710 | |
| 513c5a5b PC |
711 | // DR 934. |
| 712 | template<typename _Rep1, typename _Period, typename _Rep2> | |
| d0dda804 JW |
713 | constexpr |
| 714 | duration<__common_rep_t<_Rep1, __disable_if_is_duration<_Rep2>>, _Period> | |
| 513c5a5b | 715 | operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| 15e38d0d | 716 | { |
| b850be9d PC |
717 | typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| 718 | __cd; | |
| 719 | return __cd(__cd(__d).count() % __s); | |
| 15e38d0d | 720 | } |
| 513c5a5b | 721 | |
| a4eeb822 PC |
722 | template<typename _Rep1, typename _Period1, |
| 723 | typename _Rep2, typename _Period2> | |
| 724 | constexpr typename common_type<duration<_Rep1, _Period1>, | |
| 725 | duration<_Rep2, _Period2>>::type | |
| 94a86be0 BK |
726 | operator%(const duration<_Rep1, _Period1>& __lhs, |
| 727 | const duration<_Rep2, _Period2>& __rhs) | |
| 513c5a5b | 728 | { |
| 16684e9c BK |
729 | typedef duration<_Rep1, _Period1> __dur1; |
| 730 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
731 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 732 | return __cd(__cd(__lhs).count() % __cd(__rhs).count()); | |
| 513c5a5b PC |
733 | } |
| 734 | ||
| 15e38d0d | 735 | // comparisons |
| c34d3fd3 | 736 | |
| 15e38d0d | 737 | template<typename _Rep1, typename _Period1, |
| 94a86be0 | 738 | typename _Rep2, typename _Period2> |
| a4eeb822 | 739 | constexpr bool |
| 94a86be0 BK |
740 | operator==(const duration<_Rep1, _Period1>& __lhs, |
| 741 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 742 | { |
| 16684e9c BK |
743 | typedef duration<_Rep1, _Period1> __dur1; |
| 744 | typedef duration<_Rep2, _Period2> __dur2; | |
| 745 | typedef typename common_type<__dur1,__dur2>::type __ct; | |
| 94a86be0 | 746 | return __ct(__lhs).count() == __ct(__rhs).count(); |
| 15e38d0d CF |
747 | } |
| 748 | ||
| 749 | template<typename _Rep1, typename _Period1, | |
| 94a86be0 | 750 | typename _Rep2, typename _Period2> |
| a4eeb822 | 751 | constexpr bool |
| 94a86be0 BK |
752 | operator<(const duration<_Rep1, _Period1>& __lhs, |
| 753 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 754 | { |
| 16684e9c BK |
755 | typedef duration<_Rep1, _Period1> __dur1; |
| 756 | typedef duration<_Rep2, _Period2> __dur2; | |
| 757 | typedef typename common_type<__dur1,__dur2>::type __ct; | |
| 94a86be0 | 758 | return __ct(__lhs).count() < __ct(__rhs).count(); |
| 15e38d0d CF |
759 | } |
| 760 | ||
| 27c17177 JW |
761 | #if __cpp_lib_three_way_comparison |
| 762 | template<typename _Rep1, typename _Period1, | |
| 763 | typename _Rep2, typename _Period2> | |
| 764 | requires three_way_comparable<common_type_t<_Rep1, _Rep2>> | |
| 765 | constexpr auto | |
| 766 | operator<=>(const duration<_Rep1, _Period1>& __lhs, | |
| 767 | const duration<_Rep2, _Period2>& __rhs) | |
| 768 | { | |
| 769 | using __ct = common_type_t<duration<_Rep1, _Period1>, | |
| 770 | duration<_Rep2, _Period2>>; | |
| 771 | return __ct(__lhs).count() <=> __ct(__rhs).count(); | |
| 772 | } | |
| 773 | #else | |
| 15e38d0d | 774 | template<typename _Rep1, typename _Period1, |
| 94a86be0 | 775 | typename _Rep2, typename _Period2> |
| a4eeb822 | 776 | constexpr bool |
| 94a86be0 BK |
777 | operator!=(const duration<_Rep1, _Period1>& __lhs, |
| 778 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 779 | { return !(__lhs == __rhs); } |
| 27c17177 | 780 | #endif |
| 15e38d0d CF |
781 | |
| 782 | template<typename _Rep1, typename _Period1, | |
| 94a86be0 | 783 | typename _Rep2, typename _Period2> |
| a4eeb822 | 784 | constexpr bool |
| 94a86be0 BK |
785 | operator<=(const duration<_Rep1, _Period1>& __lhs, |
| 786 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d CF |
787 | { return !(__rhs < __lhs); } |
| 788 | ||
| 789 | template<typename _Rep1, typename _Period1, | |
| 94a86be0 | 790 | typename _Rep2, typename _Period2> |
| a4eeb822 | 791 | constexpr bool |
| 94a86be0 BK |
792 | operator>(const duration<_Rep1, _Period1>& __lhs, |
| 793 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d CF |
794 | { return __rhs < __lhs; } |
| 795 | ||
| 94a86be0 BK |
796 | template<typename _Rep1, typename _Period1, |
| 797 | typename _Rep2, typename _Period2> | |
| a4eeb822 | 798 | constexpr bool |
| 94a86be0 BK |
799 | operator>=(const duration<_Rep1, _Period1>& __lhs, |
| 800 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d CF |
801 | { return !(__lhs < __rhs); } |
| 802 | ||
| c34d3fd3 JW |
803 | /// @} |
| 804 | ||
| 8ba7f29e JW |
805 | #ifdef _GLIBCXX_USE_C99_STDINT_TR1 |
| 806 | # define _GLIBCXX_CHRONO_INT64_T int64_t | |
| 807 | #elif defined __INT64_TYPE__ | |
| 808 | # define _GLIBCXX_CHRONO_INT64_T __INT64_TYPE__ | |
| 809 | #else | |
| 810 | static_assert(std::numeric_limits<unsigned long long>::digits >= 64, | |
| 811 | "Representation type for nanoseconds must have at least 64 bits"); | |
| 812 | # define _GLIBCXX_CHRONO_INT64_T long long | |
| 813 | #endif | |
| 814 | ||
| 5b9daa7e | 815 | /// nanoseconds |
| 16948c54 | 816 | using nanoseconds = duration<_GLIBCXX_CHRONO_INT64_T, nano>; |
| 5b9daa7e BK |
817 | |
| 818 | /// microseconds | |
| 16948c54 | 819 | using microseconds = duration<_GLIBCXX_CHRONO_INT64_T, micro>; |
| 5b9daa7e BK |
820 | |
| 821 | /// milliseconds | |
| 16948c54 | 822 | using milliseconds = duration<_GLIBCXX_CHRONO_INT64_T, milli>; |
| 94a86be0 | 823 | |
| 5b9daa7e | 824 | /// seconds |
| 16948c54 | 825 | using seconds = duration<_GLIBCXX_CHRONO_INT64_T>; |
| 5b9daa7e BK |
826 | |
| 827 | /// minutes | |
| 16948c54 | 828 | using minutes = duration<_GLIBCXX_CHRONO_INT64_T, ratio< 60>>; |
| 5b9daa7e BK |
829 | |
| 830 | /// hours | |
| 16948c54 JW |
831 | using hours = duration<_GLIBCXX_CHRONO_INT64_T, ratio<3600>>; |
| 832 | ||
| 833 | #if __cplusplus > 201703L | |
| 834 | /// days | |
| 835 | using days = duration<_GLIBCXX_CHRONO_INT64_T, ratio<86400>>; | |
| 836 | ||
| 837 | /// weeks | |
| 838 | using weeks = duration<_GLIBCXX_CHRONO_INT64_T, ratio<604800>>; | |
| 839 | ||
| 840 | /// years | |
| 841 | using years = duration<_GLIBCXX_CHRONO_INT64_T, ratio<31556952>>; | |
| 842 | ||
| 843 | /// months | |
| 844 | using months = duration<_GLIBCXX_CHRONO_INT64_T, ratio<2629746>>; | |
| 845 | #endif // C++20 | |
| 8ba7f29e JW |
846 | |
| 847 | #undef _GLIBCXX_CHRONO_INT64_T | |
| 15e38d0d | 848 | |
| ad68e9fc | 849 | /// time_point |
| 16684e9c | 850 | template<typename _Clock, typename _Dur> |
| ad68e9fc | 851 | struct time_point |
| 15e38d0d | 852 | { |
| 16948c54 JW |
853 | static_assert(__is_duration<_Dur>::value, |
| 854 | "duration must be a specialization of std::chrono::duration"); | |
| 855 | ||
| 856 | typedef _Clock clock; | |
| 857 | typedef _Dur duration; | |
| 858 | typedef typename duration::rep rep; | |
| 16684e9c | 859 | typedef typename duration::period period; |
| ad68e9fc | 860 | |
| 94a86be0 | 861 | constexpr time_point() : __d(duration::zero()) |
| ad68e9fc BK |
862 | { } |
| 863 | ||
| 94a86be0 BK |
864 | constexpr explicit time_point(const duration& __dur) |
| 865 | : __d(__dur) | |
| ad68e9fc BK |
866 | { } |
| 867 | ||
| 868 | // conversions | |
| d0dda804 JW |
869 | template<typename _Dur2, |
| 870 | typename = _Require<is_convertible<_Dur2, _Dur>>> | |
| 16684e9c | 871 | constexpr time_point(const time_point<clock, _Dur2>& __t) |
| ad68e9fc BK |
872 | : __d(__t.time_since_epoch()) |
| 873 | { } | |
| 874 | ||
| 875 | // observer | |
| 94a86be0 | 876 | constexpr duration |
| ad68e9fc BK |
877 | time_since_epoch() const |
| 878 | { return __d; } | |
| 94a86be0 | 879 | |
| 03d5044b PP |
880 | #if __cplusplus > 201703L |
| 881 | constexpr time_point& | |
| 882 | operator++() | |
| 883 | { | |
| 884 | ++__d; | |
| 885 | return *this; | |
| 886 | } | |
| 887 | ||
| 888 | constexpr time_point | |
| 889 | operator++(int) | |
| 890 | { return time_point{__d++}; } | |
| 891 | ||
| 892 | constexpr time_point& | |
| 893 | operator--() | |
| 894 | { | |
| 895 | --__d; | |
| 896 | return *this; | |
| 897 | } | |
| 898 | ||
| 899 | constexpr time_point | |
| 900 | operator--(int) | |
| 901 | { return time_point{__d--}; } | |
| 902 | #endif | |
| 903 | ||
| ad68e9fc | 904 | // arithmetic |
| 1dee318a | 905 | _GLIBCXX17_CONSTEXPR time_point& |
| ad68e9fc BK |
906 | operator+=(const duration& __dur) |
| 907 | { | |
| 908 | __d += __dur; | |
| 909 | return *this; | |
| 910 | } | |
| 94a86be0 | 911 | |
| 1dee318a | 912 | _GLIBCXX17_CONSTEXPR time_point& |
| ad68e9fc BK |
913 | operator-=(const duration& __dur) |
| 914 | { | |
| 915 | __d -= __dur; | |
| 916 | return *this; | |
| 917 | } | |
| 94a86be0 | 918 | |
| ad68e9fc | 919 | // special values |
| 94a86be0 | 920 | static constexpr time_point |
| 5e9aed14 | 921 | min() noexcept |
| ad68e9fc | 922 | { return time_point(duration::min()); } |
| 94a86be0 BK |
923 | |
| 924 | static constexpr time_point | |
| 5e9aed14 | 925 | max() noexcept |
| ad68e9fc | 926 | { return time_point(duration::max()); } |
| 94a86be0 | 927 | |
| ad68e9fc BK |
928 | private: |
| 929 | duration __d; | |
| 930 | }; | |
| 94a86be0 | 931 | |
| 5b9daa7e | 932 | /// time_point_cast |
| 16684e9c | 933 | template<typename _ToDur, typename _Clock, typename _Dur> |
| a4eeb822 PC |
934 | constexpr typename enable_if<__is_duration<_ToDur>::value, |
| 935 | time_point<_Clock, _ToDur>>::type | |
| 16684e9c | 936 | time_point_cast(const time_point<_Clock, _Dur>& __t) |
| 15e38d0d | 937 | { |
| 16948c54 | 938 | typedef time_point<_Clock, _ToDur> __time_point; |
| 16684e9c | 939 | return __time_point(duration_cast<_ToDur>(__t.time_since_epoch())); |
| 15e38d0d CF |
940 | } |
| 941 | ||
| 5f6acdfb JW |
942 | #if __cplusplus > 201402L |
| 943 | template<typename _ToDur, typename _Clock, typename _Dur> | |
| 944 | constexpr | |
| 945 | enable_if_t<__is_duration<_ToDur>::value, time_point<_Clock, _ToDur>> | |
| 946 | floor(const time_point<_Clock, _Dur>& __tp) | |
| 947 | { | |
| 948 | return time_point<_Clock, _ToDur>{ | |
| 949 | chrono::floor<_ToDur>(__tp.time_since_epoch())}; | |
| 950 | } | |
| 951 | ||
| 952 | template<typename _ToDur, typename _Clock, typename _Dur> | |
| 953 | constexpr | |
| 954 | enable_if_t<__is_duration<_ToDur>::value, time_point<_Clock, _ToDur>> | |
| 955 | ceil(const time_point<_Clock, _Dur>& __tp) | |
| 956 | { | |
| 957 | return time_point<_Clock, _ToDur>{ | |
| 958 | chrono::ceil<_ToDur>(__tp.time_since_epoch())}; | |
| 959 | } | |
| 960 | ||
| 961 | template<typename _ToDur, typename _Clock, typename _Dur> | |
| 962 | constexpr enable_if_t< | |
| 963 | __and_<__is_duration<_ToDur>, | |
| 964 | __not_<treat_as_floating_point<typename _ToDur::rep>>>::value, | |
| 965 | time_point<_Clock, _ToDur>> | |
| 966 | round(const time_point<_Clock, _Dur>& __tp) | |
| 967 | { | |
| 968 | return time_point<_Clock, _ToDur>{ | |
| 969 | chrono::round<_ToDur>(__tp.time_since_epoch())}; | |
| 970 | } | |
| 971 | #endif // C++17 | |
| 972 | ||
| c34d3fd3 JW |
973 | /// @relates time_point @{ |
| 974 | ||
| 975 | /// Adjust a time point forwards by the given duration. | |
| 16684e9c | 976 | template<typename _Clock, typename _Dur1, |
| 94a86be0 | 977 | typename _Rep2, typename _Period2> |
| a4eeb822 | 978 | constexpr time_point<_Clock, |
| 16684e9c BK |
979 | typename common_type<_Dur1, duration<_Rep2, _Period2>>::type> |
| 980 | operator+(const time_point<_Clock, _Dur1>& __lhs, | |
| 94a86be0 | 981 | const duration<_Rep2, _Period2>& __rhs) |
| 15e38d0d | 982 | { |
| 16684e9c BK |
983 | typedef duration<_Rep2, _Period2> __dur2; |
| 984 | typedef typename common_type<_Dur1,__dur2>::type __ct; | |
| 16948c54 | 985 | typedef time_point<_Clock, __ct> __time_point; |
| 1b97ec17 | 986 | return __time_point(__lhs.time_since_epoch() + __rhs); |
| 15e38d0d CF |
987 | } |
| 988 | ||
| c34d3fd3 | 989 | /// Adjust a time point forwards by the given duration. |
| 15e38d0d | 990 | template<typename _Rep1, typename _Period1, |
| 16684e9c | 991 | typename _Clock, typename _Dur2> |
| a4eeb822 | 992 | constexpr time_point<_Clock, |
| 16684e9c | 993 | typename common_type<duration<_Rep1, _Period1>, _Dur2>::type> |
| 94a86be0 | 994 | operator+(const duration<_Rep1, _Period1>& __lhs, |
| 16684e9c | 995 | const time_point<_Clock, _Dur2>& __rhs) |
| 33ac58d5 | 996 | { |
| 1b97ec17 BK |
997 | typedef duration<_Rep1, _Period1> __dur1; |
| 998 | typedef typename common_type<__dur1,_Dur2>::type __ct; | |
| 16948c54 | 999 | typedef time_point<_Clock, __ct> __time_point; |
| 33ac58d5 | 1000 | return __time_point(__rhs.time_since_epoch() + __lhs); |
| 1b97ec17 | 1001 | } |
| 15e38d0d | 1002 | |
| c34d3fd3 | 1003 | /// Adjust a time point backwards by the given duration. |
| 16684e9c | 1004 | template<typename _Clock, typename _Dur1, |
| 94a86be0 | 1005 | typename _Rep2, typename _Period2> |
| a4eeb822 | 1006 | constexpr time_point<_Clock, |
| 16684e9c BK |
1007 | typename common_type<_Dur1, duration<_Rep2, _Period2>>::type> |
| 1008 | operator-(const time_point<_Clock, _Dur1>& __lhs, | |
| 94a86be0 | 1009 | const duration<_Rep2, _Period2>& __rhs) |
| 33ac58d5 | 1010 | { |
| 1b97ec17 BK |
1011 | typedef duration<_Rep2, _Period2> __dur2; |
| 1012 | typedef typename common_type<_Dur1,__dur2>::type __ct; | |
| 16948c54 | 1013 | typedef time_point<_Clock, __ct> __time_point; |
| 33ac58d5 | 1014 | return __time_point(__lhs.time_since_epoch() -__rhs); |
| 1b97ec17 | 1015 | } |
| 15e38d0d | 1016 | |
| c34d3fd3 JW |
1017 | /// @} |
| 1018 | ||
| 1019 | /// @relates time_point @{ | |
| 1020 | ||
| 1021 | /// The difference between two time points (as a duration) | |
| 16684e9c | 1022 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1023 | constexpr typename common_type<_Dur1, _Dur2>::type |
| 16684e9c BK |
1024 | operator-(const time_point<_Clock, _Dur1>& __lhs, |
| 1025 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1026 | { return __lhs.time_since_epoch() - __rhs.time_since_epoch(); } |
| 1027 | ||
| 16684e9c | 1028 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1029 | constexpr bool |
| 16684e9c BK |
1030 | operator==(const time_point<_Clock, _Dur1>& __lhs, |
| 1031 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1032 | { return __lhs.time_since_epoch() == __rhs.time_since_epoch(); } |
| 1033 | ||
| 27c17177 JW |
1034 | #if __cpp_lib_three_way_comparison |
| 1035 | template<typename _Clock, typename _Dur1, | |
| 1036 | three_way_comparable_with<_Dur1> _Dur2> | |
| 1037 | constexpr auto | |
| 1038 | operator<=>(const time_point<_Clock, _Dur1>& __lhs, | |
| 1039 | const time_point<_Clock, _Dur2>& __rhs) | |
| 1040 | { return __lhs.time_since_epoch() <=> __rhs.time_since_epoch(); } | |
| 1041 | #else | |
| 16684e9c | 1042 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1043 | constexpr bool |
| 16684e9c BK |
1044 | operator!=(const time_point<_Clock, _Dur1>& __lhs, |
| 1045 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d | 1046 | { return !(__lhs == __rhs); } |
| 27c17177 | 1047 | #endif |
| 15e38d0d | 1048 | |
| 16684e9c | 1049 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1050 | constexpr bool |
| 16684e9c BK |
1051 | operator<(const time_point<_Clock, _Dur1>& __lhs, |
| 1052 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1053 | { return __lhs.time_since_epoch() < __rhs.time_since_epoch(); } |
| 1054 | ||
| 16684e9c | 1055 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1056 | constexpr bool |
| 16684e9c BK |
1057 | operator<=(const time_point<_Clock, _Dur1>& __lhs, |
| 1058 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1059 | { return !(__rhs < __lhs); } |
| 1060 | ||
| 16684e9c | 1061 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1062 | constexpr bool |
| 16684e9c BK |
1063 | operator>(const time_point<_Clock, _Dur1>& __lhs, |
| 1064 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1065 | { return __rhs < __lhs; } |
| 1066 | ||
| 16684e9c | 1067 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1068 | constexpr bool |
| 16684e9c BK |
1069 | operator>=(const time_point<_Clock, _Dur1>& __lhs, |
| 1070 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1071 | { return !(__lhs < __rhs); } |
| 1072 | ||
| c34d3fd3 | 1073 | // @} |
| 1f08a749 | 1074 | |
| 33ac58d5 | 1075 | // Clocks. |
| 1f08a749 | 1076 | |
| 33ac58d5 | 1077 | // Why nanosecond resolution as the default? |
| b236debd | 1078 | // Why have std::system_clock always count in the highest |
| 1f08a749 BK |
1079 | // resolution (ie nanoseconds), even if on some OSes the low 3 |
| 1080 | // or 9 decimal digits will be always zero? This allows later | |
| 1081 | // implementations to change the system_clock::now() | |
| 1082 | // implementation any time to provide better resolution without | |
| 1083 | // changing function signature or units. | |
| 1084 | ||
| 1085 | // To support the (forward) evolution of the library's defined | |
| 1086 | // clocks, wrap inside inline namespace so that the current | |
| 1087 | // defintions of system_clock, steady_clock, and | |
| 1088 | // high_resolution_clock types are uniquely mangled. This way, new | |
| 1089 | // code can use the latests clocks, while the library can contain | |
| 1090 | // compatibility definitions for previous versions. At some | |
| 1091 | // point, when these clocks settle down, the inlined namespaces | |
| 1092 | // can be removed. XXX GLIBCXX_ABI Deprecated | |
| 1093 | inline namespace _V2 { | |
| 1094 | ||
| 1095 | /** | |
| 1096 | * @brief System clock. | |
| 1097 | * | |
| 1098 | * Time returned represents wall time from the system-wide clock. | |
| c34d3fd3 | 1099 | * @ingroup chrono |
| 1f08a749 | 1100 | */ |
| 88c4d6b7 | 1101 | struct system_clock |
| 15e38d0d | 1102 | { |
| 16948c54 JW |
1103 | typedef chrono::nanoseconds duration; |
| 1104 | typedef duration::rep rep; | |
| 1105 | typedef duration::period period; | |
| 85db9dcc | 1106 | typedef chrono::time_point<system_clock, duration> time_point; |
| 15e38d0d | 1107 | |
| 94a86be0 BK |
1108 | static_assert(system_clock::duration::min() |
| 1109 | < system_clock::duration::zero(), | |
| 1110 | "a clock's minimum duration cannot be less than its epoch"); | |
| 1111 | ||
| 1b97ec17 | 1112 | static constexpr bool is_steady = false; |
| 15e38d0d CF |
1113 | |
| 1114 | static time_point | |
| 8535715d | 1115 | now() noexcept; |
| 15e38d0d CF |
1116 | |
| 1117 | // Map to C API | |
| 1118 | static std::time_t | |
| 8535715d | 1119 | to_time_t(const time_point& __t) noexcept |
| 15e38d0d | 1120 | { |
| 16684e9c BK |
1121 | return std::time_t(duration_cast<chrono::seconds> |
| 1122 | (__t.time_since_epoch()).count()); | |
| 15e38d0d CF |
1123 | } |
| 1124 | ||
| 1125 | static time_point | |
| 8535715d | 1126 | from_time_t(std::time_t __t) noexcept |
| 94a86be0 | 1127 | { |
| 16684e9c BK |
1128 | typedef chrono::time_point<system_clock, seconds> __from; |
| 1129 | return time_point_cast<system_clock::duration> | |
| 1130 | (__from(chrono::seconds(__t))); | |
| 15e38d0d | 1131 | } |
| 15e38d0d CF |
1132 | }; |
| 1133 | ||
| 1f08a749 BK |
1134 | |
| 1135 | /** | |
| 1136 | * @brief Monotonic clock | |
| 1137 | * | |
| 1138 | * Time returned has the property of only increasing at a uniform rate. | |
| c34d3fd3 | 1139 | * @ingroup chrono |
| 1f08a749 | 1140 | */ |
| 1b97ec17 | 1141 | struct steady_clock |
| 88399079 | 1142 | { |
| 16948c54 JW |
1143 | typedef chrono::nanoseconds duration; |
| 1144 | typedef duration::rep rep; | |
| 1145 | typedef duration::period period; | |
| 1146 | typedef chrono::time_point<steady_clock, duration> time_point; | |
| 88399079 | 1147 | |
| 1b97ec17 | 1148 | static constexpr bool is_steady = true; |
| 88399079 CF |
1149 | |
| 1150 | static time_point | |
| 8535715d | 1151 | now() noexcept; |
| 88399079 | 1152 | }; |
| 88399079 | 1153 | |
| 1f08a749 BK |
1154 | |
| 1155 | /** | |
| 1156 | * @brief Highest-resolution clock | |
| 1157 | * | |
| 1158 | * This is the clock "with the shortest tick period." Alias to | |
| 1159 | * std::system_clock until higher-than-nanosecond definitions | |
| 1160 | * become feasible. | |
| c34d3fd3 | 1161 | * @ingroup chrono |
| 1f08a749 BK |
1162 | */ |
| 1163 | using high_resolution_clock = system_clock; | |
| 1164 | ||
| 88c4d6b7 | 1165 | } // end inline namespace _V2 |
| bf1fc37b JW |
1166 | |
| 1167 | #if __cplusplus > 201703L | |
| 1168 | template<typename _Duration> | |
| 1169 | using sys_time = time_point<system_clock, _Duration>; | |
| 1170 | using sys_seconds = sys_time<seconds>; | |
| 16948c54 | 1171 | using sys_days = sys_time<days>; |
| bf1fc37b JW |
1172 | |
| 1173 | using file_clock = ::std::filesystem::__file_clock; | |
| 1174 | ||
| 1175 | template<typename _Duration> | |
| 1176 | using file_time = time_point<file_clock, _Duration>; | |
| 1177 | ||
| 1178 | template<> struct is_clock<system_clock> : true_type { }; | |
| 1179 | template<> struct is_clock<steady_clock> : true_type { }; | |
| 1180 | template<> struct is_clock<file_clock> : true_type { }; | |
| 1181 | ||
| 1182 | template<> inline constexpr bool is_clock_v<system_clock> = true; | |
| 1183 | template<> inline constexpr bool is_clock_v<steady_clock> = true; | |
| 1184 | template<> inline constexpr bool is_clock_v<file_clock> = true; | |
| 16948c54 JW |
1185 | |
| 1186 | struct local_t { }; | |
| 1187 | template<typename _Duration> | |
| 1188 | using local_time = time_point<local_t, _Duration>; | |
| 1189 | using local_seconds = local_time<seconds>; | |
| 1190 | using local_days = local_time<days>; | |
| bf1fc37b | 1191 | |
| 03d5044b PP |
1192 | class utc_clock; |
| 1193 | class tai_clock; | |
| 1194 | class gps_clock; | |
| 5b9daa7e | 1195 | |
| 03d5044b PP |
1196 | template<typename _Duration> |
| 1197 | using utc_time = time_point<utc_clock, _Duration>; | |
| 1198 | using utc_seconds = utc_time<seconds>; | |
| 15e38d0d | 1199 | |
| 03d5044b PP |
1200 | template<typename _Duration> |
| 1201 | using tai_time = time_point<tai_clock, _Duration>; | |
| 1202 | using tai_seconds = tai_time<seconds>; | |
| a15f7cb8 | 1203 | |
| 03d5044b PP |
1204 | template<typename _Duration> |
| 1205 | using gps_time = time_point<gps_clock, _Duration>; | |
| 1206 | using gps_seconds = gps_time<seconds>; | |
| 1207 | ||
| 1208 | template<> struct is_clock<utc_clock> : true_type { }; | |
| 1209 | template<> struct is_clock<tai_clock> : true_type { }; | |
| 1210 | template<> struct is_clock<gps_clock> : true_type { }; | |
| 1211 | ||
| 1212 | template<> inline constexpr bool is_clock_v<utc_clock> = true; | |
| 1213 | template<> inline constexpr bool is_clock_v<tai_clock> = true; | |
| 1214 | template<> inline constexpr bool is_clock_v<gps_clock> = true; | |
| 1215 | ||
| 1216 | struct leap_second_info | |
| 1217 | { | |
| 1218 | bool is_leap_second; | |
| 1219 | seconds elapsed; | |
| 1220 | }; | |
| 1221 | ||
| 1222 | // CALENDRICAL TYPES | |
| 1223 | ||
| 1224 | // CLASS DECLARATIONS | |
| 1225 | class day; | |
| 1226 | class month; | |
| 1227 | class year; | |
| 1228 | class weekday; | |
| 1229 | class weekday_indexed; | |
| 1230 | class weekday_last; | |
| 1231 | class month_day; | |
| 1232 | class month_day_last; | |
| 1233 | class month_weekday; | |
| 1234 | class month_weekday_last; | |
| 1235 | class year_month; | |
| 1236 | class year_month_day; | |
| 1237 | class year_month_day_last; | |
| 1238 | class year_month_weekday; | |
| 1239 | class year_month_weekday_last; | |
| 1240 | ||
| 1241 | struct last_spec | |
| 1242 | { | |
| 1243 | explicit last_spec() = default; | |
| 1244 | ||
| 1245 | friend constexpr month_day_last | |
| 1246 | operator/(int __m, last_spec) noexcept; | |
| 1247 | ||
| 1248 | friend constexpr month_day_last | |
| 1249 | operator/(last_spec, int __m) noexcept; | |
| 1250 | }; | |
| 1251 | ||
| 1252 | inline constexpr last_spec last{}; | |
| 1253 | ||
| 1254 | namespace __detail | |
| 1255 | { | |
| 1256 | // Compute the remainder of the Euclidean division of __n divided by __d. | |
| 1257 | // Euclidean division truncates toward negative infinity and always | |
| 1258 | // produces a remainder in the range of [0,__d-1] (whereas standard | |
| 1259 | // division truncates toward zero and yields a nonpositive remainder | |
| 1260 | // for negative __n). | |
| 1261 | constexpr unsigned | |
| 1262 | __modulo(long long __n, unsigned __d) | |
| cd1464db | 1263 | { |
| 03d5044b PP |
1264 | if (__n >= 0) |
| 1265 | return __n % __d; | |
| 1266 | else | |
| 1267 | return (__d + (__n % __d)) % __d; | |
| cd1464db | 1268 | } |
| 1c9f675f | 1269 | |
| 03d5044b PP |
1270 | inline constexpr unsigned __days_per_month[12] |
| 1271 | = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
| 1c9f675f | 1272 | |
| 03d5044b PP |
1273 | inline constexpr unsigned __last_day[12] |
| 1274 | = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
| 1275 | } | |
| 88c4d6b7 | 1276 | |
| 03d5044b | 1277 | // DAY |
| 1c9f675f | 1278 | |
| 03d5044b PP |
1279 | class day |
| 1280 | { | |
| 1281 | private: | |
| 1282 | unsigned char _M_d; | |
| 1c9f675f | 1283 | |
| 03d5044b PP |
1284 | public: |
| 1285 | day() = default; | |
| 1c9f675f | 1286 | |
| 03d5044b PP |
1287 | explicit constexpr |
| 1288 | day(unsigned __d) noexcept | |
| 1289 | : _M_d(__d) | |
| 1290 | { } | |
| 1c9f675f | 1291 | |
| 03d5044b PP |
1292 | constexpr day& |
| 1293 | operator++() noexcept | |
| 1294 | { | |
| 1295 | ++_M_d; | |
| 1296 | return *this; | |
| 1297 | } | |
| 1c9f675f | 1298 | |
| 03d5044b PP |
1299 | constexpr day |
| 1300 | operator++(int) noexcept | |
| 1301 | { | |
| 1302 | auto __ret = *this; | |
| 1303 | ++(*this); | |
| 1304 | return __ret; | |
| 1305 | } | |
| 1c9f675f | 1306 | |
| 03d5044b PP |
1307 | constexpr day& |
| 1308 | operator--() noexcept | |
| 1309 | { | |
| 1310 | --_M_d; | |
| 1311 | return *this; | |
| 1312 | } | |
| 1c9f675f | 1313 | |
| 03d5044b PP |
1314 | constexpr day |
| 1315 | operator--(int) noexcept | |
| 1316 | { | |
| 1317 | auto __ret = *this; | |
| 1318 | --(*this); | |
| 1319 | return __ret; | |
| 1320 | } | |
| 88c4d6b7 | 1321 | |
| 03d5044b PP |
1322 | constexpr day& |
| 1323 | operator+=(const days& __d) noexcept | |
| 1324 | { | |
| 1325 | *this = *this + __d; | |
| 1326 | return *this; | |
| 1327 | } | |
| 88c4d6b7 | 1328 | |
| 03d5044b PP |
1329 | constexpr day& |
| 1330 | operator-=(const days& __d) noexcept | |
| 1331 | { | |
| 1332 | *this = *this - __d; | |
| 1333 | return *this; | |
| 1334 | } | |
| 88c4d6b7 | 1335 | |
| 03d5044b PP |
1336 | constexpr explicit |
| 1337 | operator unsigned() const noexcept | |
| 1338 | { return _M_d; } | |
| 88c4d6b7 | 1339 | |
| 03d5044b PP |
1340 | constexpr bool |
| 1341 | ok() const noexcept | |
| 1342 | { return 1 <= _M_d && _M_d <= 31; } | |
| 1343 | ||
| 1344 | friend constexpr bool | |
| 1345 | operator==(const day& __x, const day& __y) noexcept | |
| 1346 | { return unsigned{__x} == unsigned{__y}; } | |
| 1347 | ||
| 1348 | friend constexpr strong_ordering | |
| 1349 | operator<=>(const day& __x, const day& __y) noexcept | |
| 1350 | { return unsigned{__x} <=> unsigned{__y}; } | |
| 1351 | ||
| 1352 | friend constexpr day | |
| 1353 | operator+(const day& __x, const days& __y) noexcept | |
| 1354 | { return day(unsigned{__x} + __y.count()); } | |
| 1355 | ||
| 1356 | friend constexpr day | |
| 1357 | operator+(const days& __x, const day& __y) noexcept | |
| 1358 | { return __y + __x; } | |
| 1359 | ||
| 1360 | friend constexpr day | |
| 1361 | operator-(const day& __x, const days& __y) noexcept | |
| 1362 | { return __x + -__y; } | |
| 1363 | ||
| 1364 | friend constexpr days | |
| 1365 | operator-(const day& __x, const day& __y) noexcept | |
| 1366 | { return days{int(unsigned{__x}) - int(unsigned{__y})}; } | |
| 1367 | ||
| 1368 | friend constexpr month_day | |
| 1369 | operator/(const month& __m, const day& __d) noexcept; | |
| 1370 | ||
| 1371 | friend constexpr month_day | |
| 1372 | operator/(int __m, const day& __d) noexcept; | |
| 1373 | ||
| 1374 | friend constexpr month_day | |
| 1375 | operator/(const day& __d, const month& __m) noexcept; | |
| 1376 | ||
| 1377 | friend constexpr month_day | |
| 1378 | operator/(const day& __d, int __m) noexcept; | |
| 1379 | ||
| 1380 | friend constexpr year_month_day | |
| 1381 | operator/(const year_month& __ym, const day& __d) noexcept; | |
| 1382 | ||
| 1383 | // TODO: Implement operator<<, to_stream, from_stream. | |
| 1384 | }; | |
| 1385 | ||
| 1386 | // MONTH | |
| 1387 | ||
| 1388 | class month | |
| 1389 | { | |
| 1390 | private: | |
| 1391 | unsigned char _M_m; | |
| 1392 | ||
| 1393 | public: | |
| 1394 | month() = default; | |
| 1395 | ||
| 1396 | explicit constexpr | |
| 1397 | month(unsigned __m) noexcept | |
| 1398 | : _M_m(__m) | |
| 1399 | { } | |
| 1400 | ||
| 1401 | constexpr month& | |
| 1402 | operator++() noexcept | |
| 1403 | { | |
| 1404 | *this += months{1}; | |
| 1405 | return *this; | |
| 1406 | } | |
| 1407 | ||
| 1408 | constexpr month | |
| 1409 | operator++(int) noexcept | |
| 1410 | { | |
| 1411 | auto __ret = *this; | |
| 1412 | ++(*this); | |
| 1413 | return __ret; | |
| 1414 | } | |
| 1415 | ||
| 1416 | constexpr month& | |
| 1417 | operator--() noexcept | |
| 1418 | { | |
| 1419 | *this -= months{1}; | |
| 1420 | return *this; | |
| 1421 | } | |
| 1422 | ||
| 1423 | constexpr month | |
| 1424 | operator--(int) noexcept | |
| 1425 | { | |
| 1426 | auto __ret = *this; | |
| 1427 | --(*this); | |
| 1428 | return __ret; | |
| 1429 | } | |
| 1430 | ||
| 1431 | constexpr month& | |
| 1432 | operator+=(const months& __m) noexcept | |
| 1433 | { | |
| 1434 | *this = *this + __m; | |
| 1435 | return *this; | |
| 1436 | } | |
| 1437 | ||
| 1438 | constexpr month& | |
| 1439 | operator-=(const months& __m) noexcept | |
| 1440 | { | |
| 1441 | *this = *this - __m; | |
| 1442 | return *this; | |
| 1443 | } | |
| 1444 | ||
| 1445 | explicit constexpr | |
| 1446 | operator unsigned() const noexcept | |
| 1447 | { return _M_m; } | |
| 1448 | ||
| 1449 | constexpr bool | |
| 1450 | ok() const noexcept | |
| 1451 | { return 1 <= _M_m && _M_m <= 12; } | |
| 1452 | ||
| 1453 | friend constexpr bool | |
| 1454 | operator==(const month& __x, const month& __y) noexcept | |
| 1455 | { return unsigned{__x} == unsigned{__y}; } | |
| 1456 | ||
| 1457 | friend constexpr strong_ordering | |
| 1458 | operator<=>(const month& __x, const month& __y) noexcept | |
| 1459 | { return unsigned{__x} <=> unsigned{__y}; } | |
| 1460 | ||
| 1461 | friend constexpr month | |
| 1462 | operator+(const month& __x, const months& __y) noexcept | |
| 1463 | { | |
| 1464 | auto __n = static_cast<long long>(unsigned{__x}) + (__y.count() - 1); | |
| 1465 | return month{__detail::__modulo(__n, 12) + 1}; | |
| 1466 | } | |
| 1467 | ||
| 1468 | friend constexpr month | |
| 1469 | operator+(const months& __x, const month& __y) noexcept | |
| 1470 | { return __y + __x; } | |
| 1471 | ||
| 1472 | friend constexpr month | |
| 1473 | operator-(const month& __x, const months& __y) noexcept | |
| 1474 | { return __x + -__y; } | |
| 1475 | ||
| 1476 | friend constexpr months | |
| 1477 | operator-(const month& __x, const month& __y) noexcept | |
| 1478 | { | |
| 1479 | const auto __dm = int(unsigned(__x)) - int(unsigned(__y)); | |
| 1480 | return months{__dm < 0 ? 12 + __dm : __dm}; | |
| 1481 | } | |
| 1482 | ||
| 1483 | friend constexpr year_month | |
| 1484 | operator/(const year& __y, const month& __m) noexcept; | |
| 1485 | ||
| 1486 | friend constexpr month_day | |
| 1487 | operator/(const month& __m, int __d) noexcept; | |
| 1488 | ||
| 1489 | friend constexpr month_day_last | |
| 1490 | operator/(const month& __m, last_spec) noexcept; | |
| 1491 | ||
| 1492 | friend constexpr month_day_last | |
| 1493 | operator/(last_spec, const month& __m) noexcept; | |
| 1494 | ||
| 1495 | friend constexpr month_weekday | |
| 1496 | operator/(const month& __m, const weekday_indexed& __wdi) noexcept; | |
| 1497 | ||
| 1498 | friend constexpr month_weekday | |
| 1499 | operator/(const weekday_indexed& __wdi, const month& __m) noexcept; | |
| 1500 | ||
| 1501 | friend constexpr month_weekday_last | |
| 1502 | operator/(const month& __m, const weekday_last& __wdl) noexcept; | |
| 1503 | ||
| 1504 | friend constexpr month_weekday_last | |
| 1505 | operator/(const weekday_last& __wdl, const month& __m) noexcept; | |
| 1506 | ||
| 1507 | // TODO: Implement operator<<, to_stream, from_stream. | |
| 1508 | }; | |
| 1509 | ||
| 1510 | inline constexpr month January{1}; | |
| 1511 | inline constexpr month February{2}; | |
| 1512 | inline constexpr month March{3}; | |
| 1513 | inline constexpr month April{4}; | |
| 1514 | inline constexpr month May{5}; | |
| 1515 | inline constexpr month June{6}; | |
| 1516 | inline constexpr month July{7}; | |
| 1517 | inline constexpr month August{8}; | |
| 1518 | inline constexpr month September{9}; | |
| 1519 | inline constexpr month October{10}; | |
| 1520 | inline constexpr month November{11}; | |
| 1521 | inline constexpr month December{12}; | |
| 1522 | ||
| 1523 | // YEAR | |
| 1524 | ||
| 1525 | class year | |
| 1526 | { | |
| 1527 | private: | |
| 1528 | short _M_y; | |
| 1529 | ||
| 1530 | public: | |
| 1531 | year() = default; | |
| 1532 | ||
| 1533 | explicit constexpr | |
| 1534 | year(int __y) noexcept | |
| 1535 | : _M_y{static_cast<short>(__y)} | |
| 1536 | { } | |
| 1537 | ||
| 1538 | static constexpr year | |
| 1539 | min() noexcept | |
| 1540 | { return year{-32767}; } | |
| 1541 | ||
| 1542 | static constexpr year | |
| 1543 | max() noexcept | |
| 1544 | { return year{32767}; } | |
| 1545 | ||
| 1546 | constexpr year& | |
| 1547 | operator++() noexcept | |
| 1548 | { | |
| 1549 | ++_M_y; | |
| 1550 | return *this; | |
| 1551 | } | |
| 1552 | ||
| 1553 | constexpr year | |
| 1554 | operator++(int) noexcept | |
| 1555 | { | |
| 1556 | auto __ret = *this; | |
| 1557 | ++(*this); | |
| 1558 | return __ret; | |
| 1559 | } | |
| 1560 | ||
| 1561 | constexpr year& | |
| 1562 | operator--() noexcept | |
| 1563 | { | |
| 1564 | --_M_y; | |
| 1565 | return *this; | |
| 1566 | } | |
| 1567 | ||
| 1568 | constexpr year | |
| 1569 | operator--(int) noexcept | |
| 1570 | { | |
| 1571 | auto __ret = *this; | |
| 1572 | --(*this); | |
| 1573 | return __ret; | |
| 1574 | } | |
| 1575 | ||
| 1576 | constexpr year& | |
| 1577 | operator+=(const years& __y) noexcept | |
| 1578 | { | |
| 1579 | *this = *this + __y; | |
| 1580 | return *this; | |
| 1581 | } | |
| 1582 | ||
| 1583 | constexpr year& | |
| 1584 | operator-=(const years& __y) noexcept | |
| 1585 | { | |
| 1586 | *this = *this - __y; | |
| 1587 | return *this; | |
| 1588 | } | |
| 1589 | ||
| 1590 | constexpr year | |
| 1591 | operator+() const noexcept | |
| 1592 | { return *this; } | |
| 1593 | ||
| 1594 | constexpr year | |
| 1595 | operator-() const noexcept | |
| 1596 | { return year{-_M_y}; } | |
| 1597 | ||
| 1598 | constexpr bool | |
| 1599 | is_leap() const noexcept | |
| 1600 | { return _M_y % 4 == 0 && (_M_y % 100 != 0 || _M_y % 400 == 0); } | |
| 1601 | ||
| 1602 | explicit constexpr | |
| 1603 | operator int() const noexcept | |
| 1604 | { return _M_y; } | |
| 1605 | ||
| 1606 | constexpr bool | |
| 1607 | ok() const noexcept | |
| 1608 | { return min()._M_y <= _M_y && _M_y <= max()._M_y; } | |
| 1609 | ||
| 1610 | friend constexpr bool | |
| 1611 | operator==(const year& __x, const year& __y) noexcept | |
| 1612 | { return int{__x} == int{__y}; } | |
| 1613 | ||
| 1614 | friend constexpr strong_ordering | |
| 1615 | operator<=>(const year& __x, const year& __y) noexcept | |
| 1616 | { return int{__x} <=> int{__y}; } | |
| 1617 | ||
| 1618 | friend constexpr year | |
| 1619 | operator+(const year& __x, const years& __y) noexcept | |
| b6b9fd4a | 1620 | { return year{int{__x} + static_cast<int>(__y.count())}; } |
| 03d5044b PP |
1621 | |
| 1622 | friend constexpr year | |
| 1623 | operator+(const years& __x, const year& __y) noexcept | |
| 1624 | { return __y + __x; } | |
| 1625 | ||
| 1626 | friend constexpr year | |
| 1627 | operator-(const year& __x, const years& __y) noexcept | |
| 1628 | { return __x + -__y; } | |
| 1629 | ||
| 1630 | friend constexpr years | |
| 1631 | operator-(const year& __x, const year& __y) noexcept | |
| 1632 | { return years{int{__x} - int{__y}}; } | |
| 1633 | ||
| 1634 | friend constexpr year_month | |
| 1635 | operator/(const year& __y, int __m) noexcept; | |
| 1636 | ||
| 1637 | friend constexpr year_month_day | |
| 1638 | operator/(const year& __y, const month_day& __md) noexcept; | |
| 1639 | ||
| 1640 | friend constexpr year_month_day | |
| 1641 | operator/(const month_day& __md, const year& __y) noexcept; | |
| 1642 | ||
| 1643 | friend constexpr year_month_day_last | |
| 1644 | operator/(const year& __y, const month_day_last& __mdl) noexcept; | |
| 1645 | ||
| 1646 | friend constexpr year_month_day_last | |
| 1647 | operator/(const month_day_last& __mdl, const year& __y) noexcept; | |
| 1648 | ||
| 1649 | friend constexpr year_month_weekday | |
| 1650 | operator/(const year& __y, const month_weekday& __mwd) noexcept; | |
| 1651 | ||
| 1652 | friend constexpr year_month_weekday | |
| 1653 | operator/(const month_weekday& __mwd, const year& __y) noexcept; | |
| 1654 | ||
| 1655 | friend constexpr year_month_weekday_last | |
| 1656 | operator/(const year& __y, const month_weekday_last& __mwdl) noexcept; | |
| 1657 | ||
| 1658 | friend constexpr year_month_weekday_last | |
| 1659 | operator/(const month_weekday_last& __mwdl, const year& __y) noexcept; | |
| 1660 | ||
| 1661 | // TODO: Implement operator<<, to_stream, from_stream. | |
| 1662 | }; | |
| 1663 | ||
| 1664 | // WEEKDAY | |
| 1665 | ||
| 1666 | class weekday | |
| 1667 | { | |
| 1668 | private: | |
| 1669 | unsigned char _M_wd; | |
| 1670 | ||
| 1671 | static constexpr weekday | |
| 1672 | _S_from_days(const days& __d) | |
| 1673 | { | |
| 1674 | auto __n = __d.count(); | |
| 1675 | return weekday(__n >= -4 ? (__n + 4) % 7 : (__n + 5) % 7 + 6); | |
| 1676 | } | |
| 1677 | ||
| 1678 | public: | |
| 1679 | weekday() = default; | |
| 1680 | ||
| 1681 | explicit constexpr | |
| 1682 | weekday(unsigned __wd) noexcept | |
| 1683 | : _M_wd(__wd == 7 ? 0 : __wd) // __wd % 7 ? | |
| 1684 | { } | |
| 1685 | ||
| 1686 | constexpr | |
| 1687 | weekday(const sys_days& __dp) noexcept | |
| 1688 | : weekday{_S_from_days(__dp.time_since_epoch())} | |
| 1689 | { } | |
| 1690 | ||
| 1691 | explicit constexpr | |
| 1692 | weekday(const local_days& __dp) noexcept | |
| 1693 | : weekday{sys_days{__dp.time_since_epoch()}} | |
| 1694 | { } | |
| 1695 | ||
| 1696 | constexpr weekday& | |
| 1697 | operator++() noexcept | |
| 1698 | { | |
| 1699 | *this += days{1}; | |
| 1700 | return *this; | |
| 1701 | } | |
| 1702 | ||
| 1703 | constexpr weekday | |
| 1704 | operator++(int) noexcept | |
| 1705 | { | |
| 1706 | auto __ret = *this; | |
| 1707 | ++(*this); | |
| 1708 | return __ret; | |
| 1709 | } | |
| 1710 | ||
| 1711 | constexpr weekday& | |
| 1712 | operator--() noexcept | |
| 1713 | { | |
| 1714 | *this -= days{1}; | |
| 1715 | return *this; | |
| 1716 | } | |
| 1717 | ||
| 1718 | constexpr weekday | |
| 1719 | operator--(int) noexcept | |
| 1720 | { | |
| 1721 | auto __ret = *this; | |
| 1722 | --(*this); | |
| 1723 | return __ret; | |
| 1724 | } | |
| 1725 | ||
| 1726 | constexpr weekday& | |
| 1727 | operator+=(const days& __d) noexcept | |
| 1728 | { | |
| 1729 | *this = *this + __d; | |
| 1730 | return *this; | |
| 1731 | } | |
| 1732 | ||
| 1733 | constexpr weekday& | |
| 1734 | operator-=(const days& __d) noexcept | |
| 1735 | { | |
| 1736 | *this = *this - __d; | |
| 1737 | return *this; | |
| 1738 | } | |
| 1739 | ||
| 1740 | constexpr unsigned | |
| 1741 | c_encoding() const noexcept | |
| 1742 | { return _M_wd; } | |
| 1743 | ||
| 1744 | constexpr unsigned | |
| 1745 | iso_encoding() const noexcept | |
| 1746 | { return _M_wd == 0u ? 7u : _M_wd; } | |
| 1747 | ||
| 1748 | constexpr bool | |
| 1749 | ok() const noexcept | |
| 1750 | { return _M_wd <= 6; } | |
| 1751 | ||
| 1752 | constexpr weekday_indexed | |
| 1753 | operator[](unsigned __index) const noexcept; | |
| 1754 | ||
| 1755 | constexpr weekday_last | |
| 1756 | operator[](last_spec) const noexcept; | |
| 1757 | ||
| 1758 | friend constexpr bool | |
| 1759 | operator==(const weekday& __x, const weekday& __y) noexcept | |
| 1760 | { return __x._M_wd == __y._M_wd; } | |
| 1761 | ||
| 1762 | friend constexpr weekday | |
| 1763 | operator+(const weekday& __x, const days& __y) noexcept | |
| 1764 | { | |
| 1765 | auto __n = static_cast<long long>(__x._M_wd) + __y.count(); | |
| 1766 | return weekday{__detail::__modulo(__n, 7)}; | |
| 1767 | } | |
| 1768 | ||
| 1769 | friend constexpr weekday | |
| 1770 | operator+(const days& __x, const weekday& __y) noexcept | |
| 1771 | { return __y + __x; } | |
| 1772 | ||
| 1773 | friend constexpr weekday | |
| 1774 | operator-(const weekday& __x, const days& __y) noexcept | |
| 1775 | { return __x + -__y; } | |
| 1776 | ||
| 1777 | friend constexpr days | |
| 1778 | operator-(const weekday& __x, const weekday& __y) noexcept | |
| 1779 | { | |
| 1780 | auto __n = static_cast<long long>(__x._M_wd) - __y._M_wd; | |
| 1781 | return days{__detail::__modulo(__n, 7)}; | |
| 1782 | } | |
| 1783 | ||
| 1784 | // TODO: operator<<, from_stream. | |
| 1785 | }; | |
| 1786 | ||
| 1787 | inline constexpr weekday Sunday{0}; | |
| 1788 | inline constexpr weekday Monday{1}; | |
| 1789 | inline constexpr weekday Tuesday{2}; | |
| 1790 | inline constexpr weekday Wednesday{3}; | |
| 1791 | inline constexpr weekday Thursday{4}; | |
| 1792 | inline constexpr weekday Friday{5}; | |
| 1793 | inline constexpr weekday Saturday{6}; | |
| 1794 | ||
| 1795 | // WEEKDAY_INDEXED | |
| 1796 | ||
| 1797 | class weekday_indexed | |
| 1798 | { | |
| 1799 | private: | |
| 1800 | chrono::weekday _M_wd; | |
| 1801 | unsigned char _M_index; | |
| 1802 | ||
| 1803 | public: | |
| 1804 | weekday_indexed() = default; | |
| 1805 | ||
| 1806 | constexpr | |
| 1807 | weekday_indexed(const chrono::weekday& __wd, unsigned __index) noexcept | |
| 1808 | : _M_wd(__wd), _M_index(__index) | |
| 1809 | { } | |
| 1810 | ||
| 1811 | constexpr chrono::weekday | |
| 1812 | weekday() const noexcept | |
| 1813 | { return _M_wd; } | |
| 1814 | ||
| 1815 | constexpr unsigned | |
| 1816 | index() const noexcept | |
| 1817 | { return _M_index; }; | |
| 1818 | ||
| 1819 | constexpr bool | |
| 1820 | ok() const noexcept | |
| 1821 | { return _M_wd.ok() && 1 <= _M_index && _M_index <= 5; } | |
| 1822 | ||
| 1823 | friend constexpr bool | |
| 1824 | operator==(const weekday_indexed& __x, const weekday_indexed& __y) noexcept | |
| 1825 | { return __x.weekday() == __y.weekday() && __x.index() == __y.index(); } | |
| 1826 | ||
| 1827 | friend constexpr month_weekday | |
| 1828 | operator/(const month& __m, const weekday_indexed& __wdi) noexcept; | |
| 1829 | ||
| 1830 | friend constexpr month_weekday | |
| 1831 | operator/(int __m, const weekday_indexed& __wdi) noexcept; | |
| 1832 | ||
| 1833 | friend constexpr month_weekday | |
| 1834 | operator/(const weekday_indexed& __wdi, const month& __m) noexcept; | |
| 1835 | ||
| 1836 | friend constexpr month_weekday | |
| 1837 | operator/(const weekday_indexed& __wdi, int __m) noexcept; | |
| 1838 | ||
| 1839 | friend constexpr year_month_weekday | |
| 1840 | operator/(const year_month& __ym, const weekday_indexed& __wdi) noexcept; | |
| 1841 | ||
| 1842 | // TODO: Implement operator<<. | |
| 1843 | }; | |
| 1844 | ||
| 1845 | constexpr weekday_indexed | |
| 1846 | weekday::operator[](unsigned __index) const noexcept | |
| 1847 | { return {*this, __index}; } | |
| 1848 | ||
| 1849 | // WEEKDAY_LAST | |
| 1850 | ||
| 1851 | class weekday_last | |
| 1852 | { | |
| 1853 | private: | |
| 1854 | chrono::weekday _M_wd; | |
| 1855 | ||
| 1856 | public: | |
| 1857 | explicit constexpr | |
| 1858 | weekday_last(const chrono::weekday& __wd) noexcept | |
| 1859 | : _M_wd{__wd} | |
| 1860 | { } | |
| 1861 | ||
| 1862 | constexpr chrono::weekday | |
| 1863 | weekday() const noexcept | |
| 1864 | { return _M_wd; } | |
| 1865 | ||
| 1866 | constexpr bool | |
| 1867 | ok() const noexcept | |
| 1868 | { return _M_wd.ok(); } | |
| 1869 | ||
| 1870 | friend constexpr bool | |
| 1871 | operator==(const weekday_last& __x, const weekday_last& __y) noexcept | |
| 1872 | { return __x.weekday() == __y.weekday(); } | |
| 1873 | ||
| 1874 | friend constexpr month_weekday_last | |
| 1875 | operator/(int __m, const weekday_last& __wdl) noexcept; | |
| 1876 | ||
| 1877 | friend constexpr month_weekday_last | |
| 1878 | operator/(const weekday_last& __wdl, int __m) noexcept; | |
| 1879 | ||
| 1880 | friend constexpr year_month_weekday_last | |
| 1881 | operator/(const year_month& __ym, const weekday_last& __wdl) noexcept; | |
| 1882 | ||
| 1883 | // TODO: Implement operator<<. | |
| 1884 | }; | |
| 1885 | ||
| 1886 | constexpr weekday_last | |
| 1887 | weekday::operator[](last_spec) const noexcept | |
| 1888 | { return weekday_last{*this}; } | |
| 1889 | ||
| 1890 | // MONTH_DAY | |
| 1891 | ||
| 1892 | class month_day | |
| 1893 | { | |
| 1894 | private: | |
| 1895 | chrono::month _M_m; | |
| 1896 | chrono::day _M_d; | |
| 1897 | ||
| 1898 | public: | |
| 1899 | month_day() = default; | |
| 1900 | ||
| 1901 | constexpr | |
| 1902 | month_day(const chrono::month& __m, const chrono::day& __d) noexcept | |
| 1903 | : _M_m{__m}, _M_d{__d} | |
| 1904 | { } | |
| 1905 | ||
| 1906 | constexpr chrono::month | |
| 1907 | month() const noexcept | |
| 1908 | { return _M_m; } | |
| 1909 | ||
| 1910 | constexpr chrono::day | |
| 1911 | day() const noexcept | |
| 1912 | { return _M_d; } | |
| 1913 | ||
| 1914 | constexpr bool | |
| 1915 | ok() const noexcept | |
| 1916 | { | |
| 1917 | return _M_m.ok() | |
| 1918 | && 1u <= unsigned(_M_d) | |
| 1919 | && unsigned(_M_d) <= __detail::__days_per_month[unsigned(_M_m) - 1]; | |
| 1920 | } | |
| 1921 | ||
| 1922 | friend constexpr bool | |
| 1923 | operator==(const month_day& __x, const month_day& __y) noexcept | |
| 1924 | { return __x.month() == __y.month() && __x.day() == __y.day(); } | |
| 1925 | ||
| 1926 | friend constexpr strong_ordering | |
| 1927 | operator<=>(const month_day& __x, const month_day& __y) noexcept | |
| 1928 | = default; | |
| 1929 | ||
| 1930 | friend constexpr month_day | |
| 1931 | operator/(const chrono::month& __m, const chrono::day& __d) noexcept | |
| 1932 | { return {__m, __d}; } | |
| 1933 | ||
| 1934 | friend constexpr month_day | |
| 1935 | operator/(const chrono::month& __m, int __d) noexcept | |
| 1936 | { return {__m, chrono::day(unsigned(__d))}; } | |
| 1937 | ||
| 1938 | friend constexpr month_day | |
| 1939 | operator/(int __m, const chrono::day& __d) noexcept | |
| 1940 | { return {chrono::month(unsigned(__m)), __d}; } | |
| 1941 | ||
| 1942 | friend constexpr month_day | |
| 1943 | operator/(const chrono::day& __d, const chrono::month& __m) noexcept | |
| 1944 | { return {__m, __d}; } | |
| 1945 | ||
| 1946 | friend constexpr month_day | |
| 1947 | operator/(const chrono::day& __d, int __m) noexcept | |
| 1948 | { return {chrono::month(unsigned(__m)), __d}; } | |
| 1949 | ||
| 1950 | friend constexpr year_month_day | |
| 1951 | operator/(int __y, const month_day& __md) noexcept; | |
| 1952 | ||
| 1953 | friend constexpr year_month_day | |
| 1954 | operator/(const month_day& __md, int __y) noexcept; | |
| 1955 | ||
| 1956 | // TODO: Implement operator<<, from_stream. | |
| 1957 | }; | |
| 1958 | ||
| 1959 | // MONTH_DAY_LAST | |
| 1960 | ||
| 1961 | class month_day_last | |
| 1962 | { | |
| 1963 | private: | |
| 1964 | chrono::month _M_m; | |
| 1965 | ||
| 1966 | public: | |
| 1967 | explicit constexpr | |
| 1968 | month_day_last(const chrono::month& __m) noexcept | |
| 1969 | : _M_m{__m} | |
| 1970 | { } | |
| 1971 | ||
| 1972 | constexpr chrono::month | |
| 1973 | month() const noexcept | |
| 1974 | { return _M_m; } | |
| 1975 | ||
| 1976 | constexpr bool | |
| 1977 | ok() const noexcept | |
| 1978 | { return _M_m.ok(); } | |
| 1979 | ||
| 1980 | friend constexpr bool | |
| 1981 | operator==(const month_day_last& __x, const month_day_last& __y) noexcept | |
| 1982 | { return __x.month() == __y.month(); } | |
| 1983 | ||
| 1984 | friend constexpr strong_ordering | |
| 1985 | operator<=>(const month_day_last& __x, const month_day_last& __y) noexcept | |
| 1986 | = default; | |
| 1987 | ||
| 1988 | friend constexpr month_day_last | |
| 1989 | operator/(const chrono::month& __m, last_spec) noexcept | |
| 1990 | { return month_day_last{__m}; } | |
| 1991 | ||
| 1992 | friend constexpr month_day_last | |
| 1993 | operator/(int __m, last_spec) noexcept | |
| 1994 | { return chrono::month(unsigned(__m)) / last; } | |
| 1995 | ||
| 1996 | friend constexpr month_day_last | |
| 1997 | operator/(last_spec, const chrono::month& __m) noexcept | |
| 1998 | { return __m / last; } | |
| 1999 | ||
| 2000 | friend constexpr month_day_last | |
| 2001 | operator/(last_spec, int __m) noexcept | |
| 2002 | { return __m / last; } | |
| 2003 | ||
| 2004 | friend constexpr year_month_day_last | |
| 2005 | operator/(int __y, const month_day_last& __mdl) noexcept; | |
| 2006 | ||
| 2007 | friend constexpr year_month_day_last | |
| 2008 | operator/(const month_day_last& __mdl, int __y) noexcept; | |
| 2009 | ||
| 2010 | // TODO: Implement operator<<. | |
| 2011 | }; | |
| 2012 | ||
| 2013 | // MONTH_WEEKDAY | |
| 2014 | ||
| 2015 | class month_weekday | |
| 2016 | { | |
| 2017 | private: | |
| 2018 | chrono::month _M_m; | |
| 2019 | chrono::weekday_indexed _M_wdi; | |
| 2020 | ||
| 2021 | public: | |
| 2022 | constexpr | |
| 2023 | month_weekday(const chrono::month& __m, | |
| 2024 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2025 | : _M_m{__m}, _M_wdi{__wdi} | |
| 2026 | { } | |
| 2027 | ||
| 2028 | constexpr chrono::month | |
| 2029 | month() const noexcept | |
| 2030 | { return _M_m; } | |
| 2031 | ||
| 2032 | constexpr chrono::weekday_indexed | |
| 2033 | weekday_indexed() const noexcept | |
| 2034 | { return _M_wdi; } | |
| 2035 | ||
| 2036 | constexpr bool | |
| 2037 | ok() const noexcept | |
| 2038 | { return _M_m.ok() && _M_wdi.ok(); } | |
| 2039 | ||
| 2040 | friend constexpr bool | |
| 2041 | operator==(const month_weekday& __x, const month_weekday& __y) noexcept | |
| 2042 | { | |
| 2043 | return __x.month() == __y.month() | |
| 2044 | && __x.weekday_indexed() == __y.weekday_indexed(); | |
| 2045 | } | |
| 2046 | ||
| 2047 | friend constexpr month_weekday | |
| 2048 | operator/(const chrono::month& __m, | |
| 2049 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2050 | { return {__m, __wdi}; } | |
| 2051 | ||
| 2052 | friend constexpr month_weekday | |
| 2053 | operator/(int __m, const chrono::weekday_indexed& __wdi) noexcept | |
| 2054 | { return chrono::month(unsigned(__m)) / __wdi; } | |
| 2055 | ||
| 2056 | friend constexpr month_weekday | |
| 2057 | operator/(const chrono::weekday_indexed& __wdi, | |
| 2058 | const chrono::month& __m) noexcept | |
| 2059 | { return __m / __wdi; } | |
| 2060 | ||
| 2061 | friend constexpr month_weekday | |
| 2062 | operator/(const chrono::weekday_indexed& __wdi, int __m) noexcept | |
| 2063 | { return __m / __wdi; } | |
| 2064 | ||
| 2065 | friend constexpr year_month_weekday | |
| 2066 | operator/(int __y, const month_weekday& __mwd) noexcept; | |
| 2067 | ||
| 2068 | friend constexpr year_month_weekday | |
| 2069 | operator/(const month_weekday& __mwd, int __y) noexcept; | |
| 2070 | ||
| 2071 | // TODO: Implement operator<<. | |
| 2072 | }; | |
| 2073 | ||
| 2074 | // MONTH_WEEKDAY_LAST | |
| 2075 | ||
| 2076 | class month_weekday_last | |
| 2077 | { | |
| 2078 | private: | |
| 2079 | chrono::month _M_m; | |
| 2080 | chrono::weekday_last _M_wdl; | |
| 2081 | ||
| 2082 | public: | |
| 2083 | constexpr | |
| 2084 | month_weekday_last(const chrono::month& __m, | |
| 2085 | const chrono::weekday_last& __wdl) noexcept | |
| 2086 | :_M_m{__m}, _M_wdl{__wdl} | |
| 2087 | { } | |
| 2088 | ||
| 2089 | constexpr chrono::month | |
| 2090 | month() const noexcept | |
| 2091 | { return _M_m; } | |
| 2092 | ||
| 2093 | constexpr chrono::weekday_last | |
| 2094 | weekday_last() const noexcept | |
| 2095 | { return _M_wdl; } | |
| 2096 | ||
| 2097 | constexpr bool | |
| 2098 | ok() const noexcept | |
| 2099 | { return _M_m.ok() && _M_wdl.ok(); } | |
| 2100 | ||
| 2101 | friend constexpr bool | |
| 2102 | operator==(const month_weekday_last& __x, | |
| 2103 | const month_weekday_last& __y) noexcept | |
| 2104 | { | |
| 2105 | return __x.month() == __y.month() | |
| 2106 | && __x.weekday_last() == __y.weekday_last(); | |
| 2107 | } | |
| 2108 | ||
| 2109 | friend constexpr month_weekday_last | |
| 2110 | operator/(const chrono::month& __m, | |
| 2111 | const chrono::weekday_last& __wdl) noexcept | |
| 2112 | { return {__m, __wdl}; } | |
| 2113 | ||
| 2114 | friend constexpr month_weekday_last | |
| 2115 | operator/(int __m, const chrono::weekday_last& __wdl) noexcept | |
| 2116 | { return chrono::month(unsigned(__m)) / __wdl; } | |
| 2117 | ||
| 2118 | friend constexpr month_weekday_last | |
| 2119 | operator/(const chrono::weekday_last& __wdl, | |
| 2120 | const chrono::month& __m) noexcept | |
| 2121 | { return __m / __wdl; } | |
| 2122 | ||
| 2123 | friend constexpr month_weekday_last | |
| 2124 | operator/(const chrono::weekday_last& __wdl, int __m) noexcept | |
| 2125 | { return chrono::month(unsigned(__m)) / __wdl; } | |
| 2126 | ||
| 2127 | friend constexpr year_month_weekday_last | |
| 2128 | operator/(int __y, const month_weekday_last& __mwdl) noexcept; | |
| 2129 | ||
| 2130 | friend constexpr year_month_weekday_last | |
| 2131 | operator/(const month_weekday_last& __mwdl, int __y) noexcept; | |
| 2132 | ||
| 2133 | // TODO: Implement operator<<. | |
| 2134 | }; | |
| 2135 | ||
| 2136 | // YEAR_MONTH | |
| 2137 | ||
| 7b743c67 PP |
2138 | namespace __detail |
| 2139 | { | |
| 2140 | // [time.cal.ym], [time.cal.ymd], etc constrain the 'months'-based | |
| 2141 | // addition/subtraction operator overloads like so: | |
| 2142 | // | |
| 2143 | // Constraints: if the argument supplied by the caller for the months | |
| 2144 | // parameter is convertible to years, its implicit conversion sequence | |
| 2145 | // to years is worse than its implicit conversion sequence to months. | |
| 2146 | // | |
| 2147 | // We realize this constraint by templatizing the 'months'-based | |
| 2148 | // overloads (using a dummy defaulted template parameter), so that | |
| 2149 | // overload resolution doesn't select the 'months'-based overload unless | |
| 2150 | // the implicit conversion sequence to 'months' is better than that to | |
| 2151 | // 'years'. | |
| 2152 | using __months_years_conversion_disambiguator = void; | |
| 2153 | } | |
| 2154 | ||
| 03d5044b PP |
2155 | class year_month |
| 2156 | { | |
| 2157 | private: | |
| 2158 | chrono::year _M_y; | |
| 2159 | chrono::month _M_m; | |
| 2160 | ||
| 2161 | public: | |
| 2162 | year_month() = default; | |
| 2163 | ||
| 2164 | constexpr | |
| 2165 | year_month(const chrono::year& __y, const chrono::month& __m) noexcept | |
| 2166 | : _M_y{__y}, _M_m{__m} | |
| 2167 | { } | |
| 2168 | ||
| 2169 | constexpr chrono::year | |
| 2170 | year() const noexcept | |
| 2171 | { return _M_y; } | |
| 2172 | ||
| 2173 | constexpr chrono::month | |
| 2174 | month() const noexcept | |
| 2175 | { return _M_m; } | |
| 2176 | ||
| 7b743c67 PP |
2177 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2178 | constexpr year_month& | |
| 2179 | operator+=(const months& __dm) noexcept | |
| 2180 | { | |
| 2181 | *this = *this + __dm; | |
| 2182 | return *this; | |
| 2183 | } | |
| 03d5044b | 2184 | |
| 7b743c67 PP |
2185 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2186 | constexpr year_month& | |
| 2187 | operator-=(const months& __dm) noexcept | |
| 2188 | { | |
| 2189 | *this = *this - __dm; | |
| 2190 | return *this; | |
| 2191 | } | |
| 03d5044b PP |
2192 | |
| 2193 | constexpr year_month& | |
| 2194 | operator+=(const years& __dy) noexcept | |
| 2195 | { | |
| 2196 | *this = *this + __dy; | |
| 2197 | return *this; | |
| 2198 | } | |
| 2199 | ||
| 2200 | constexpr year_month& | |
| 2201 | operator-=(const years& __dy) noexcept | |
| 2202 | { | |
| 2203 | *this = *this - __dy; | |
| 2204 | return *this; | |
| 2205 | } | |
| 2206 | ||
| 2207 | constexpr bool | |
| 2208 | ok() const noexcept | |
| 2209 | { return _M_y.ok() && _M_m.ok(); } | |
| 2210 | ||
| 2211 | friend constexpr bool | |
| 2212 | operator==(const year_month& __x, const year_month& __y) noexcept | |
| 2213 | { return __x.year() == __y.year() && __x.month() == __y.month(); } | |
| 2214 | ||
| 2215 | friend constexpr strong_ordering | |
| 2216 | operator<=>(const year_month& __x, const year_month& __y) noexcept | |
| 2217 | = default; | |
| 2218 | ||
| 7b743c67 PP |
2219 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2220 | friend constexpr year_month | |
| 2221 | operator+(const year_month& __ym, const months& __dm) noexcept | |
| 2222 | { | |
| 2223 | // TODO: Optimize? | |
| 2224 | auto __m = __ym.month() + __dm; | |
| 71e97161 | 2225 | auto __i = int(unsigned(__ym.month())) - 1 + __dm.count(); |
| 7b743c67 PP |
2226 | auto __y = (__i < 0 |
| 2227 | ? __ym.year() + years{(__i - 11) / 12} | |
| 2228 | : __ym.year() + years{__i / 12}); | |
| 2229 | return __y / __m; | |
| 2230 | } | |
| 03d5044b | 2231 | |
| 7b743c67 PP |
2232 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2233 | friend constexpr year_month | |
| 2234 | operator+(const months& __dm, const year_month& __ym) noexcept | |
| 2235 | { return __ym + __dm; } | |
| 03d5044b | 2236 | |
| 7b743c67 PP |
2237 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2238 | friend constexpr year_month | |
| 2239 | operator-(const year_month& __ym, const months& __dm) noexcept | |
| 2240 | { return __ym + -__dm; } | |
| 03d5044b PP |
2241 | |
| 2242 | friend constexpr months | |
| 2243 | operator-(const year_month& __x, const year_month& __y) noexcept | |
| 2244 | { | |
| 2245 | return (__x.year() - __y.year() | |
| 2246 | + months{static_cast<int>(unsigned{__x.month()}) | |
| 2247 | - static_cast<int>(unsigned{__y.month()})}); | |
| 2248 | } | |
| 2249 | ||
| 2250 | friend constexpr year_month | |
| 2251 | operator+(const year_month& __ym, const years& __dy) noexcept | |
| 2252 | { return (__ym.year() + __dy) / __ym.month(); } | |
| 2253 | ||
| 2254 | friend constexpr year_month | |
| 2255 | operator+(const years& __dy, const year_month& __ym) noexcept | |
| 2256 | { return __ym + __dy; } | |
| 2257 | ||
| 2258 | friend constexpr year_month | |
| 2259 | operator-(const year_month& __ym, const years& __dy) noexcept | |
| 2260 | { return __ym + -__dy; } | |
| 2261 | ||
| 2262 | friend constexpr year_month | |
| 2263 | operator/(const chrono::year& __y, const chrono::month& __m) noexcept | |
| 2264 | { return {__y, __m}; } | |
| 2265 | ||
| 2266 | friend constexpr year_month | |
| 2267 | operator/(const chrono::year& __y, int __m) noexcept | |
| 2268 | { return {__y, chrono::month(unsigned(__m))}; } | |
| 2269 | ||
| 2270 | friend constexpr year_month_day | |
| 2271 | operator/(const year_month& __ym, int __d) noexcept; | |
| 2272 | ||
| 2273 | friend constexpr year_month_day_last | |
| 2274 | operator/(const year_month& __ym, last_spec) noexcept; | |
| 2275 | ||
| 2276 | // TODO: Implement operator<<, from_stream. | |
| 2277 | }; | |
| 2278 | ||
| 2279 | // YEAR_MONTH_DAY | |
| 2280 | ||
| 2281 | class year_month_day | |
| 2282 | { | |
| 2283 | private: | |
| 2284 | chrono::year _M_y; | |
| 2285 | chrono::month _M_m; | |
| 2286 | chrono::day _M_d; | |
| 2287 | ||
| 2288 | static constexpr year_month_day _S_from_days(const days& __dp) noexcept; | |
| 2289 | ||
| 2290 | constexpr days _M_days_since_epoch() const noexcept; | |
| 2291 | ||
| 2292 | public: | |
| 2293 | year_month_day() = default; | |
| 2294 | ||
| 2295 | constexpr | |
| 2296 | year_month_day(const chrono::year& __y, const chrono::month& __m, | |
| 2297 | const chrono::day& __d) noexcept | |
| 2298 | : _M_y{__y}, _M_m{__m}, _M_d{__d} | |
| 2299 | { } | |
| 2300 | ||
| 2301 | constexpr | |
| 2302 | year_month_day(const year_month_day_last& __ymdl) noexcept; | |
| 2303 | ||
| 2304 | constexpr | |
| 2305 | year_month_day(const sys_days& __dp) noexcept | |
| 2306 | : year_month_day(_S_from_days(__dp.time_since_epoch())) | |
| 2307 | { } | |
| 2308 | ||
| 2309 | explicit constexpr | |
| 2310 | year_month_day(const local_days& __dp) noexcept | |
| 2311 | : year_month_day(sys_days{__dp.time_since_epoch()}) | |
| 2312 | { } | |
| 2313 | ||
| 7b743c67 PP |
2314 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2315 | constexpr year_month_day& | |
| 2316 | operator+=(const months& __m) noexcept | |
| 2317 | { | |
| 2318 | *this = *this + __m; | |
| 2319 | return *this; | |
| 2320 | } | |
| 03d5044b | 2321 | |
| 7b743c67 PP |
2322 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2323 | constexpr year_month_day& | |
| 2324 | operator-=(const months& __m) noexcept | |
| 2325 | { | |
| 2326 | *this = *this - __m; | |
| 2327 | return *this; | |
| 2328 | } | |
| 03d5044b PP |
2329 | |
| 2330 | constexpr year_month_day& | |
| 2331 | operator+=(const years& __y) noexcept | |
| 2332 | { | |
| 2333 | *this = *this + __y; | |
| 2334 | return *this; | |
| 2335 | } | |
| 2336 | ||
| 2337 | constexpr year_month_day& | |
| 2338 | operator-=(const years& __y) noexcept | |
| 2339 | { | |
| 2340 | *this = *this - __y; | |
| 2341 | return *this; | |
| 2342 | } | |
| 2343 | ||
| 2344 | constexpr chrono::year | |
| 2345 | year() const noexcept | |
| 2346 | { return _M_y; } | |
| 2347 | ||
| 2348 | constexpr chrono::month | |
| 2349 | month() const noexcept | |
| 2350 | { return _M_m; } | |
| 2351 | ||
| 2352 | constexpr chrono::day | |
| 2353 | day() const noexcept | |
| 2354 | { return _M_d; } | |
| 2355 | ||
| 2356 | constexpr | |
| 2357 | operator sys_days() const noexcept | |
| 2358 | { return sys_days{_M_days_since_epoch()}; } | |
| 2359 | ||
| 2360 | explicit constexpr | |
| 2361 | operator local_days() const noexcept | |
| 2362 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2363 | ||
| 2364 | constexpr bool ok() const noexcept; | |
| 2365 | ||
| 2366 | friend constexpr bool | |
| 2367 | operator==(const year_month_day& __x, const year_month_day& __y) noexcept | |
| 2368 | { | |
| 2369 | return __x.year() == __y.year() | |
| 2370 | && __x.month() == __y.month() | |
| 2371 | && __x.day() == __y.day(); | |
| 2372 | } | |
| 2373 | ||
| 2374 | friend constexpr strong_ordering | |
| 2375 | operator<=>(const year_month_day& __x, const year_month_day& __y) noexcept | |
| 2376 | = default; | |
| 2377 | ||
| 7b743c67 PP |
2378 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2379 | friend constexpr year_month_day | |
| 2380 | operator+(const year_month_day& __ymd, const months& __dm) noexcept | |
| 2381 | { return (__ymd.year() / __ymd.month() + __dm) / __ymd.day(); } | |
| 03d5044b | 2382 | |
| 7b743c67 PP |
2383 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2384 | friend constexpr year_month_day | |
| 2385 | operator+(const months& __dm, const year_month_day& __ymd) noexcept | |
| 2386 | { return __ymd + __dm; } | |
| 03d5044b PP |
2387 | |
| 2388 | friend constexpr year_month_day | |
| 2389 | operator+(const year_month_day& __ymd, const years& __dy) noexcept | |
| 2390 | { return (__ymd.year() + __dy) / __ymd.month() / __ymd.day(); } | |
| 2391 | ||
| 2392 | friend constexpr year_month_day | |
| 2393 | operator+(const years& __dy, const year_month_day& __ymd) noexcept | |
| 2394 | { return __ymd + __dy; } | |
| 2395 | ||
| 7b743c67 PP |
2396 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2397 | friend constexpr year_month_day | |
| 2398 | operator-(const year_month_day& __ymd, const months& __dm) noexcept | |
| 2399 | { return __ymd + -__dm; } | |
| 03d5044b PP |
2400 | |
| 2401 | friend constexpr year_month_day | |
| 2402 | operator-(const year_month_day& __ymd, const years& __dy) noexcept | |
| 2403 | { return __ymd + -__dy; } | |
| 2404 | ||
| 2405 | friend constexpr year_month_day | |
| 2406 | operator/(const year_month& __ym, const chrono::day& __d) noexcept | |
| 2407 | { return {__ym.year(), __ym.month(), __d}; } | |
| 2408 | ||
| 2409 | friend constexpr year_month_day | |
| 2410 | operator/(const year_month& __ym, int __d) noexcept | |
| 2411 | { return __ym / chrono::day{unsigned(__d)}; } | |
| 2412 | ||
| 2413 | friend constexpr year_month_day | |
| 2414 | operator/(const chrono::year& __y, const month_day& __md) noexcept | |
| 2415 | { return __y / __md.month() / __md.day(); } | |
| 2416 | ||
| 2417 | friend constexpr year_month_day | |
| 2418 | operator/(int __y, const month_day& __md) noexcept | |
| 2419 | { return chrono::year{__y} / __md; } | |
| 2420 | ||
| 2421 | friend constexpr year_month_day | |
| 2422 | operator/(const month_day& __md, const chrono::year& __y) noexcept | |
| 2423 | { return __y / __md; } | |
| 2424 | ||
| 2425 | friend constexpr year_month_day | |
| 2426 | operator/(const month_day& __md, int __y) noexcept | |
| 2427 | { return chrono::year(__y) / __md; } | |
| 2428 | ||
| 2429 | // TODO: Implement operator<<, from_stream. | |
| 2430 | }; | |
| 2431 | ||
| 2432 | // Construct from days since 1970/01/01. Magic. | |
| 2433 | constexpr year_month_day | |
| 2434 | year_month_day::_S_from_days(const days& __dp) noexcept | |
| 2435 | { | |
| 2436 | const auto __z = __dp.count() + 719468; | |
| 2437 | const auto __era = (__z >= 0 ? __z : __z - 146096) / 146097; | |
| 2438 | const auto __doe = static_cast<unsigned>(__z - __era * 146097); | |
| 2439 | const auto __yoe | |
| 2440 | = (__doe - __doe / 1460 + __doe / 36524 - __doe / 146096) / 365; | |
| 2441 | const auto __y = static_cast<days::rep>(__yoe) + __era * 400; | |
| 2442 | const auto __doy = __doe - (365 * __yoe + __yoe / 4 - __yoe / 100); | |
| 2443 | const auto __mp = (5 * __doy + 2) / 153; | |
| 2444 | const auto __d = __doy - (153 * __mp + 2) / 5 + 1; | |
| 2445 | const auto __m = __mp < 10 ? __mp + 3 : __mp - 9; | |
| 2446 | return year_month_day{chrono::year(__y + (__m <= 2)), | |
| 2447 | chrono::month(__m), chrono::day(__d)}; | |
| 2448 | } | |
| 2449 | ||
| 2450 | // Days since 1970/01/01. Magic. | |
| 2451 | constexpr days | |
| 2452 | year_month_day::_M_days_since_epoch() const noexcept | |
| 2453 | { | |
| 2454 | const auto __y = static_cast<int>(_M_y) - (_M_m <= February); | |
| 2455 | const auto __m = static_cast<unsigned>(_M_m); | |
| 2456 | const auto __d = static_cast<unsigned>(_M_d); | |
| 2457 | const auto __era = (__y >= 0 ? __y : __y - 399) / 400; | |
| 2458 | // Year of "era" [0, 399]. | |
| 2459 | const auto __yoe = static_cast<unsigned>(__y - __era * 400); | |
| 2460 | // Day of year [0, 365]. | |
| 2461 | const auto __doy = (153 * (__m > 2 ? __m - 3 : __m + 9) + 2) / 5 + __d - 1; | |
| 2462 | // Day of "era" [0, 146096]. | |
| 2463 | const auto __doe = __yoe * 365 + __yoe / 4 - __yoe / 100 + __doy; | |
| 2464 | const auto __days = __era * 146097 + static_cast<int>(__doe) - 719468; | |
| 2465 | return days{__days}; | |
| 2466 | } | |
| 2467 | ||
| 2468 | // YEAR_MONTH_DAY_LAST | |
| 2469 | ||
| 2470 | class year_month_day_last | |
| 2471 | { | |
| 2472 | private: | |
| 2473 | chrono::year _M_y; | |
| 2474 | chrono::month_day_last _M_mdl; | |
| 2475 | ||
| 2476 | public: | |
| 2477 | constexpr | |
| 2478 | year_month_day_last(const chrono::year& __y, | |
| 2479 | const chrono::month_day_last& __mdl) noexcept | |
| 2480 | : _M_y{__y}, _M_mdl{__mdl} | |
| 2481 | { } | |
| 2482 | ||
| 7b743c67 PP |
2483 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2484 | constexpr year_month_day_last& | |
| 2485 | operator+=(const months& __m) noexcept | |
| 2486 | { | |
| 2487 | *this = *this + __m; | |
| 2488 | return *this; | |
| 2489 | } | |
| 03d5044b | 2490 | |
| 7b743c67 PP |
2491 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2492 | constexpr year_month_day_last& | |
| 2493 | operator-=(const months& __m) noexcept | |
| 2494 | { | |
| 2495 | *this = *this - __m; | |
| 2496 | return *this; | |
| 2497 | } | |
| 03d5044b PP |
2498 | |
| 2499 | constexpr year_month_day_last& | |
| 2500 | operator+=(const years& __y) noexcept | |
| 2501 | { | |
| 2502 | *this = *this + __y; | |
| 2503 | return *this; | |
| 2504 | } | |
| 2505 | ||
| 2506 | constexpr year_month_day_last& | |
| 2507 | operator-=(const years& __y) noexcept | |
| 2508 | { | |
| 2509 | *this = *this - __y; | |
| 2510 | return *this; | |
| 2511 | } | |
| 2512 | ||
| 2513 | constexpr chrono::year | |
| 2514 | year() const noexcept | |
| 2515 | { return _M_y; } | |
| 2516 | ||
| 2517 | constexpr chrono::month | |
| 2518 | month() const noexcept | |
| 2519 | { return _M_mdl.month(); } | |
| 2520 | ||
| 2521 | constexpr chrono::month_day_last | |
| 2522 | month_day_last() const noexcept | |
| 2523 | { return _M_mdl; } | |
| 2524 | ||
| 2525 | // Return A day representing the last day of this year, month pair. | |
| 2526 | constexpr chrono::day | |
| 2527 | day() const noexcept | |
| 2528 | { | |
| 2529 | if (!_M_mdl.ok() || (month() == February && _M_y.is_leap())) | |
| 2530 | return chrono::day{29}; | |
| 2531 | return chrono::day{__detail::__last_day[unsigned(month()) - 1]}; | |
| 2532 | } | |
| 2533 | ||
| 2534 | constexpr | |
| 2535 | operator sys_days() const noexcept | |
| 2536 | { return sys_days{year() / month() / day()}; } | |
| 2537 | ||
| 2538 | explicit constexpr | |
| 2539 | operator local_days() const noexcept | |
| 2540 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2541 | ||
| 2542 | constexpr bool | |
| 2543 | ok() const noexcept | |
| 2544 | { return _M_y.ok() && _M_mdl.ok(); } | |
| 2545 | ||
| 2546 | friend constexpr bool | |
| 2547 | operator==(const year_month_day_last& __x, | |
| 2548 | const year_month_day_last& __y) noexcept | |
| 2549 | { | |
| 2550 | return __x.year() == __y.year() | |
| 2551 | && __x.month_day_last() == __y.month_day_last(); | |
| 2552 | } | |
| 2553 | ||
| 2554 | friend constexpr strong_ordering | |
| 2555 | operator<=>(const year_month_day_last& __x, | |
| 2556 | const year_month_day_last& __y) noexcept | |
| 2557 | = default; | |
| 2558 | ||
| 7b743c67 PP |
2559 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2560 | friend constexpr year_month_day_last | |
| 2561 | operator+(const year_month_day_last& __ymdl, | |
| 2562 | const months& __dm) noexcept | |
| 2563 | { return (__ymdl.year() / __ymdl.month() + __dm) / last; } | |
| 03d5044b | 2564 | |
| 7b743c67 PP |
2565 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2566 | friend constexpr year_month_day_last | |
| 2567 | operator+(const months& __dm, | |
| 2568 | const year_month_day_last& __ymdl) noexcept | |
| 2569 | { return __ymdl + __dm; } | |
| 03d5044b | 2570 | |
| 7b743c67 PP |
2571 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2572 | friend constexpr year_month_day_last | |
| 2573 | operator-(const year_month_day_last& __ymdl, | |
| 2574 | const months& __dm) noexcept | |
| 2575 | { return __ymdl + -__dm; } | |
| 03d5044b PP |
2576 | |
| 2577 | friend constexpr year_month_day_last | |
| 2578 | operator+(const year_month_day_last& __ymdl, | |
| 2579 | const years& __dy) noexcept | |
| 2580 | { return {__ymdl.year() + __dy, __ymdl.month_day_last()}; } | |
| 2581 | ||
| 2582 | friend constexpr year_month_day_last | |
| 2583 | operator+(const years& __dy, | |
| 2584 | const year_month_day_last& __ymdl) noexcept | |
| 2585 | { return __ymdl + __dy; } | |
| 2586 | ||
| 2587 | friend constexpr year_month_day_last | |
| 2588 | operator-(const year_month_day_last& __ymdl, | |
| 2589 | const years& __dy) noexcept | |
| 2590 | { return __ymdl + -__dy; } | |
| 2591 | ||
| 2592 | friend constexpr year_month_day_last | |
| 2593 | operator/(const year_month& __ym, last_spec) noexcept | |
| 2594 | { return {__ym.year(), chrono::month_day_last{__ym.month()}}; } | |
| 2595 | ||
| 2596 | friend constexpr year_month_day_last | |
| 2597 | operator/(const chrono::year& __y, | |
| 2598 | const chrono::month_day_last& __mdl) noexcept | |
| 2599 | { return {__y, __mdl}; } | |
| 2600 | ||
| 2601 | friend constexpr year_month_day_last | |
| 2602 | operator/(int __y, const chrono::month_day_last& __mdl) noexcept | |
| 2603 | { return chrono::year(__y) / __mdl; } | |
| 2604 | ||
| 2605 | friend constexpr year_month_day_last | |
| 2606 | operator/(const chrono::month_day_last& __mdl, | |
| 2607 | const chrono::year& __y) noexcept | |
| 2608 | { return __y / __mdl; } | |
| 2609 | ||
| 2610 | friend constexpr year_month_day_last | |
| 2611 | operator/(const chrono::month_day_last& __mdl, int __y) noexcept | |
| 2612 | { return chrono::year(__y) / __mdl; } | |
| 2613 | ||
| 2614 | // TODO: Implement operator<<. | |
| 2615 | }; | |
| 2616 | ||
| 2617 | // year_month_day ctor from year_month_day_last | |
| 2618 | constexpr | |
| 2619 | year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept | |
| 2620 | : _M_y{__ymdl.year()}, _M_m{__ymdl.month()}, _M_d{__ymdl.day()} | |
| 2621 | { } | |
| 2622 | ||
| 2623 | constexpr bool | |
| 2624 | year_month_day::ok() const noexcept | |
| 2625 | { | |
| 2626 | if (!_M_y.ok() || !_M_m.ok()) | |
| 2627 | return false; | |
| 2628 | return chrono::day{1} <= _M_d && _M_d <= (_M_y / _M_m / last).day(); | |
| 2629 | } | |
| 2630 | ||
| 2631 | // YEAR_MONTH_WEEKDAY | |
| 2632 | ||
| 2633 | class year_month_weekday | |
| 2634 | { | |
| 2635 | private: | |
| 2636 | chrono::year _M_y; | |
| 2637 | chrono::month _M_m; | |
| 2638 | chrono::weekday_indexed _M_wdi; | |
| 2639 | ||
| 2640 | static constexpr year_month_weekday | |
| 2641 | _S_from_sys_days(const sys_days& __dp) | |
| 2642 | { | |
| 2643 | year_month_day __ymd{__dp}; | |
| 2644 | chrono::weekday __wd{__dp}; | |
| 2645 | auto __index = __wd[(unsigned{__ymd.day()} - 1) / 7 + 1]; | |
| 2646 | return {__ymd.year(), __ymd.month(), __index}; | |
| 2647 | } | |
| 2648 | ||
| 2649 | public: | |
| 2650 | year_month_weekday() = default; | |
| 2651 | ||
| 2652 | constexpr | |
| 2653 | year_month_weekday(const chrono::year& __y, const chrono::month& __m, | |
| 2654 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2655 | : _M_y{__y}, _M_m{__m}, _M_wdi{__wdi} | |
| 2656 | { } | |
| 2657 | ||
| 2658 | constexpr | |
| 2659 | year_month_weekday(const sys_days& __dp) noexcept | |
| 2660 | : year_month_weekday{_S_from_sys_days(__dp)} | |
| 2661 | { } | |
| 2662 | ||
| 2663 | explicit constexpr | |
| 2664 | year_month_weekday(const local_days& __dp) noexcept | |
| 2665 | : year_month_weekday{sys_days{__dp.time_since_epoch()}} | |
| 2666 | { } | |
| 2667 | ||
| 7b743c67 PP |
2668 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2669 | constexpr year_month_weekday& | |
| 2670 | operator+=(const months& __m) noexcept | |
| 2671 | { | |
| 2672 | *this = *this + __m; | |
| 2673 | return *this; | |
| 2674 | } | |
| 03d5044b | 2675 | |
| 7b743c67 PP |
2676 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2677 | constexpr year_month_weekday& | |
| 2678 | operator-=(const months& __m) noexcept | |
| 2679 | { | |
| 2680 | *this = *this - __m; | |
| 2681 | return *this; | |
| 2682 | } | |
| 03d5044b PP |
2683 | |
| 2684 | constexpr year_month_weekday& | |
| 2685 | operator+=(const years& __y) noexcept | |
| 2686 | { | |
| 2687 | *this = *this + __y; | |
| 2688 | return *this; | |
| 2689 | } | |
| 2690 | ||
| 2691 | constexpr year_month_weekday& | |
| 2692 | operator-=(const years& __y) noexcept | |
| 2693 | { | |
| 2694 | *this = *this - __y; | |
| 2695 | return *this; | |
| 2696 | } | |
| 2697 | ||
| 2698 | constexpr chrono::year | |
| 2699 | year() const noexcept | |
| 2700 | { return _M_y; } | |
| 2701 | ||
| 2702 | constexpr chrono::month | |
| 2703 | month() const noexcept | |
| 2704 | { return _M_m; } | |
| 2705 | ||
| 2706 | constexpr chrono::weekday | |
| 2707 | weekday() const noexcept | |
| 2708 | { return _M_wdi.weekday(); } | |
| 2709 | ||
| 2710 | constexpr unsigned | |
| 2711 | index() const noexcept | |
| 2712 | { return _M_wdi.index(); } | |
| 2713 | ||
| 2714 | constexpr chrono::weekday_indexed | |
| 2715 | weekday_indexed() const noexcept | |
| 2716 | { return _M_wdi; } | |
| 2717 | ||
| 2718 | constexpr | |
| 2719 | operator sys_days() const noexcept | |
| 2720 | { | |
| 2721 | auto __d = sys_days{year() / month() / 1}; | |
| 8572edc8 PP |
2722 | return __d + (weekday() - chrono::weekday(__d) |
| 2723 | + days{(static_cast<int>(index())-1)*7}); | |
| 03d5044b PP |
2724 | } |
| 2725 | ||
| 2726 | explicit constexpr | |
| 2727 | operator local_days() const noexcept | |
| 2728 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2729 | ||
| 2730 | constexpr bool | |
| 2731 | ok() const noexcept | |
| 2732 | { | |
| 2733 | if (!_M_y.ok() || !_M_m.ok() || !_M_wdi.ok()) | |
| 2734 | return false; | |
| 2735 | if (_M_wdi.index() <= 4) | |
| 2736 | return true; | |
| 2737 | days __d = (_M_wdi.weekday() | |
| 2738 | - chrono::weekday{sys_days{_M_y / _M_m / 1}} | |
| 2739 | + days((_M_wdi.index()-1)*7 + 1)); | |
| 1007170d | 2740 | __glibcxx_assert(__d.count() >= 1); |
| 03d5044b PP |
2741 | return __d.count() <= unsigned{(_M_y / _M_m / last).day()}; |
| 2742 | } | |
| 2743 | ||
| 2744 | friend constexpr bool | |
| 2745 | operator==(const year_month_weekday& __x, | |
| 2746 | const year_month_weekday& __y) noexcept | |
| 2747 | { | |
| 2748 | return __x.year() == __y.year() | |
| 2749 | && __x.month() == __y.month() | |
| 0c5df67f | 2750 | && __x.weekday_indexed() == __y.weekday_indexed(); |
| 03d5044b PP |
2751 | } |
| 2752 | ||
| 7b743c67 PP |
2753 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2754 | friend constexpr year_month_weekday | |
| 2755 | operator+(const year_month_weekday& __ymwd, const months& __dm) noexcept | |
| 2756 | { | |
| 2757 | return ((__ymwd.year() / __ymwd.month() + __dm) | |
| 2758 | / __ymwd.weekday_indexed()); | |
| 2759 | } | |
| 03d5044b | 2760 | |
| 7b743c67 PP |
2761 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2762 | friend constexpr year_month_weekday | |
| 2763 | operator+(const months& __dm, const year_month_weekday& __ymwd) noexcept | |
| 2764 | { return __ymwd + __dm; } | |
| 03d5044b PP |
2765 | |
| 2766 | friend constexpr year_month_weekday | |
| 2767 | operator+(const year_month_weekday& __ymwd, const years& __dy) noexcept | |
| 2768 | { return {__ymwd.year() + __dy, __ymwd.month(), __ymwd.weekday_indexed()}; } | |
| 2769 | ||
| 2770 | friend constexpr year_month_weekday | |
| 2771 | operator+(const years& __dy, const year_month_weekday& __ymwd) noexcept | |
| 2772 | { return __ymwd + __dy; } | |
| 2773 | ||
| 7b743c67 PP |
2774 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2775 | friend constexpr year_month_weekday | |
| 2776 | operator-(const year_month_weekday& __ymwd, const months& __dm) noexcept | |
| 2777 | { return __ymwd + -__dm; } | |
| 03d5044b PP |
2778 | |
| 2779 | friend constexpr year_month_weekday | |
| 2780 | operator-(const year_month_weekday& __ymwd, const years& __dy) noexcept | |
| 2781 | { return __ymwd + -__dy; } | |
| 2782 | ||
| 2783 | friend constexpr year_month_weekday | |
| 2784 | operator/(const year_month& __ym, | |
| 2785 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2786 | { return {__ym.year(), __ym.month(), __wdi}; } | |
| 2787 | ||
| 2788 | friend constexpr year_month_weekday | |
| 2789 | operator/(const chrono::year& __y, const month_weekday& __mwd) noexcept | |
| 2790 | { return {__y, __mwd.month(), __mwd.weekday_indexed()}; } | |
| 2791 | ||
| 2792 | friend constexpr year_month_weekday | |
| 2793 | operator/(int __y, const month_weekday& __mwd) noexcept | |
| 2794 | { return chrono::year(__y) / __mwd; } | |
| 2795 | ||
| 2796 | friend constexpr year_month_weekday | |
| 2797 | operator/(const month_weekday& __mwd, const chrono::year& __y) noexcept | |
| 2798 | { return __y / __mwd; } | |
| 2799 | ||
| 2800 | friend constexpr year_month_weekday | |
| 2801 | operator/(const month_weekday& __mwd, int __y) noexcept | |
| 2802 | { return chrono::year(__y) / __mwd; } | |
| 2803 | ||
| 2804 | // TODO: Implement operator<<. | |
| 2805 | }; | |
| 2806 | ||
| 2807 | // YEAR_MONTH_WEEKDAY_LAST | |
| 2808 | ||
| 2809 | class year_month_weekday_last | |
| 2810 | { | |
| 2811 | private: | |
| 2812 | chrono::year _M_y; | |
| 2813 | chrono::month _M_m; | |
| 2814 | chrono::weekday_last _M_wdl; | |
| 2815 | ||
| 2816 | public: | |
| 2817 | constexpr | |
| 2818 | year_month_weekday_last(const chrono::year& __y, const chrono::month& __m, | |
| 2819 | const chrono::weekday_last& __wdl) noexcept | |
| 2820 | : _M_y{__y}, _M_m{__m}, _M_wdl{__wdl} | |
| 2821 | { } | |
| 2822 | ||
| 7b743c67 PP |
2823 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2824 | constexpr year_month_weekday_last& | |
| 2825 | operator+=(const months& __m) noexcept | |
| 2826 | { | |
| 2827 | *this = *this + __m; | |
| 2828 | return *this; | |
| 2829 | } | |
| 03d5044b | 2830 | |
| 7b743c67 PP |
2831 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2832 | constexpr year_month_weekday_last& | |
| 2833 | operator-=(const months& __m) noexcept | |
| 2834 | { | |
| 2835 | *this = *this - __m; | |
| 2836 | return *this; | |
| 2837 | } | |
| 03d5044b PP |
2838 | |
| 2839 | constexpr year_month_weekday_last& | |
| 2840 | operator+=(const years& __y) noexcept | |
| 2841 | { | |
| 2842 | *this = *this + __y; | |
| 2843 | return *this; | |
| 2844 | } | |
| 2845 | ||
| 2846 | constexpr year_month_weekday_last& | |
| 2847 | operator-=(const years& __y) noexcept | |
| 2848 | { | |
| 2849 | *this = *this - __y; | |
| 2850 | return *this; | |
| 2851 | } | |
| 2852 | ||
| 2853 | constexpr chrono::year | |
| 2854 | year() const noexcept | |
| 2855 | { return _M_y; } | |
| 2856 | ||
| 2857 | constexpr chrono::month | |
| 2858 | month() const noexcept | |
| 2859 | { return _M_m; } | |
| 2860 | ||
| 2861 | constexpr chrono::weekday | |
| 2862 | weekday() const noexcept | |
| 2863 | { return _M_wdl.weekday(); } | |
| 2864 | ||
| 2865 | constexpr chrono::weekday_last | |
| 2866 | weekday_last() const noexcept | |
| 2867 | { return _M_wdl; } | |
| 2868 | ||
| 2869 | constexpr | |
| 2870 | operator sys_days() const noexcept | |
| 2871 | { | |
| 2872 | const auto __d = sys_days{_M_y / _M_m / last}; | |
| 2873 | return sys_days{(__d - (chrono::weekday{__d} | |
| 2874 | - _M_wdl.weekday())).time_since_epoch()}; | |
| 2875 | } | |
| 2876 | ||
| 2877 | explicit constexpr | |
| 2878 | operator local_days() const noexcept | |
| 2879 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2880 | ||
| 2881 | constexpr bool | |
| 2882 | ok() const noexcept | |
| 2883 | { return _M_y.ok() && _M_m.ok() && _M_wdl.ok(); } | |
| 2884 | ||
| 2885 | friend constexpr bool | |
| 2886 | operator==(const year_month_weekday_last& __x, | |
| 2887 | const year_month_weekday_last& __y) noexcept | |
| 2888 | { | |
| 2889 | return __x.year() == __y.year() | |
| 2890 | && __x.month() == __y.month() | |
| 2891 | && __x.weekday_last() == __y.weekday_last(); | |
| 2892 | } | |
| 2893 | ||
| 7b743c67 PP |
2894 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2895 | friend constexpr year_month_weekday_last | |
| 2896 | operator+(const year_month_weekday_last& __ymwdl, | |
| 2897 | const months& __dm) noexcept | |
| 2898 | { | |
| 2899 | return ((__ymwdl.year() / __ymwdl.month() + __dm) | |
| 2900 | / __ymwdl.weekday_last()); | |
| 2901 | } | |
| 03d5044b | 2902 | |
| 7b743c67 PP |
2903 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2904 | friend constexpr year_month_weekday_last | |
| 2905 | operator+(const months& __dm, | |
| 2906 | const year_month_weekday_last& __ymwdl) noexcept | |
| 2907 | { return __ymwdl + __dm; } | |
| 03d5044b PP |
2908 | |
| 2909 | friend constexpr year_month_weekday_last | |
| 2910 | operator+(const year_month_weekday_last& __ymwdl, | |
| 2911 | const years& __dy) noexcept | |
| 2912 | { return {__ymwdl.year() + __dy, __ymwdl.month(), __ymwdl.weekday_last()}; } | |
| 2913 | ||
| 2914 | friend constexpr year_month_weekday_last | |
| 2915 | operator+(const years& __dy, | |
| 2916 | const year_month_weekday_last& __ymwdl) noexcept | |
| 2917 | { return __ymwdl + __dy; } | |
| 2918 | ||
| 7b743c67 PP |
2919 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2920 | friend constexpr year_month_weekday_last | |
| 2921 | operator-(const year_month_weekday_last& __ymwdl, | |
| 2922 | const months& __dm) noexcept | |
| 2923 | { return __ymwdl + -__dm; } | |
| 03d5044b PP |
2924 | |
| 2925 | friend constexpr year_month_weekday_last | |
| 2926 | operator-(const year_month_weekday_last& __ymwdl, | |
| 2927 | const years& __dy) noexcept | |
| 2928 | { return __ymwdl + -__dy; } | |
| 2929 | ||
| 2930 | friend constexpr year_month_weekday_last | |
| 2931 | operator/(const year_month& __ym, | |
| 2932 | const chrono::weekday_last& __wdl) noexcept | |
| 2933 | { return {__ym.year(), __ym.month(), __wdl}; } | |
| 2934 | ||
| 2935 | friend constexpr year_month_weekday_last | |
| 2936 | operator/(const chrono::year& __y, | |
| 2937 | const chrono::month_weekday_last& __mwdl) noexcept | |
| 2938 | { return {__y, __mwdl.month(), __mwdl.weekday_last()}; } | |
| 2939 | ||
| 2940 | friend constexpr year_month_weekday_last | |
| 2941 | operator/(int __y, const chrono::month_weekday_last& __mwdl) noexcept | |
| 2942 | { return chrono::year(__y) / __mwdl; } | |
| 2943 | ||
| 2944 | friend constexpr year_month_weekday_last | |
| 2945 | operator/(const chrono::month_weekday_last& __mwdl, | |
| 2946 | const chrono::year& __y) noexcept | |
| 2947 | { return __y / __mwdl; } | |
| 2948 | ||
| 2949 | friend constexpr year_month_weekday_last | |
| 2950 | operator/(const chrono::month_weekday_last& __mwdl, int __y) noexcept | |
| 2951 | { return chrono::year(__y) / __mwdl; } | |
| 2952 | ||
| 2953 | // TODO: Implement operator<<. | |
| 2954 | }; | |
| 2955 | ||
| 2956 | // HH_MM_SS | |
| 2957 | ||
| 2958 | namespace __detail | |
| 2959 | { | |
| 2960 | consteval long long | |
| 2961 | __pow10(unsigned __n) | |
| 2962 | { | |
| 2963 | long long __r = 1; | |
| 2964 | while (__n-- > 0) | |
| 2965 | __r *= 10; | |
| 2966 | return __r; | |
| 2967 | } | |
| 2968 | } | |
| 2969 | ||
| 2970 | template<typename _Duration> | |
| 2971 | class hh_mm_ss | |
| 2972 | { | |
| 2973 | private: | |
| 2974 | static constexpr int | |
| 2975 | _S_fractional_width() | |
| 2976 | { | |
| 2977 | int __multiplicity_2 = 0; | |
| 2978 | int __multiplicity_5 = 0; | |
| 2979 | auto __den = _Duration::period::den; | |
| 2980 | while ((__den % 2) == 0) | |
| 2981 | { | |
| 2982 | ++__multiplicity_2; | |
| 2983 | __den /= 2; | |
| 2984 | } | |
| 2985 | while ((__den % 5) == 0) | |
| 2986 | { | |
| 2987 | ++__multiplicity_5; | |
| 2988 | __den /= 5; | |
| 2989 | } | |
| 2990 | if (__den != 1) | |
| 2991 | return 6; | |
| 2992 | ||
| 2993 | int __width = (__multiplicity_2 > __multiplicity_5 | |
| 2994 | ? __multiplicity_2 : __multiplicity_5); | |
| 2995 | if (__width > 18) | |
| 2996 | __width = 18; | |
| 2997 | return __width; | |
| 2998 | } | |
| 2999 | ||
| 3000 | public: | |
| 3001 | static constexpr unsigned fractional_width = {_S_fractional_width()}; | |
| 3002 | ||
| 3003 | using precision | |
| 3004 | = duration<common_type_t<typename _Duration::rep, | |
| 3005 | chrono::seconds::rep>, | |
| 3006 | ratio<1, __detail::__pow10(fractional_width)>>; | |
| 3007 | ||
| 3008 | constexpr | |
| 3009 | hh_mm_ss() noexcept | |
| 3010 | : hh_mm_ss{_Duration::zero()} | |
| 3011 | { } | |
| 3012 | ||
| 3013 | constexpr explicit | |
| 3014 | hh_mm_ss(_Duration __d) noexcept | |
| 3015 | : _M_is_neg (__d < _Duration::zero()), | |
| 3016 | _M_h (duration_cast<chrono::hours>(abs(__d))), | |
| 3017 | _M_m (duration_cast<chrono::minutes>(abs(__d) - hours())), | |
| 3018 | _M_s (duration_cast<chrono::seconds>(abs(__d) - hours() - minutes())) | |
| 3019 | { | |
| 3020 | if constexpr (treat_as_floating_point_v<typename precision::rep>) | |
| 3021 | _M_ss = abs(__d) - hours() - minutes() - seconds(); | |
| 3022 | else | |
| 3023 | _M_ss = duration_cast<precision>(abs(__d) - hours() | |
| 3024 | - minutes() - seconds()); | |
| 3025 | } | |
| 3026 | ||
| 3027 | constexpr bool | |
| 3028 | is_negative() const noexcept | |
| 3029 | { return _M_is_neg; } | |
| 3030 | ||
| 3031 | constexpr chrono::hours | |
| 3032 | hours() const noexcept | |
| 3033 | { return _M_h; } | |
| 3034 | ||
| 3035 | constexpr chrono::minutes | |
| 3036 | minutes() const noexcept | |
| 3037 | { return _M_m; } | |
| 3038 | ||
| 3039 | constexpr chrono::seconds | |
| 3040 | seconds() const noexcept | |
| 3041 | { return _M_s; } | |
| 3042 | ||
| 3043 | constexpr precision | |
| 3044 | subseconds() const noexcept | |
| 3045 | { return _M_ss; } | |
| 3046 | ||
| 3047 | constexpr explicit | |
| 3048 | operator precision() const noexcept | |
| 3049 | { return to_duration(); } | |
| 3050 | ||
| 3051 | constexpr precision | |
| 3052 | to_duration() const noexcept | |
| 3053 | { | |
| 3054 | if (_M_is_neg) | |
| 3055 | return -(_M_h + _M_m + _M_s + _M_ss); | |
| 3056 | else | |
| 3057 | return _M_h + _M_m + _M_s + _M_ss; | |
| 3058 | } | |
| 3059 | ||
| 3060 | // TODO: Implement operator<<. | |
| 3061 | ||
| 3062 | private: | |
| 3063 | bool _M_is_neg; | |
| 3064 | chrono::hours _M_h; | |
| 3065 | chrono::minutes _M_m; | |
| 3066 | chrono::seconds _M_s; | |
| 3067 | precision _M_ss; | |
| 3068 | }; | |
| 3069 | #endif // C++20 | |
| 3070 | ||
| 3071 | // @} | |
| 3072 | } // namespace chrono | |
| 3073 | ||
| 3074 | #if __cplusplus > 201103L | |
| 3075 | ||
| 3076 | #define __cpp_lib_chrono_udls 201304 | |
| 3077 | ||
| 3078 | inline namespace literals | |
| 3079 | { | |
| 3080 | /** ISO C++ 2014 namespace for suffixes for duration literals. | |
| 3081 | * | |
| 3082 | * These suffixes can be used to create `chrono::duration` values with | |
| 3083 | * tick periods of hours, minutes, seconds, milliseconds, microseconds | |
| 3084 | * or nanoseconds. For example, `std::chrono::seconds(5)` can be written | |
| 3085 | * as `5s` after making the suffix visible in the current scope. | |
| 3086 | * The suffixes can be made visible by a using-directive or | |
| 3087 | * using-declaration such as: | |
| 3088 | * - `using namespace std::chrono_literals;` | |
| 3089 | * - `using namespace std::literals;` | |
| 3090 | * - `using namespace std::chrono;` | |
| 3091 | * - `using namespace std;` | |
| 3092 | * - `using std::chrono_literals::operator""s;` | |
| 3093 | * | |
| 3094 | * The result of these suffixes on an integer literal is one of the | |
| 3095 | * standard typedefs such as `std::chrono::hours`. | |
| 3096 | * The result on a floating-point literal is a duration type with the | |
| 3097 | * specified tick period and an unspecified floating-point representation, | |
| 3098 | * for example `1.5e2ms` might be equivalent to | |
| 3099 | * `chrono::duration<long double, chrono::milli>(1.5e2)`. | |
| 3100 | * | |
| 3101 | * @ingroup chrono | |
| 3102 | */ | |
| 3103 | inline namespace chrono_literals | |
| 3104 | { | |
| 3105 | #pragma GCC diagnostic push | |
| 3106 | #pragma GCC diagnostic ignored "-Wliteral-suffix" | |
| 3107 | /// @cond undocumented | |
| 3108 | template<typename _Dur, char... _Digits> | |
| 3109 | constexpr _Dur __check_overflow() | |
| 3110 | { | |
| 3111 | using _Val = __parse_int::_Parse_int<_Digits...>; | |
| 3112 | constexpr typename _Dur::rep __repval = _Val::value; | |
| 3113 | static_assert(__repval >= 0 && __repval == _Val::value, | |
| 3114 | "literal value cannot be represented by duration type"); | |
| 3115 | return _Dur(__repval); | |
| 3116 | } | |
| 3117 | /// @endcond | |
| 3118 | ||
| 3119 | /// Literal suffix for durations representing non-integer hours | |
| 3120 | constexpr chrono::duration<long double, ratio<3600,1>> | |
| 3121 | operator""h(long double __hours) | |
| 3122 | { return chrono::duration<long double, ratio<3600,1>>{__hours}; } | |
| 3123 | ||
| 3124 | /// Literal suffix for durations of type `std::chrono::hours` | |
| 3125 | template <char... _Digits> | |
| 3126 | constexpr chrono::hours | |
| 3127 | operator""h() | |
| 3128 | { return __check_overflow<chrono::hours, _Digits...>(); } | |
| 3129 | ||
| 3130 | /// Literal suffix for durations representing non-integer minutes | |
| 3131 | constexpr chrono::duration<long double, ratio<60,1>> | |
| 3132 | operator""min(long double __mins) | |
| 3133 | { return chrono::duration<long double, ratio<60,1>>{__mins}; } | |
| 3134 | ||
| 3135 | /// Literal suffix for durations of type `std::chrono::minutes` | |
| 3136 | template <char... _Digits> | |
| 3137 | constexpr chrono::minutes | |
| 3138 | operator""min() | |
| 3139 | { return __check_overflow<chrono::minutes, _Digits...>(); } | |
| 3140 | ||
| 3141 | /// Literal suffix for durations representing non-integer seconds | |
| 3142 | constexpr chrono::duration<long double> | |
| 3143 | operator""s(long double __secs) | |
| 3144 | { return chrono::duration<long double>{__secs}; } | |
| 3145 | ||
| 3146 | /// Literal suffix for durations of type `std::chrono::seconds` | |
| 3147 | template <char... _Digits> | |
| 3148 | constexpr chrono::seconds | |
| 3149 | operator""s() | |
| 3150 | { return __check_overflow<chrono::seconds, _Digits...>(); } | |
| 3151 | ||
| 3152 | /// Literal suffix for durations representing non-integer milliseconds | |
| 3153 | constexpr chrono::duration<long double, milli> | |
| 3154 | operator""ms(long double __msecs) | |
| 3155 | { return chrono::duration<long double, milli>{__msecs}; } | |
| 3156 | ||
| 3157 | /// Literal suffix for durations of type `std::chrono::milliseconds` | |
| 3158 | template <char... _Digits> | |
| 3159 | constexpr chrono::milliseconds | |
| 3160 | operator""ms() | |
| 3161 | { return __check_overflow<chrono::milliseconds, _Digits...>(); } | |
| 3162 | ||
| 3163 | /// Literal suffix for durations representing non-integer microseconds | |
| 3164 | constexpr chrono::duration<long double, micro> | |
| 3165 | operator""us(long double __usecs) | |
| 3166 | { return chrono::duration<long double, micro>{__usecs}; } | |
| 3167 | ||
| 3168 | /// Literal suffix for durations of type `std::chrono::microseconds` | |
| 3169 | template <char... _Digits> | |
| 3170 | constexpr chrono::microseconds | |
| 3171 | operator""us() | |
| 3172 | { return __check_overflow<chrono::microseconds, _Digits...>(); } | |
| 3173 | ||
| 3174 | /// Literal suffix for durations representing non-integer nanoseconds | |
| 3175 | constexpr chrono::duration<long double, nano> | |
| 3176 | operator""ns(long double __nsecs) | |
| 3177 | { return chrono::duration<long double, nano>{__nsecs}; } | |
| 3178 | ||
| 3179 | /// Literal suffix for durations of type `std::chrono::nanoseconds` | |
| 3180 | template <char... _Digits> | |
| 3181 | constexpr chrono::nanoseconds | |
| 3182 | operator""ns() | |
| 3183 | { return __check_overflow<chrono::nanoseconds, _Digits...>(); } | |
| 3184 | ||
| 3185 | #if __cplusplus > 201703L | |
| 3186 | constexpr chrono::day | |
| 3187 | operator""d(unsigned long long __d) noexcept | |
| 3188 | { return chrono::day{static_cast<unsigned>(__d)}; } | |
| 3189 | ||
| 3190 | constexpr chrono::year | |
| 3191 | operator""y(unsigned long long __y) noexcept | |
| 3192 | { return chrono::year{static_cast<int>(__y)}; } | |
| 3193 | #endif // C++20 | |
| 3194 | ||
| 3195 | #pragma GCC diagnostic pop | |
| 3196 | } // inline namespace chrono_literals | |
| 3197 | } // inline namespace literals | |
| 3198 | ||
| 3199 | namespace chrono | |
| 3200 | { | |
| 3201 | using namespace literals::chrono_literals; | |
| 3202 | } // namespace chrono | |
| 3203 | ||
| 3204 | #if __cplusplus > 201703L | |
| 3205 | namespace chrono | |
| 3206 | { | |
| 3207 | // 12/24 HOURS FUNCTIONS | |
| 3208 | ||
| 3209 | constexpr bool | |
| 3210 | is_am(const hours& __h) noexcept | |
| 3211 | { return 0h <= __h && __h <= 11h; } | |
| 3212 | ||
| 3213 | constexpr bool | |
| 3214 | is_pm(const hours& __h) noexcept | |
| 3215 | { return 12h <= __h && __h <= 23h; } | |
| 3216 | ||
| 3217 | constexpr hours | |
| 3218 | make12(const hours& __h) noexcept | |
| 3219 | { | |
| 3220 | if (__h == 0h) | |
| 3221 | return 12h; | |
| 3222 | else if (__h > 12h) | |
| 3223 | return __h - 12h; | |
| 3224 | return __h; | |
| 3225 | } | |
| 3226 | ||
| 3227 | constexpr hours | |
| 3228 | make24(const hours& __h, bool __is_pm) noexcept | |
| 3229 | { | |
| 3230 | if (!__is_pm) | |
| 3231 | { | |
| 3232 | if (__h == 12h) | |
| 3233 | return 0h; | |
| 3234 | else | |
| 3235 | return __h; | |
| 3236 | } | |
| 3237 | else | |
| 3238 | { | |
| 3239 | if (__h == 12h) | |
| 3240 | return __h; | |
| 3241 | else | |
| 3242 | return __h + 12h; | |
| 3243 | } | |
| 3244 | } | |
| 3245 | } | |
| 3246 | #endif | |
| 04f69fda | 3247 | |
| bf1fc37b JW |
3248 | #if __cplusplus >= 201703L |
| 3249 | namespace filesystem | |
| 3250 | { | |
| 3251 | struct __file_clock | |
| 3252 | { | |
| 3253 | using duration = chrono::nanoseconds; | |
| 3254 | using rep = duration::rep; | |
| 3255 | using period = duration::period; | |
| 3256 | using time_point = chrono::time_point<__file_clock>; | |
| 3257 | static constexpr bool is_steady = false; | |
| 3258 | ||
| 3259 | static time_point | |
| 3260 | now() noexcept | |
| 3261 | { return _S_from_sys(chrono::system_clock::now()); } | |
| 3262 | ||
| 3263 | #if __cplusplus > 201703L | |
| 3264 | template<typename _Dur> | |
| 3265 | static | |
| 3266 | chrono::file_time<_Dur> | |
| 3267 | from_sys(const chrono::sys_time<_Dur>& __t) noexcept | |
| 3268 | { return _S_from_sys(__t); } | |
| 3269 | ||
| 3270 | // For internal use only | |
| 3271 | template<typename _Dur> | |
| 3272 | static | |
| 3273 | chrono::sys_time<_Dur> | |
| 3274 | to_sys(const chrono::file_time<_Dur>& __t) noexcept | |
| 3275 | { return _S_to_sys(__t); } | |
| 3276 | #endif // C++20 | |
| 3277 | ||
| 3278 | private: | |
| 3279 | using __sys_clock = chrono::system_clock; | |
| 3280 | ||
| 3281 | // This clock's (unspecified) epoch is 2174-01-01 00:00:00 UTC. | |
| 3282 | // A signed 64-bit duration with nanosecond resolution gives roughly | |
| 3283 | // +/- 292 years, which covers the 1901-2446 date range for ext4. | |
| 3284 | static constexpr chrono::seconds _S_epoch_diff{6437664000}; | |
| 3285 | ||
| 3286 | protected: | |
| 3287 | // For internal use only | |
| 3288 | template<typename _Dur> | |
| 3289 | static | |
| 3290 | chrono::time_point<__file_clock, _Dur> | |
| 3291 | _S_from_sys(const chrono::time_point<__sys_clock, _Dur>& __t) noexcept | |
| 3292 | { | |
| 3293 | using __file_time = chrono::time_point<__file_clock, _Dur>; | |
| 3294 | return __file_time{__t.time_since_epoch()} - _S_epoch_diff; | |
| 3295 | } | |
| 3296 | ||
| 3297 | // For internal use only | |
| 3298 | template<typename _Dur> | |
| 3299 | static | |
| 3300 | chrono::time_point<__sys_clock, _Dur> | |
| 3301 | _S_to_sys(const chrono::time_point<__file_clock, _Dur>& __t) noexcept | |
| 3302 | { | |
| 3303 | using __sys_time = chrono::time_point<__sys_clock, _Dur>; | |
| 3304 | return __sys_time{__t.time_since_epoch()} + _S_epoch_diff; | |
| 3305 | } | |
| 3306 | }; | |
| 3307 | } // namespace filesystem | |
| 3308 | #endif // C++17 | |
| f03858e5 | 3309 | #endif // C++14 |
| 88c4d6b7 | 3310 | |
| 4a15d842 | 3311 | _GLIBCXX_END_NAMESPACE_VERSION |
| 1c9f675f ESR |
3312 | } // namespace std |
| 3313 | ||
| 88c4d6b7 | 3314 | #endif // C++11 |
| 1c9f675f | 3315 | |
| 15e38d0d | 3316 | #endif //_GLIBCXX_CHRONO |