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. | |
| f2ce64b5 JW |
62 | * |
| 63 | * @since C++11 | |
| 5b9daa7e BK |
64 | */ |
| 65 | ||
| 66 | /** @namespace std::chrono | |
| 19aaf814 | 67 | * @brief ISO C++ 2011 namespace for date and time utilities |
| f2ce64b5 | 68 | * @ingroup chrono |
| 5b9daa7e | 69 | */ |
| 15e38d0d CF |
70 | namespace chrono |
| 71 | { | |
| f2ce64b5 JW |
72 | /// @addtogroup chrono |
| 73 | /// @{ | |
| 74 | ||
| 75 | /// `chrono::duration` represents a distance between two points in time | |
| 15e38d0d CF |
76 | template<typename _Rep, typename _Period = ratio<1>> |
| 77 | struct duration; | |
| 78 | ||
| f2ce64b5 | 79 | /// `chrono::time_point` represents a point in time as measured by a clock |
| 16684e9c | 80 | template<typename _Clock, typename _Dur = typename _Clock::duration> |
| 15e38d0d | 81 | struct time_point; |
| f2ce64b5 | 82 | /// @} |
| 15e38d0d CF |
83 | } |
| 84 | ||
| f2ce64b5 JW |
85 | /// @addtogroup chrono |
| 86 | /// @{ | |
| 87 | ||
| b3618b71 | 88 | // 20.11.4.3 specialization of common_type (for duration, sfinae-friendly) |
| 33ac58d5 | 89 | |
| c34d3fd3 JW |
90 | /// @cond undocumented |
| 91 | ||
| f61a12b3 JW |
92 | template<typename _CT, typename _Period1, typename _Period2, typename = void> |
| 93 | struct __duration_common_type | |
| 94 | { }; | |
| 95 | ||
| b3618b71 | 96 | template<typename _CT, typename _Period1, typename _Period2> |
| f61a12b3 JW |
97 | struct __duration_common_type<_CT, _Period1, _Period2, |
| 98 | __void_t<typename _CT::type>> | |
| 15e38d0d | 99 | { |
| 16684e9c | 100 | private: |
| f61a12b3 JW |
101 | using __gcd_num = __static_gcd<_Period1::num, _Period2::num>; |
| 102 | using __gcd_den = __static_gcd<_Period1::den, _Period2::den>; | |
| 103 | using __cr = typename _CT::type; | |
| 104 | using __r = ratio<__gcd_num::value, | |
| 105 | (_Period1::den / __gcd_den::value) * _Period2::den>; | |
| 106 | ||
| 16684e9c | 107 | public: |
| 82030d51 | 108 | using type = chrono::duration<__cr, typename __r::type>; |
| 15e38d0d | 109 | }; |
| 94a86be0 | 110 | |
| c34d3fd3 JW |
111 | /// @endcond |
| 112 | ||
| f2ce64b5 JW |
113 | /// @{ |
| 114 | /// @relates chrono::duration | |
| 115 | ||
| c34d3fd3 | 116 | /// Specialization of common_type for chrono::duration types. |
| b3618b71 DK |
117 | template<typename _Rep1, typename _Period1, typename _Rep2, typename _Period2> |
| 118 | struct common_type<chrono::duration<_Rep1, _Period1>, | |
| f61a12b3 | 119 | chrono::duration<_Rep2, _Period2>> |
| 82030d51 JW |
120 | : __duration_common_type<common_type<_Rep1, _Rep2>, |
| 121 | typename _Period1::type, | |
| 122 | typename _Period2::type> | |
| b3618b71 DK |
123 | { }; |
| 124 | ||
| 82030d51 | 125 | /// Specialization of common_type for two identical chrono::duration types. |
| 82030d51 JW |
126 | template<typename _Rep, typename _Period> |
| 127 | struct common_type<chrono::duration<_Rep, _Period>, | |
| 128 | chrono::duration<_Rep, _Period>> | |
| f2f48b68 JW |
129 | { |
| 130 | using type = chrono::duration<typename common_type<_Rep>::type, | |
| 131 | typename _Period::type>; | |
| 132 | }; | |
| 82030d51 JW |
133 | |
| 134 | /// Specialization of common_type for one chrono::duration type. | |
| 82030d51 JW |
135 | template<typename _Rep, typename _Period> |
| 136 | struct common_type<chrono::duration<_Rep, _Period>> | |
| f2f48b68 JW |
137 | { |
| 138 | using type = chrono::duration<typename common_type<_Rep>::type, | |
| 139 | typename _Period::type>; | |
| 140 | }; | |
| f2ce64b5 | 141 | /// @} |
| 82030d51 | 142 | |
| b3618b71 | 143 | // 20.11.4.3 specialization of common_type (for time_point, sfinae-friendly) |
| 33ac58d5 | 144 | |
| c34d3fd3 JW |
145 | /// @cond undocumented |
| 146 | ||
| f61a12b3 JW |
147 | template<typename _CT, typename _Clock, typename = void> |
| 148 | struct __timepoint_common_type | |
| 149 | { }; | |
| 150 | ||
| b3618b71 | 151 | template<typename _CT, typename _Clock> |
| f61a12b3 | 152 | struct __timepoint_common_type<_CT, _Clock, __void_t<typename _CT::type>> |
| b3618b71 | 153 | { |
| f61a12b3 | 154 | using type = chrono::time_point<_Clock, typename _CT::type>; |
| 15e38d0d | 155 | }; |
| b3618b71 | 156 | |
| c34d3fd3 JW |
157 | /// @endcond |
| 158 | ||
| f2ce64b5 JW |
159 | /// @{ |
| 160 | /// @relates chrono::time_point | |
| 161 | ||
| c34d3fd3 | 162 | /// Specialization of common_type for chrono::time_point types. |
| b3618b71 DK |
163 | template<typename _Clock, typename _Duration1, typename _Duration2> |
| 164 | struct common_type<chrono::time_point<_Clock, _Duration1>, | |
| f61a12b3 JW |
165 | chrono::time_point<_Clock, _Duration2>> |
| 166 | : __timepoint_common_type<common_type<_Duration1, _Duration2>, _Clock> | |
| b3618b71 DK |
167 | { }; |
| 168 | ||
| 82030d51 | 169 | /// Specialization of common_type for two identical chrono::time_point types. |
| 82030d51 JW |
170 | template<typename _Clock, typename _Duration> |
| 171 | struct common_type<chrono::time_point<_Clock, _Duration>, | |
| 172 | chrono::time_point<_Clock, _Duration>> | |
| 173 | { using type = chrono::time_point<_Clock, _Duration>; }; | |
| 174 | ||
| 175 | /// Specialization of common_type for one chrono::time_point type. | |
| 82030d51 JW |
176 | template<typename _Clock, typename _Duration> |
| 177 | struct common_type<chrono::time_point<_Clock, _Duration>> | |
| 178 | { using type = chrono::time_point<_Clock, _Duration>; }; | |
| f2ce64b5 | 179 | /// @} |
| 82030d51 | 180 | |
| f0b88346 | 181 | /// @} group chrono |
| c34d3fd3 | 182 | |
| 94a86be0 | 183 | namespace chrono |
| 15e38d0d | 184 | { |
| c34d3fd3 JW |
185 | /// @addtogroup chrono |
| 186 | /// @{ | |
| 187 | ||
| 188 | /// @cond undocumented | |
| 189 | ||
| 5b9daa7e | 190 | // Primary template for duration_cast impl. |
| 16684e9c | 191 | template<typename _ToDur, typename _CF, typename _CR, |
| 94a86be0 | 192 | bool _NumIsOne = false, bool _DenIsOne = false> |
| 15e38d0d CF |
193 | struct __duration_cast_impl |
| 194 | { | |
| 94a86be0 | 195 | template<typename _Rep, typename _Period> |
| 16684e9c | 196 | static constexpr _ToDur |
| 94a86be0 BK |
197 | __cast(const duration<_Rep, _Period>& __d) |
| 198 | { | |
| 16684e9c BK |
199 | typedef typename _ToDur::rep __to_rep; |
| 200 | return _ToDur(static_cast<__to_rep>(static_cast<_CR>(__d.count()) | |
| 94a86be0 BK |
201 | * static_cast<_CR>(_CF::num) |
| 202 | / static_cast<_CR>(_CF::den))); | |
| 203 | } | |
| 15e38d0d CF |
204 | }; |
| 205 | ||
| 16684e9c BK |
206 | template<typename _ToDur, typename _CF, typename _CR> |
| 207 | struct __duration_cast_impl<_ToDur, _CF, _CR, true, true> | |
| 15e38d0d | 208 | { |
| 94a86be0 | 209 | template<typename _Rep, typename _Period> |
| 16684e9c | 210 | static constexpr _ToDur |
| 94a86be0 BK |
211 | __cast(const duration<_Rep, _Period>& __d) |
| 212 | { | |
| 16684e9c BK |
213 | typedef typename _ToDur::rep __to_rep; |
| 214 | return _ToDur(static_cast<__to_rep>(__d.count())); | |
| 94a86be0 | 215 | } |
| 15e38d0d CF |
216 | }; |
| 217 | ||
| 16684e9c BK |
218 | template<typename _ToDur, typename _CF, typename _CR> |
| 219 | struct __duration_cast_impl<_ToDur, _CF, _CR, true, false> | |
| 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::den))); |
| 228 | } | |
| 15e38d0d CF |
229 | }; |
| 230 | ||
| 16684e9c BK |
231 | template<typename _ToDur, typename _CF, typename _CR> |
| 232 | struct __duration_cast_impl<_ToDur, _CF, _CR, false, true> | |
| 15e38d0d | 233 | { |
| 94a86be0 | 234 | template<typename _Rep, typename _Period> |
| 16684e9c | 235 | static constexpr _ToDur |
| 94a86be0 BK |
236 | __cast(const duration<_Rep, _Period>& __d) |
| 237 | { | |
| 16684e9c BK |
238 | typedef typename _ToDur::rep __to_rep; |
| 239 | return _ToDur(static_cast<__to_rep>( | |
| 94a86be0 BK |
240 | static_cast<_CR>(__d.count()) * static_cast<_CR>(_CF::num))); |
| 241 | } | |
| 15e38d0d CF |
242 | }; |
| 243 | ||
| cc1e2504 PC |
244 | template<typename _Tp> |
| 245 | struct __is_duration | |
| 246 | : std::false_type | |
| 247 | { }; | |
| 248 | ||
| 249 | template<typename _Rep, typename _Period> | |
| 250 | struct __is_duration<duration<_Rep, _Period>> | |
| 251 | : std::true_type | |
| 252 | { }; | |
| 253 | ||
| d0dda804 JW |
254 | template<typename _Tp> |
| 255 | using __enable_if_is_duration | |
| 256 | = typename enable_if<__is_duration<_Tp>::value, _Tp>::type; | |
| 257 | ||
| 258 | template<typename _Tp> | |
| 259 | using __disable_if_is_duration | |
| 260 | = typename enable_if<!__is_duration<_Tp>::value, _Tp>::type; | |
| 261 | ||
| c34d3fd3 JW |
262 | /// @endcond |
| 263 | ||
| 5b9daa7e | 264 | /// duration_cast |
| 16684e9c | 265 | template<typename _ToDur, typename _Rep, typename _Period> |
| d0dda804 | 266 | constexpr __enable_if_is_duration<_ToDur> |
| 15e38d0d CF |
267 | duration_cast(const duration<_Rep, _Period>& __d) |
| 268 | { | |
| 16684e9c BK |
269 | typedef typename _ToDur::period __to_period; |
| 270 | typedef typename _ToDur::rep __to_rep; | |
| c128d203 | 271 | typedef ratio_divide<_Period, __to_period> __cf; |
| 16684e9c BK |
272 | typedef typename common_type<__to_rep, _Rep, intmax_t>::type |
| 273 | __cr; | |
| 274 | typedef __duration_cast_impl<_ToDur, __cf, __cr, | |
| 275 | __cf::num == 1, __cf::den == 1> __dc; | |
| 276 | return __dc::__cast(__d); | |
| 15e38d0d CF |
277 | } |
| 278 | ||
| 5b9daa7e | 279 | /// treat_as_floating_point |
| 15e38d0d | 280 | template<typename _Rep> |
| 513c5a5b | 281 | struct treat_as_floating_point |
| 15e38d0d CF |
282 | : is_floating_point<_Rep> |
| 283 | { }; | |
| 5f6acdfb | 284 | |
| 137422c8 VV |
285 | #if __cplusplus > 201402L |
| 286 | template <typename _Rep> | |
| 288695f7 | 287 | inline constexpr bool treat_as_floating_point_v = |
| 137422c8 VV |
288 | treat_as_floating_point<_Rep>::value; |
| 289 | #endif // C++17 | |
| 5f6acdfb | 290 | |
| bf1fc37b JW |
291 | #if __cplusplus > 201703L |
| 292 | template<typename _Tp> | |
| 293 | struct is_clock; | |
| 294 | ||
| 295 | template<typename _Tp> | |
| 296 | inline constexpr bool is_clock_v = is_clock<_Tp>::value; | |
| 297 | ||
| 298 | #if __cpp_lib_concepts | |
| 299 | template<typename _Tp> | |
| 300 | struct is_clock : false_type | |
| 301 | { }; | |
| 302 | ||
| 303 | template<typename _Tp> | |
| 304 | requires requires { | |
| 305 | typename _Tp::rep; | |
| 306 | typename _Tp::period; | |
| 307 | typename _Tp::duration; | |
| 308 | typename _Tp::time_point::clock; | |
| 309 | typename _Tp::time_point::duration; | |
| 310 | { &_Tp::is_steady } -> same_as<const bool*>; | |
| 311 | { _Tp::now() } -> same_as<typename _Tp::time_point>; | |
| 312 | requires same_as<typename _Tp::duration, | |
| 313 | duration<typename _Tp::rep, typename _Tp::period>>; | |
| 314 | requires same_as<typename _Tp::time_point::duration, | |
| 315 | typename _Tp::duration>; | |
| 316 | } | |
| 317 | struct is_clock<_Tp> : true_type | |
| 318 | { }; | |
| 319 | #else | |
| 320 | template<typename _Tp, typename = void> | |
| 321 | struct __is_clock_impl : false_type | |
| 322 | { }; | |
| 323 | ||
| 324 | template<typename _Tp> | |
| 325 | struct __is_clock_impl<_Tp, | |
| 326 | void_t<typename _Tp::rep, typename _Tp::period, | |
| 327 | typename _Tp::duration, | |
| 328 | typename _Tp::time_point::duration, | |
| 329 | decltype(_Tp::is_steady), | |
| 330 | decltype(_Tp::now())>> | |
| 331 | : __and_<is_same<typename _Tp::duration, | |
| 332 | duration<typename _Tp::rep, typename _Tp::period>>, | |
| 333 | is_same<typename _Tp::time_point::duration, | |
| 334 | typename _Tp::duration>, | |
| 335 | is_same<decltype(&_Tp::is_steady), const bool*>, | |
| 336 | is_same<decltype(_Tp::now()), typename _Tp::time_point>>::type | |
| 337 | { }; | |
| 338 | ||
| 339 | template<typename _Tp> | |
| 340 | struct is_clock : __is_clock_impl<_Tp>::type | |
| 341 | { }; | |
| 342 | #endif | |
| 343 | #endif // C++20 | |
| 344 | ||
| 233fa165 JW |
345 | #if __cplusplus >= 201703L |
| 346 | # define __cpp_lib_chrono 201611 | |
| 5f6acdfb JW |
347 | |
| 348 | template<typename _ToDur, typename _Rep, typename _Period> | |
| d0dda804 | 349 | constexpr __enable_if_is_duration<_ToDur> |
| 5f6acdfb JW |
350 | floor(const duration<_Rep, _Period>& __d) |
| 351 | { | |
| 352 | auto __to = chrono::duration_cast<_ToDur>(__d); | |
| 353 | if (__to > __d) | |
| 0c0d2a4c | 354 | return __to - _ToDur{1}; |
| 5f6acdfb JW |
355 | return __to; |
| 356 | } | |
| 357 | ||
| 358 | template<typename _ToDur, typename _Rep, typename _Period> | |
| d0dda804 | 359 | constexpr __enable_if_is_duration<_ToDur> |
| 5f6acdfb JW |
360 | ceil(const duration<_Rep, _Period>& __d) |
| 361 | { | |
| 53ad6b19 JW |
362 | auto __to = chrono::duration_cast<_ToDur>(__d); |
| 363 | if (__to < __d) | |
| 364 | return __to + _ToDur{1}; | |
| 365 | return __to; | |
| 5f6acdfb JW |
366 | } |
| 367 | ||
| 368 | template <typename _ToDur, typename _Rep, typename _Period> | |
| 369 | constexpr enable_if_t< | |
| 370 | __and_<__is_duration<_ToDur>, | |
| 371 | __not_<treat_as_floating_point<typename _ToDur::rep>>>::value, | |
| 372 | _ToDur> | |
| 373 | round(const duration<_Rep, _Period>& __d) | |
| 374 | { | |
| 375 | _ToDur __t0 = chrono::floor<_ToDur>(__d); | |
| 376 | _ToDur __t1 = __t0 + _ToDur{1}; | |
| 377 | auto __diff0 = __d - __t0; | |
| 378 | auto __diff1 = __t1 - __d; | |
| 379 | if (__diff0 == __diff1) | |
| 380 | { | |
| 381 | if (__t0.count() & 1) | |
| 382 | return __t1; | |
| 383 | return __t0; | |
| 384 | } | |
| 385 | else if (__diff0 < __diff1) | |
| 386 | return __t0; | |
| 387 | return __t1; | |
| 388 | } | |
| 389 | ||
| 390 | template<typename _Rep, typename _Period> | |
| 391 | constexpr | |
| 392 | enable_if_t<numeric_limits<_Rep>::is_signed, duration<_Rep, _Period>> | |
| 393 | abs(duration<_Rep, _Period> __d) | |
| 394 | { | |
| 395 | if (__d >= __d.zero()) | |
| 396 | return __d; | |
| 397 | return -__d; | |
| 398 | } | |
| 53ad6b19 JW |
399 | |
| 400 | // Make chrono::ceil<D> also usable as chrono::__detail::ceil<D>. | |
| 401 | namespace __detail { using chrono::ceil; } | |
| 402 | ||
| 403 | #else // ! C++17 | |
| 404 | ||
| 405 | // We want to use ceil even when compiling for earlier standards versions. | |
| 406 | // C++11 only allows a single statement in a constexpr function, so we | |
| 407 | // need to move the comparison into a separate function, __ceil_impl. | |
| 408 | namespace __detail | |
| 409 | { | |
| 410 | template<typename _Tp, typename _Up> | |
| 411 | constexpr _Tp | |
| 412 | __ceil_impl(const _Tp& __t, const _Up& __u) | |
| 413 | { | |
| 414 | return (__t < __u) ? (__t + _Tp{1}) : __t; | |
| 415 | } | |
| 416 | ||
| 417 | // C++11-friendly version of std::chrono::ceil<D> for internal use. | |
| 418 | template<typename _ToDur, typename _Rep, typename _Period> | |
| 419 | constexpr _ToDur | |
| 420 | ceil(const duration<_Rep, _Period>& __d) | |
| 421 | { | |
| 422 | return __detail::__ceil_impl(chrono::duration_cast<_ToDur>(__d), __d); | |
| 423 | } | |
| 424 | } | |
| 5f6acdfb JW |
425 | #endif // C++17 |
| 426 | ||
| 5b9daa7e | 427 | /// duration_values |
| 15e38d0d CF |
428 | template<typename _Rep> |
| 429 | struct duration_values | |
| 430 | { | |
| 94a86be0 | 431 | static constexpr _Rep |
| 5e9aed14 | 432 | zero() noexcept |
| 94a86be0 BK |
433 | { return _Rep(0); } |
| 434 | ||
| 435 | static constexpr _Rep | |
| 5e9aed14 | 436 | max() noexcept |
| 94a86be0 BK |
437 | { return numeric_limits<_Rep>::max(); } |
| 438 | ||
| 439 | static constexpr _Rep | |
| 5e9aed14 | 440 | min() noexcept |
| 545dc5e3 | 441 | { return numeric_limits<_Rep>::lowest(); } |
| 15e38d0d CF |
442 | }; |
| 443 | ||
| c34d3fd3 JW |
444 | /// @cond undocumented |
| 445 | ||
| 7ad68967 | 446 | template<typename _Tp> |
| 9d4e8554 CF |
447 | struct __is_ratio |
| 448 | : std::false_type | |
| 449 | { }; | |
| 450 | ||
| 451 | template<intmax_t _Num, intmax_t _Den> | |
| 452 | struct __is_ratio<ratio<_Num, _Den>> | |
| 453 | : std::true_type | |
| 454 | { }; | |
| 455 | ||
| c34d3fd3 JW |
456 | /// @endcond |
| 457 | ||
| 15e38d0d CF |
458 | template<typename _Rep, typename _Period> |
| 459 | struct duration | |
| 460 | { | |
| d0dda804 JW |
461 | private: |
| 462 | template<typename _Rep2> | |
| 463 | using __is_float = treat_as_floating_point<_Rep2>; | |
| 464 | ||
| b1850c61 JW |
465 | static constexpr intmax_t |
| 466 | _S_gcd(intmax_t __m, intmax_t __n) noexcept | |
| 467 | { | |
| 468 | // Duration only allows positive periods so we don't need to | |
| 3c219134 JW |
469 | // handle negative values here (unlike __static_gcd and std::gcd). |
| 470 | #if __cplusplus >= 201402L | |
| ec5096f4 | 471 | do |
| 3c219134 JW |
472 | { |
| 473 | intmax_t __rem = __m % __n; | |
| 474 | __m = __n; | |
| 475 | __n = __rem; | |
| 476 | } | |
| ec5096f4 JW |
477 | while (__n != 0); |
| 478 | return __m; | |
| 3c219134 JW |
479 | #else |
| 480 | // C++11 doesn't allow loops in constexpr functions, but this | |
| 481 | // recursive version can be more expensive to evaluate. | |
| ec5096f4 | 482 | return (__n == 0) ? __m : _S_gcd(__n, __m % __n); |
| 3c219134 | 483 | #endif |
| b1850c61 JW |
484 | } |
| 485 | ||
| 486 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
| 487 | // 2094. overflow shouldn't participate in overload resolution | |
| 488 | // 3090. What is [2094] intended to mean? | |
| 489 | // This only produces a valid type if no overflow occurs. | |
| 490 | template<typename _R1, typename _R2, | |
| 491 | intmax_t __gcd1 = _S_gcd(_R1::num, _R2::num), | |
| 492 | intmax_t __gcd2 = _S_gcd(_R1::den, _R2::den)> | |
| 493 | using __divide = ratio<(_R1::num / __gcd1) * (_R2::den / __gcd2), | |
| 494 | (_R1::den / __gcd2) * (_R2::num / __gcd1)>; | |
| 495 | ||
| d0dda804 JW |
496 | // _Period2 is an exact multiple of _Period |
| 497 | template<typename _Period2> | |
| 498 | using __is_harmonic | |
| b1850c61 | 499 | = __bool_constant<__divide<_Period2, _Period>::den == 1>; |
| d0dda804 JW |
500 | |
| 501 | public: | |
| 502 | ||
| 82030d51 JW |
503 | using rep = _Rep; |
| 504 | using period = typename _Period::type; | |
| 94a86be0 | 505 | |
| 9d4e8554 | 506 | static_assert(!__is_duration<_Rep>::value, "rep cannot be a duration"); |
| 94a86be0 | 507 | static_assert(__is_ratio<_Period>::value, |
| 9d4e8554 | 508 | "period must be a specialization of ratio"); |
| 94a86be0 BK |
509 | static_assert(_Period::num > 0, "period must be positive"); |
| 510 | ||
| 9ab48d6e | 511 | // 20.11.5.1 construction / copy / destroy |
| d069a690 | 512 | constexpr duration() = default; |
| 94a86be0 | 513 | |
| a9ba8ba5 | 514 | duration(const duration&) = default; |
| 6f0a9757 | 515 | |
| 8499a82c JW |
516 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 517 | // 3050. Conversion specification problem in chrono::duration | |
| d0dda804 | 518 | template<typename _Rep2, typename = _Require< |
| 8499a82c | 519 | is_convertible<const _Rep2&, rep>, |
| d0dda804 | 520 | __or_<__is_float<rep>, __not_<__is_float<_Rep2>>>>> |
| 94a86be0 | 521 | constexpr explicit duration(const _Rep2& __rep) |
| 85db9dcc | 522 | : __r(static_cast<rep>(__rep)) { } |
| 15e38d0d | 523 | |
| d0dda804 | 524 | template<typename _Rep2, typename _Period2, typename = _Require< |
| b1850c61 | 525 | is_convertible<const _Rep2&, rep>, |
| d0dda804 JW |
526 | __or_<__is_float<rep>, |
| 527 | __and_<__is_harmonic<_Period2>, | |
| 528 | __not_<__is_float<_Rep2>>>>>> | |
| 94a86be0 BK |
529 | constexpr duration(const duration<_Rep2, _Period2>& __d) |
| 530 | : __r(duration_cast<duration>(__d).count()) { } | |
| 15e38d0d | 531 | |
| 9d4e8554 | 532 | ~duration() = default; |
| 9d4e8554 CF |
533 | duration& operator=(const duration&) = default; |
| 534 | ||
| 9ab48d6e | 535 | // 20.11.5.2 observer |
| 94a86be0 BK |
536 | constexpr rep |
| 537 | count() const | |
| 538 | { return __r; } | |
| 539 | ||
| 9ab48d6e | 540 | // 20.11.5.3 arithmetic |
| 82030d51 | 541 | |
| f2f48b68 | 542 | constexpr duration<typename common_type<rep>::type, period> |
| 94a86be0 | 543 | operator+() const |
| f2f48b68 | 544 | { return duration<typename common_type<rep>::type, period>(__r); } |
| 94a86be0 | 545 | |
| f2f48b68 | 546 | constexpr duration<typename common_type<rep>::type, period> |
| 94a86be0 | 547 | operator-() const |
| f2f48b68 | 548 | { return duration<typename common_type<rep>::type, period>(-__r); } |
| 94a86be0 | 549 | |
| 1dee318a | 550 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
551 | operator++() |
| 552 | { | |
| 553 | ++__r; | |
| 554 | return *this; | |
| 555 | } | |
| 556 | ||
| 1dee318a | 557 | _GLIBCXX17_CONSTEXPR duration |
| 94a86be0 BK |
558 | operator++(int) |
| 559 | { return duration(__r++); } | |
| 560 | ||
| 1dee318a | 561 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
562 | operator--() |
| 563 | { | |
| 564 | --__r; | |
| 565 | return *this; | |
| 566 | } | |
| 567 | ||
| 1dee318a | 568 | _GLIBCXX17_CONSTEXPR duration |
| 94a86be0 BK |
569 | operator--(int) |
| 570 | { return duration(__r--); } | |
| 571 | ||
| 1dee318a | 572 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
573 | operator+=(const duration& __d) |
| 574 | { | |
| 575 | __r += __d.count(); | |
| 576 | return *this; | |
| 577 | } | |
| 578 | ||
| 1dee318a | 579 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
580 | operator-=(const duration& __d) |
| 581 | { | |
| 582 | __r -= __d.count(); | |
| 583 | return *this; | |
| 584 | } | |
| 585 | ||
| 1dee318a | 586 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
587 | operator*=(const rep& __rhs) |
| 588 | { | |
| 589 | __r *= __rhs; | |
| 590 | return *this; | |
| 591 | } | |
| 592 | ||
| 1dee318a | 593 | _GLIBCXX17_CONSTEXPR duration& |
| 94a86be0 BK |
594 | operator/=(const rep& __rhs) |
| 595 | { | |
| 596 | __r /= __rhs; | |
| 597 | return *this; | |
| 598 | } | |
| 15e38d0d | 599 | |
| 513c5a5b PC |
600 | // DR 934. |
| 601 | template<typename _Rep2 = rep> | |
| 1dee318a | 602 | _GLIBCXX17_CONSTEXPR |
| 513c5a5b PC |
603 | typename enable_if<!treat_as_floating_point<_Rep2>::value, |
| 604 | duration&>::type | |
| 605 | operator%=(const rep& __rhs) | |
| 606 | { | |
| 607 | __r %= __rhs; | |
| 608 | return *this; | |
| 609 | } | |
| 610 | ||
| 611 | template<typename _Rep2 = rep> | |
| 1dee318a | 612 | _GLIBCXX17_CONSTEXPR |
| 513c5a5b PC |
613 | typename enable_if<!treat_as_floating_point<_Rep2>::value, |
| 614 | duration&>::type | |
| 615 | operator%=(const duration& __d) | |
| 616 | { | |
| 617 | __r %= __d.count(); | |
| 618 | return *this; | |
| 619 | } | |
| 620 | ||
| 9ab48d6e | 621 | // 20.11.5.4 special values |
| 94a86be0 | 622 | static constexpr duration |
| 5e9aed14 | 623 | zero() noexcept |
| 94a86be0 BK |
624 | { return duration(duration_values<rep>::zero()); } |
| 625 | ||
| 626 | static constexpr duration | |
| 5e9aed14 | 627 | min() noexcept |
| 94a86be0 | 628 | { return duration(duration_values<rep>::min()); } |
| 15e38d0d | 629 | |
| 94a86be0 | 630 | static constexpr duration |
| 5e9aed14 | 631 | max() noexcept |
| 94a86be0 | 632 | { return duration(duration_values<rep>::max()); } |
| 513c5a5b PC |
633 | |
| 634 | private: | |
| 94a86be0 | 635 | rep __r; |
| 15e38d0d CF |
636 | }; |
| 637 | ||
| f2ce64b5 JW |
638 | /// @{ |
| 639 | /// @relates std::chrono::duration | |
| c34d3fd3 JW |
640 | |
| 641 | /// The sum of two durations. | |
| 15e38d0d | 642 | template<typename _Rep1, typename _Period1, |
| 94a86be0 | 643 | typename _Rep2, typename _Period2> |
| a4eeb822 PC |
644 | constexpr typename common_type<duration<_Rep1, _Period1>, |
| 645 | duration<_Rep2, _Period2>>::type | |
| 94a86be0 BK |
646 | operator+(const duration<_Rep1, _Period1>& __lhs, |
| 647 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 648 | { |
| 16684e9c BK |
649 | typedef duration<_Rep1, _Period1> __dur1; |
| 650 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
651 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 652 | return __cd(__cd(__lhs).count() + __cd(__rhs).count()); | |
| 15e38d0d CF |
653 | } |
| 654 | ||
| c34d3fd3 | 655 | /// The difference between two durations. |
| 94a86be0 BK |
656 | template<typename _Rep1, typename _Period1, |
| 657 | typename _Rep2, typename _Period2> | |
| a4eeb822 PC |
658 | constexpr typename common_type<duration<_Rep1, _Period1>, |
| 659 | duration<_Rep2, _Period2>>::type | |
| 94a86be0 BK |
660 | operator-(const duration<_Rep1, _Period1>& __lhs, |
| 661 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 662 | { |
| 16684e9c BK |
663 | typedef duration<_Rep1, _Period1> __dur1; |
| 664 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
665 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 666 | return __cd(__cd(__lhs).count() - __cd(__rhs).count()); | |
| 15e38d0d CF |
667 | } |
| 668 | ||
| c34d3fd3 JW |
669 | /// @} |
| 670 | ||
| 671 | /// @cond undocumented | |
| 672 | ||
| d0dda804 JW |
673 | // SFINAE helper to obtain common_type<_Rep1, _Rep2> only if _Rep2 |
| 674 | // is implicitly convertible to it. | |
| 8499a82c JW |
675 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 676 | // 3050. Conversion specification problem in chrono::duration constructor | |
| d0dda804 JW |
677 | template<typename _Rep1, typename _Rep2, |
| 678 | typename _CRep = typename common_type<_Rep1, _Rep2>::type> | |
| 8499a82c JW |
679 | using __common_rep_t = typename |
| 680 | enable_if<is_convertible<const _Rep2&, _CRep>::value, _CRep>::type; | |
| cc1e2504 | 681 | |
| c34d3fd3 JW |
682 | /// @endcond |
| 683 | ||
| f2ce64b5 JW |
684 | /** @{ |
| 685 | * Arithmetic operators for chrono::duration | |
| 686 | * @relates std::chrono::duration | |
| 687 | */ | |
| c34d3fd3 | 688 | |
| 15e38d0d | 689 | template<typename _Rep1, typename _Period, typename _Rep2> |
| d0dda804 | 690 | constexpr duration<__common_rep_t<_Rep1, _Rep2>, _Period> |
| 15e38d0d CF |
691 | operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| 692 | { | |
| b850be9d PC |
693 | typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| 694 | __cd; | |
| 695 | return __cd(__cd(__d).count() * __s); | |
| 15e38d0d CF |
696 | } |
| 697 | ||
| dbb45bf9 | 698 | template<typename _Rep1, typename _Rep2, typename _Period> |
| d0dda804 | 699 | constexpr duration<__common_rep_t<_Rep2, _Rep1>, _Period> |
| cc1e2504 | 700 | operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) |
| 15e38d0d | 701 | { return __d * __s; } |
| 94a86be0 | 702 | |
| 15e38d0d | 703 | template<typename _Rep1, typename _Period, typename _Rep2> |
| d0dda804 JW |
704 | constexpr |
| 705 | duration<__common_rep_t<_Rep1, __disable_if_is_duration<_Rep2>>, _Period> | |
| 513c5a5b | 706 | operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| 15e38d0d | 707 | { |
| b850be9d PC |
708 | typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| 709 | __cd; | |
| 710 | return __cd(__cd(__d).count() / __s); | |
| 513c5a5b | 711 | } |
| 15e38d0d | 712 | |
| a4eeb822 PC |
713 | template<typename _Rep1, typename _Period1, |
| 714 | typename _Rep2, typename _Period2> | |
| 715 | constexpr typename common_type<_Rep1, _Rep2>::type | |
| 94a86be0 BK |
716 | operator/(const duration<_Rep1, _Period1>& __lhs, |
| 717 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 718 | { |
| 16684e9c BK |
719 | typedef duration<_Rep1, _Period1> __dur1; |
| 720 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
721 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 722 | return __cd(__lhs).count() / __cd(__rhs).count(); | |
| 513c5a5b | 723 | } |
| 15e38d0d | 724 | |
| 513c5a5b PC |
725 | // DR 934. |
| 726 | template<typename _Rep1, typename _Period, typename _Rep2> | |
| d0dda804 JW |
727 | constexpr |
| 728 | duration<__common_rep_t<_Rep1, __disable_if_is_duration<_Rep2>>, _Period> | |
| 513c5a5b | 729 | operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| 15e38d0d | 730 | { |
| b850be9d PC |
731 | typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| 732 | __cd; | |
| 733 | return __cd(__cd(__d).count() % __s); | |
| 15e38d0d | 734 | } |
| 513c5a5b | 735 | |
| a4eeb822 PC |
736 | template<typename _Rep1, typename _Period1, |
| 737 | typename _Rep2, typename _Period2> | |
| 738 | constexpr typename common_type<duration<_Rep1, _Period1>, | |
| 739 | duration<_Rep2, _Period2>>::type | |
| 94a86be0 BK |
740 | operator%(const duration<_Rep1, _Period1>& __lhs, |
| 741 | const duration<_Rep2, _Period2>& __rhs) | |
| 513c5a5b | 742 | { |
| 16684e9c BK |
743 | typedef duration<_Rep1, _Period1> __dur1; |
| 744 | typedef duration<_Rep2, _Period2> __dur2; | |
| b850be9d PC |
745 | typedef typename common_type<__dur1,__dur2>::type __cd; |
| 746 | return __cd(__cd(__lhs).count() % __cd(__rhs).count()); | |
| 513c5a5b | 747 | } |
| f2ce64b5 | 748 | /// @} |
| 513c5a5b | 749 | |
| 15e38d0d | 750 | // comparisons |
| c34d3fd3 | 751 | |
| f2ce64b5 JW |
752 | /** @{ |
| 753 | * Comparisons for chrono::duration | |
| 754 | * @relates std::chrono::duration | |
| 755 | */ | |
| 756 | ||
| 15e38d0d | 757 | template<typename _Rep1, typename _Period1, |
| 94a86be0 | 758 | typename _Rep2, typename _Period2> |
| a4eeb822 | 759 | constexpr bool |
| 94a86be0 BK |
760 | operator==(const duration<_Rep1, _Period1>& __lhs, |
| 761 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 762 | { |
| 16684e9c BK |
763 | typedef duration<_Rep1, _Period1> __dur1; |
| 764 | typedef duration<_Rep2, _Period2> __dur2; | |
| 765 | typedef typename common_type<__dur1,__dur2>::type __ct; | |
| 94a86be0 | 766 | return __ct(__lhs).count() == __ct(__rhs).count(); |
| 15e38d0d CF |
767 | } |
| 768 | ||
| 769 | template<typename _Rep1, typename _Period1, | |
| 94a86be0 | 770 | typename _Rep2, typename _Period2> |
| a4eeb822 | 771 | constexpr bool |
| 94a86be0 BK |
772 | operator<(const duration<_Rep1, _Period1>& __lhs, |
| 773 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 774 | { |
| 16684e9c BK |
775 | typedef duration<_Rep1, _Period1> __dur1; |
| 776 | typedef duration<_Rep2, _Period2> __dur2; | |
| 777 | typedef typename common_type<__dur1,__dur2>::type __ct; | |
| 94a86be0 | 778 | return __ct(__lhs).count() < __ct(__rhs).count(); |
| 15e38d0d CF |
779 | } |
| 780 | ||
| 27c17177 JW |
781 | #if __cpp_lib_three_way_comparison |
| 782 | template<typename _Rep1, typename _Period1, | |
| 783 | typename _Rep2, typename _Period2> | |
| 784 | requires three_way_comparable<common_type_t<_Rep1, _Rep2>> | |
| 785 | constexpr auto | |
| 786 | operator<=>(const duration<_Rep1, _Period1>& __lhs, | |
| 787 | const duration<_Rep2, _Period2>& __rhs) | |
| 788 | { | |
| 789 | using __ct = common_type_t<duration<_Rep1, _Period1>, | |
| 790 | duration<_Rep2, _Period2>>; | |
| 791 | return __ct(__lhs).count() <=> __ct(__rhs).count(); | |
| 792 | } | |
| 793 | #else | |
| 15e38d0d | 794 | template<typename _Rep1, typename _Period1, |
| 94a86be0 | 795 | typename _Rep2, typename _Period2> |
| a4eeb822 | 796 | constexpr bool |
| 94a86be0 BK |
797 | operator!=(const duration<_Rep1, _Period1>& __lhs, |
| 798 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d | 799 | { return !(__lhs == __rhs); } |
| 27c17177 | 800 | #endif |
| 15e38d0d CF |
801 | |
| 802 | template<typename _Rep1, typename _Period1, | |
| 94a86be0 | 803 | typename _Rep2, typename _Period2> |
| a4eeb822 | 804 | constexpr bool |
| 94a86be0 BK |
805 | operator<=(const duration<_Rep1, _Period1>& __lhs, |
| 806 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d CF |
807 | { return !(__rhs < __lhs); } |
| 808 | ||
| 809 | template<typename _Rep1, typename _Period1, | |
| 94a86be0 | 810 | typename _Rep2, typename _Period2> |
| a4eeb822 | 811 | constexpr bool |
| 94a86be0 BK |
812 | operator>(const duration<_Rep1, _Period1>& __lhs, |
| 813 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d CF |
814 | { return __rhs < __lhs; } |
| 815 | ||
| 94a86be0 BK |
816 | template<typename _Rep1, typename _Period1, |
| 817 | typename _Rep2, typename _Period2> | |
| a4eeb822 | 818 | constexpr bool |
| 94a86be0 BK |
819 | operator>=(const duration<_Rep1, _Period1>& __lhs, |
| 820 | const duration<_Rep2, _Period2>& __rhs) | |
| 15e38d0d CF |
821 | { return !(__lhs < __rhs); } |
| 822 | ||
| c34d3fd3 JW |
823 | /// @} |
| 824 | ||
| f2ce64b5 | 825 | /// @cond undocumented |
| 8ba7f29e JW |
826 | #ifdef _GLIBCXX_USE_C99_STDINT_TR1 |
| 827 | # define _GLIBCXX_CHRONO_INT64_T int64_t | |
| 828 | #elif defined __INT64_TYPE__ | |
| 829 | # define _GLIBCXX_CHRONO_INT64_T __INT64_TYPE__ | |
| 830 | #else | |
| 831 | static_assert(std::numeric_limits<unsigned long long>::digits >= 64, | |
| 832 | "Representation type for nanoseconds must have at least 64 bits"); | |
| 833 | # define _GLIBCXX_CHRONO_INT64_T long long | |
| 834 | #endif | |
| f2ce64b5 | 835 | /// @endcond |
| 8ba7f29e | 836 | |
| 5b9daa7e | 837 | /// nanoseconds |
| 16948c54 | 838 | using nanoseconds = duration<_GLIBCXX_CHRONO_INT64_T, nano>; |
| 5b9daa7e BK |
839 | |
| 840 | /// microseconds | |
| 16948c54 | 841 | using microseconds = duration<_GLIBCXX_CHRONO_INT64_T, micro>; |
| 5b9daa7e BK |
842 | |
| 843 | /// milliseconds | |
| 16948c54 | 844 | using milliseconds = duration<_GLIBCXX_CHRONO_INT64_T, milli>; |
| 94a86be0 | 845 | |
| 5b9daa7e | 846 | /// seconds |
| 16948c54 | 847 | using seconds = duration<_GLIBCXX_CHRONO_INT64_T>; |
| 5b9daa7e BK |
848 | |
| 849 | /// minutes | |
| 16948c54 | 850 | using minutes = duration<_GLIBCXX_CHRONO_INT64_T, ratio< 60>>; |
| 5b9daa7e BK |
851 | |
| 852 | /// hours | |
| 16948c54 JW |
853 | using hours = duration<_GLIBCXX_CHRONO_INT64_T, ratio<3600>>; |
| 854 | ||
| 855 | #if __cplusplus > 201703L | |
| 856 | /// days | |
| 857 | using days = duration<_GLIBCXX_CHRONO_INT64_T, ratio<86400>>; | |
| 858 | ||
| 859 | /// weeks | |
| 860 | using weeks = duration<_GLIBCXX_CHRONO_INT64_T, ratio<604800>>; | |
| 861 | ||
| 862 | /// years | |
| 863 | using years = duration<_GLIBCXX_CHRONO_INT64_T, ratio<31556952>>; | |
| 864 | ||
| 865 | /// months | |
| 866 | using months = duration<_GLIBCXX_CHRONO_INT64_T, ratio<2629746>>; | |
| 867 | #endif // C++20 | |
| 8ba7f29e JW |
868 | |
| 869 | #undef _GLIBCXX_CHRONO_INT64_T | |
| 15e38d0d | 870 | |
| 16684e9c | 871 | template<typename _Clock, typename _Dur> |
| ad68e9fc | 872 | struct time_point |
| 15e38d0d | 873 | { |
| 16948c54 JW |
874 | static_assert(__is_duration<_Dur>::value, |
| 875 | "duration must be a specialization of std::chrono::duration"); | |
| 876 | ||
| 877 | typedef _Clock clock; | |
| 878 | typedef _Dur duration; | |
| 879 | typedef typename duration::rep rep; | |
| 16684e9c | 880 | typedef typename duration::period period; |
| ad68e9fc | 881 | |
| 94a86be0 | 882 | constexpr time_point() : __d(duration::zero()) |
| ad68e9fc BK |
883 | { } |
| 884 | ||
| 94a86be0 BK |
885 | constexpr explicit time_point(const duration& __dur) |
| 886 | : __d(__dur) | |
| ad68e9fc BK |
887 | { } |
| 888 | ||
| 889 | // conversions | |
| d0dda804 JW |
890 | template<typename _Dur2, |
| 891 | typename = _Require<is_convertible<_Dur2, _Dur>>> | |
| 16684e9c | 892 | constexpr time_point(const time_point<clock, _Dur2>& __t) |
| ad68e9fc BK |
893 | : __d(__t.time_since_epoch()) |
| 894 | { } | |
| 895 | ||
| 896 | // observer | |
| 94a86be0 | 897 | constexpr duration |
| ad68e9fc BK |
898 | time_since_epoch() const |
| 899 | { return __d; } | |
| 94a86be0 | 900 | |
| 03d5044b PP |
901 | #if __cplusplus > 201703L |
| 902 | constexpr time_point& | |
| 903 | operator++() | |
| 904 | { | |
| 905 | ++__d; | |
| 906 | return *this; | |
| 907 | } | |
| 908 | ||
| 909 | constexpr time_point | |
| 910 | operator++(int) | |
| 911 | { return time_point{__d++}; } | |
| 912 | ||
| 913 | constexpr time_point& | |
| 914 | operator--() | |
| 915 | { | |
| 916 | --__d; | |
| 917 | return *this; | |
| 918 | } | |
| 919 | ||
| 920 | constexpr time_point | |
| 921 | operator--(int) | |
| 922 | { return time_point{__d--}; } | |
| 923 | #endif | |
| 924 | ||
| ad68e9fc | 925 | // arithmetic |
| 1dee318a | 926 | _GLIBCXX17_CONSTEXPR time_point& |
| ad68e9fc BK |
927 | operator+=(const duration& __dur) |
| 928 | { | |
| 929 | __d += __dur; | |
| 930 | return *this; | |
| 931 | } | |
| 94a86be0 | 932 | |
| 1dee318a | 933 | _GLIBCXX17_CONSTEXPR time_point& |
| ad68e9fc BK |
934 | operator-=(const duration& __dur) |
| 935 | { | |
| 936 | __d -= __dur; | |
| 937 | return *this; | |
| 938 | } | |
| 94a86be0 | 939 | |
| ad68e9fc | 940 | // special values |
| 94a86be0 | 941 | static constexpr time_point |
| 5e9aed14 | 942 | min() noexcept |
| ad68e9fc | 943 | { return time_point(duration::min()); } |
| 94a86be0 BK |
944 | |
| 945 | static constexpr time_point | |
| 5e9aed14 | 946 | max() noexcept |
| ad68e9fc | 947 | { return time_point(duration::max()); } |
| 94a86be0 | 948 | |
| ad68e9fc BK |
949 | private: |
| 950 | duration __d; | |
| 951 | }; | |
| 94a86be0 | 952 | |
| 5b9daa7e | 953 | /// time_point_cast |
| 16684e9c | 954 | template<typename _ToDur, typename _Clock, typename _Dur> |
| a4eeb822 PC |
955 | constexpr typename enable_if<__is_duration<_ToDur>::value, |
| 956 | time_point<_Clock, _ToDur>>::type | |
| 16684e9c | 957 | time_point_cast(const time_point<_Clock, _Dur>& __t) |
| 15e38d0d | 958 | { |
| 16948c54 | 959 | typedef time_point<_Clock, _ToDur> __time_point; |
| 16684e9c | 960 | return __time_point(duration_cast<_ToDur>(__t.time_since_epoch())); |
| 15e38d0d CF |
961 | } |
| 962 | ||
| 5f6acdfb JW |
963 | #if __cplusplus > 201402L |
| 964 | template<typename _ToDur, typename _Clock, typename _Dur> | |
| 965 | constexpr | |
| 966 | enable_if_t<__is_duration<_ToDur>::value, time_point<_Clock, _ToDur>> | |
| 967 | floor(const time_point<_Clock, _Dur>& __tp) | |
| 968 | { | |
| 969 | return time_point<_Clock, _ToDur>{ | |
| 970 | chrono::floor<_ToDur>(__tp.time_since_epoch())}; | |
| 971 | } | |
| 972 | ||
| 973 | template<typename _ToDur, typename _Clock, typename _Dur> | |
| 974 | constexpr | |
| 975 | enable_if_t<__is_duration<_ToDur>::value, time_point<_Clock, _ToDur>> | |
| 976 | ceil(const time_point<_Clock, _Dur>& __tp) | |
| 977 | { | |
| 978 | return time_point<_Clock, _ToDur>{ | |
| 979 | chrono::ceil<_ToDur>(__tp.time_since_epoch())}; | |
| 980 | } | |
| 981 | ||
| 982 | template<typename _ToDur, typename _Clock, typename _Dur> | |
| 983 | constexpr enable_if_t< | |
| 984 | __and_<__is_duration<_ToDur>, | |
| 985 | __not_<treat_as_floating_point<typename _ToDur::rep>>>::value, | |
| 986 | time_point<_Clock, _ToDur>> | |
| 987 | round(const time_point<_Clock, _Dur>& __tp) | |
| 988 | { | |
| 989 | return time_point<_Clock, _ToDur>{ | |
| 990 | chrono::round<_ToDur>(__tp.time_since_epoch())}; | |
| 991 | } | |
| 992 | #endif // C++17 | |
| 993 | ||
| f2ce64b5 JW |
994 | /// @{ |
| 995 | /// @relates time_point | |
| c34d3fd3 JW |
996 | |
| 997 | /// Adjust a time point forwards by the given duration. | |
| 16684e9c | 998 | template<typename _Clock, typename _Dur1, |
| 94a86be0 | 999 | typename _Rep2, typename _Period2> |
| a4eeb822 | 1000 | constexpr time_point<_Clock, |
| 16684e9c BK |
1001 | typename common_type<_Dur1, duration<_Rep2, _Period2>>::type> |
| 1002 | operator+(const time_point<_Clock, _Dur1>& __lhs, | |
| 94a86be0 | 1003 | const duration<_Rep2, _Period2>& __rhs) |
| 15e38d0d | 1004 | { |
| 16684e9c BK |
1005 | typedef duration<_Rep2, _Period2> __dur2; |
| 1006 | typedef typename common_type<_Dur1,__dur2>::type __ct; | |
| 16948c54 | 1007 | typedef time_point<_Clock, __ct> __time_point; |
| 1b97ec17 | 1008 | return __time_point(__lhs.time_since_epoch() + __rhs); |
| 15e38d0d CF |
1009 | } |
| 1010 | ||
| c34d3fd3 | 1011 | /// Adjust a time point forwards by the given duration. |
| 15e38d0d | 1012 | template<typename _Rep1, typename _Period1, |
| 16684e9c | 1013 | typename _Clock, typename _Dur2> |
| a4eeb822 | 1014 | constexpr time_point<_Clock, |
| 16684e9c | 1015 | typename common_type<duration<_Rep1, _Period1>, _Dur2>::type> |
| 94a86be0 | 1016 | operator+(const duration<_Rep1, _Period1>& __lhs, |
| 16684e9c | 1017 | const time_point<_Clock, _Dur2>& __rhs) |
| 33ac58d5 | 1018 | { |
| 1b97ec17 BK |
1019 | typedef duration<_Rep1, _Period1> __dur1; |
| 1020 | typedef typename common_type<__dur1,_Dur2>::type __ct; | |
| 16948c54 | 1021 | typedef time_point<_Clock, __ct> __time_point; |
| 33ac58d5 | 1022 | return __time_point(__rhs.time_since_epoch() + __lhs); |
| 1b97ec17 | 1023 | } |
| 15e38d0d | 1024 | |
| c34d3fd3 | 1025 | /// Adjust a time point backwards by the given duration. |
| 16684e9c | 1026 | template<typename _Clock, typename _Dur1, |
| 94a86be0 | 1027 | typename _Rep2, typename _Period2> |
| a4eeb822 | 1028 | constexpr time_point<_Clock, |
| 16684e9c BK |
1029 | typename common_type<_Dur1, duration<_Rep2, _Period2>>::type> |
| 1030 | operator-(const time_point<_Clock, _Dur1>& __lhs, | |
| 94a86be0 | 1031 | const duration<_Rep2, _Period2>& __rhs) |
| 33ac58d5 | 1032 | { |
| 1b97ec17 BK |
1033 | typedef duration<_Rep2, _Period2> __dur2; |
| 1034 | typedef typename common_type<_Dur1,__dur2>::type __ct; | |
| 16948c54 | 1035 | typedef time_point<_Clock, __ct> __time_point; |
| 33ac58d5 | 1036 | return __time_point(__lhs.time_since_epoch() -__rhs); |
| 1b97ec17 | 1037 | } |
| 15e38d0d | 1038 | |
| c34d3fd3 | 1039 | /// The difference between two time points (as a duration) |
| 16684e9c | 1040 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1041 | constexpr typename common_type<_Dur1, _Dur2>::type |
| 16684e9c BK |
1042 | operator-(const time_point<_Clock, _Dur1>& __lhs, |
| 1043 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d | 1044 | { return __lhs.time_since_epoch() - __rhs.time_since_epoch(); } |
| f2ce64b5 JW |
1045 | /// @} |
| 1046 | ||
| 1047 | /** @{ | |
| 1048 | * Comparisons for time_point | |
| 1049 | * @relates chrono::time_point | |
| 1050 | */ | |
| 15e38d0d | 1051 | |
| 16684e9c | 1052 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1053 | constexpr bool |
| 16684e9c BK |
1054 | operator==(const time_point<_Clock, _Dur1>& __lhs, |
| 1055 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1056 | { return __lhs.time_since_epoch() == __rhs.time_since_epoch(); } |
| 1057 | ||
| 27c17177 JW |
1058 | #if __cpp_lib_three_way_comparison |
| 1059 | template<typename _Clock, typename _Dur1, | |
| 1060 | three_way_comparable_with<_Dur1> _Dur2> | |
| 1061 | constexpr auto | |
| 1062 | operator<=>(const time_point<_Clock, _Dur1>& __lhs, | |
| 1063 | const time_point<_Clock, _Dur2>& __rhs) | |
| 1064 | { return __lhs.time_since_epoch() <=> __rhs.time_since_epoch(); } | |
| 1065 | #else | |
| 16684e9c | 1066 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1067 | constexpr bool |
| 16684e9c BK |
1068 | operator!=(const time_point<_Clock, _Dur1>& __lhs, |
| 1069 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d | 1070 | { return !(__lhs == __rhs); } |
| 27c17177 | 1071 | #endif |
| 15e38d0d | 1072 | |
| 16684e9c | 1073 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1074 | constexpr bool |
| 16684e9c BK |
1075 | operator<(const time_point<_Clock, _Dur1>& __lhs, |
| 1076 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1077 | { return __lhs.time_since_epoch() < __rhs.time_since_epoch(); } |
| 1078 | ||
| 16684e9c | 1079 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1080 | constexpr bool |
| 16684e9c BK |
1081 | operator<=(const time_point<_Clock, _Dur1>& __lhs, |
| 1082 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1083 | { return !(__rhs < __lhs); } |
| 1084 | ||
| 16684e9c | 1085 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1086 | constexpr bool |
| 16684e9c BK |
1087 | operator>(const time_point<_Clock, _Dur1>& __lhs, |
| 1088 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1089 | { return __rhs < __lhs; } |
| 1090 | ||
| 16684e9c | 1091 | template<typename _Clock, typename _Dur1, typename _Dur2> |
| a4eeb822 | 1092 | constexpr bool |
| 16684e9c BK |
1093 | operator>=(const time_point<_Clock, _Dur1>& __lhs, |
| 1094 | const time_point<_Clock, _Dur2>& __rhs) | |
| 15e38d0d CF |
1095 | { return !(__lhs < __rhs); } |
| 1096 | ||
| f0b88346 | 1097 | /// @} |
| 1f08a749 | 1098 | |
| 33ac58d5 | 1099 | // Clocks. |
| 1f08a749 | 1100 | |
| 33ac58d5 | 1101 | // Why nanosecond resolution as the default? |
| b236debd | 1102 | // Why have std::system_clock always count in the highest |
| 1f08a749 BK |
1103 | // resolution (ie nanoseconds), even if on some OSes the low 3 |
| 1104 | // or 9 decimal digits will be always zero? This allows later | |
| 1105 | // implementations to change the system_clock::now() | |
| 1106 | // implementation any time to provide better resolution without | |
| 1107 | // changing function signature or units. | |
| 1108 | ||
| 1109 | // To support the (forward) evolution of the library's defined | |
| 1110 | // clocks, wrap inside inline namespace so that the current | |
| 1111 | // defintions of system_clock, steady_clock, and | |
| 1112 | // high_resolution_clock types are uniquely mangled. This way, new | |
| 1113 | // code can use the latests clocks, while the library can contain | |
| 1114 | // compatibility definitions for previous versions. At some | |
| 1115 | // point, when these clocks settle down, the inlined namespaces | |
| 1116 | // can be removed. XXX GLIBCXX_ABI Deprecated | |
| 1117 | inline namespace _V2 { | |
| 1118 | ||
| 1119 | /** | |
| 1120 | * @brief System clock. | |
| 1121 | * | |
| 1122 | * Time returned represents wall time from the system-wide clock. | |
| c34d3fd3 | 1123 | * @ingroup chrono |
| 1f08a749 | 1124 | */ |
| 88c4d6b7 | 1125 | struct system_clock |
| 15e38d0d | 1126 | { |
| 16948c54 JW |
1127 | typedef chrono::nanoseconds duration; |
| 1128 | typedef duration::rep rep; | |
| 1129 | typedef duration::period period; | |
| 85db9dcc | 1130 | typedef chrono::time_point<system_clock, duration> time_point; |
| 15e38d0d | 1131 | |
| 94a86be0 BK |
1132 | static_assert(system_clock::duration::min() |
| 1133 | < system_clock::duration::zero(), | |
| 1134 | "a clock's minimum duration cannot be less than its epoch"); | |
| 1135 | ||
| 1b97ec17 | 1136 | static constexpr bool is_steady = false; |
| 15e38d0d CF |
1137 | |
| 1138 | static time_point | |
| 8535715d | 1139 | now() noexcept; |
| 15e38d0d CF |
1140 | |
| 1141 | // Map to C API | |
| 1142 | static std::time_t | |
| 8535715d | 1143 | to_time_t(const time_point& __t) noexcept |
| 15e38d0d | 1144 | { |
| 16684e9c BK |
1145 | return std::time_t(duration_cast<chrono::seconds> |
| 1146 | (__t.time_since_epoch()).count()); | |
| 15e38d0d CF |
1147 | } |
| 1148 | ||
| 1149 | static time_point | |
| 8535715d | 1150 | from_time_t(std::time_t __t) noexcept |
| 94a86be0 | 1151 | { |
| 16684e9c BK |
1152 | typedef chrono::time_point<system_clock, seconds> __from; |
| 1153 | return time_point_cast<system_clock::duration> | |
| 1154 | (__from(chrono::seconds(__t))); | |
| 15e38d0d | 1155 | } |
| 15e38d0d CF |
1156 | }; |
| 1157 | ||
| 1f08a749 BK |
1158 | |
| 1159 | /** | |
| 1160 | * @brief Monotonic clock | |
| 1161 | * | |
| 1162 | * Time returned has the property of only increasing at a uniform rate. | |
| c34d3fd3 | 1163 | * @ingroup chrono |
| 1f08a749 | 1164 | */ |
| 1b97ec17 | 1165 | struct steady_clock |
| 88399079 | 1166 | { |
| 16948c54 JW |
1167 | typedef chrono::nanoseconds duration; |
| 1168 | typedef duration::rep rep; | |
| 1169 | typedef duration::period period; | |
| 1170 | typedef chrono::time_point<steady_clock, duration> time_point; | |
| 88399079 | 1171 | |
| 1b97ec17 | 1172 | static constexpr bool is_steady = true; |
| 88399079 CF |
1173 | |
| 1174 | static time_point | |
| 8535715d | 1175 | now() noexcept; |
| 88399079 | 1176 | }; |
| 88399079 | 1177 | |
| 1f08a749 BK |
1178 | |
| 1179 | /** | |
| 1180 | * @brief Highest-resolution clock | |
| 1181 | * | |
| 1182 | * This is the clock "with the shortest tick period." Alias to | |
| 1183 | * std::system_clock until higher-than-nanosecond definitions | |
| 1184 | * become feasible. | |
| c34d3fd3 | 1185 | * @ingroup chrono |
| 1f08a749 BK |
1186 | */ |
| 1187 | using high_resolution_clock = system_clock; | |
| 1188 | ||
| 88c4d6b7 | 1189 | } // end inline namespace _V2 |
| bf1fc37b JW |
1190 | |
| 1191 | #if __cplusplus > 201703L | |
| 1192 | template<typename _Duration> | |
| 1193 | using sys_time = time_point<system_clock, _Duration>; | |
| 1194 | using sys_seconds = sys_time<seconds>; | |
| 16948c54 | 1195 | using sys_days = sys_time<days>; |
| bf1fc37b JW |
1196 | |
| 1197 | using file_clock = ::std::filesystem::__file_clock; | |
| 1198 | ||
| 1199 | template<typename _Duration> | |
| 1200 | using file_time = time_point<file_clock, _Duration>; | |
| 1201 | ||
| 1202 | template<> struct is_clock<system_clock> : true_type { }; | |
| 1203 | template<> struct is_clock<steady_clock> : true_type { }; | |
| 1204 | template<> struct is_clock<file_clock> : true_type { }; | |
| 1205 | ||
| 1206 | template<> inline constexpr bool is_clock_v<system_clock> = true; | |
| 1207 | template<> inline constexpr bool is_clock_v<steady_clock> = true; | |
| 1208 | template<> inline constexpr bool is_clock_v<file_clock> = true; | |
| 16948c54 JW |
1209 | |
| 1210 | struct local_t { }; | |
| 1211 | template<typename _Duration> | |
| 1212 | using local_time = time_point<local_t, _Duration>; | |
| 1213 | using local_seconds = local_time<seconds>; | |
| 1214 | using local_days = local_time<days>; | |
| bf1fc37b | 1215 | |
| 03d5044b PP |
1216 | class utc_clock; |
| 1217 | class tai_clock; | |
| 1218 | class gps_clock; | |
| 5b9daa7e | 1219 | |
| 03d5044b PP |
1220 | template<typename _Duration> |
| 1221 | using utc_time = time_point<utc_clock, _Duration>; | |
| 1222 | using utc_seconds = utc_time<seconds>; | |
| 15e38d0d | 1223 | |
| 03d5044b PP |
1224 | template<typename _Duration> |
| 1225 | using tai_time = time_point<tai_clock, _Duration>; | |
| 1226 | using tai_seconds = tai_time<seconds>; | |
| a15f7cb8 | 1227 | |
| 03d5044b PP |
1228 | template<typename _Duration> |
| 1229 | using gps_time = time_point<gps_clock, _Duration>; | |
| 1230 | using gps_seconds = gps_time<seconds>; | |
| 1231 | ||
| 1232 | template<> struct is_clock<utc_clock> : true_type { }; | |
| 1233 | template<> struct is_clock<tai_clock> : true_type { }; | |
| 1234 | template<> struct is_clock<gps_clock> : true_type { }; | |
| 1235 | ||
| 1236 | template<> inline constexpr bool is_clock_v<utc_clock> = true; | |
| 1237 | template<> inline constexpr bool is_clock_v<tai_clock> = true; | |
| 1238 | template<> inline constexpr bool is_clock_v<gps_clock> = true; | |
| 1239 | ||
| 1240 | struct leap_second_info | |
| 1241 | { | |
| 1242 | bool is_leap_second; | |
| 1243 | seconds elapsed; | |
| 1244 | }; | |
| 1245 | ||
| 1246 | // CALENDRICAL TYPES | |
| 1247 | ||
| 1248 | // CLASS DECLARATIONS | |
| 1249 | class day; | |
| 1250 | class month; | |
| 1251 | class year; | |
| 1252 | class weekday; | |
| 1253 | class weekday_indexed; | |
| 1254 | class weekday_last; | |
| 1255 | class month_day; | |
| 1256 | class month_day_last; | |
| 1257 | class month_weekday; | |
| 1258 | class month_weekday_last; | |
| 1259 | class year_month; | |
| 1260 | class year_month_day; | |
| 1261 | class year_month_day_last; | |
| 1262 | class year_month_weekday; | |
| 1263 | class year_month_weekday_last; | |
| 1264 | ||
| 1265 | struct last_spec | |
| 1266 | { | |
| 1267 | explicit last_spec() = default; | |
| 1268 | ||
| 1269 | friend constexpr month_day_last | |
| 1270 | operator/(int __m, last_spec) noexcept; | |
| 1271 | ||
| 1272 | friend constexpr month_day_last | |
| 1273 | operator/(last_spec, int __m) noexcept; | |
| 1274 | }; | |
| 1275 | ||
| 1276 | inline constexpr last_spec last{}; | |
| 1277 | ||
| 1278 | namespace __detail | |
| 1279 | { | |
| 1280 | // Compute the remainder of the Euclidean division of __n divided by __d. | |
| 1281 | // Euclidean division truncates toward negative infinity and always | |
| 1282 | // produces a remainder in the range of [0,__d-1] (whereas standard | |
| 1283 | // division truncates toward zero and yields a nonpositive remainder | |
| 1284 | // for negative __n). | |
| 1285 | constexpr unsigned | |
| 1286 | __modulo(long long __n, unsigned __d) | |
| cd1464db | 1287 | { |
| 03d5044b PP |
1288 | if (__n >= 0) |
| 1289 | return __n % __d; | |
| 1290 | else | |
| 1291 | return (__d + (__n % __d)) % __d; | |
| cd1464db | 1292 | } |
| 1c9f675f | 1293 | |
| 03d5044b PP |
1294 | inline constexpr unsigned __days_per_month[12] |
| 1295 | = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
| 03d5044b | 1296 | } |
| 88c4d6b7 | 1297 | |
| 03d5044b | 1298 | // DAY |
| 1c9f675f | 1299 | |
| 03d5044b PP |
1300 | class day |
| 1301 | { | |
| 1302 | private: | |
| 1303 | unsigned char _M_d; | |
| 1c9f675f | 1304 | |
| 03d5044b PP |
1305 | public: |
| 1306 | day() = default; | |
| 1c9f675f | 1307 | |
| 03d5044b PP |
1308 | explicit constexpr |
| 1309 | day(unsigned __d) noexcept | |
| 1310 | : _M_d(__d) | |
| 1311 | { } | |
| 1c9f675f | 1312 | |
| 03d5044b PP |
1313 | constexpr day& |
| 1314 | operator++() noexcept | |
| 1315 | { | |
| 1316 | ++_M_d; | |
| 1317 | return *this; | |
| 1318 | } | |
| 1c9f675f | 1319 | |
| 03d5044b PP |
1320 | constexpr day |
| 1321 | operator++(int) noexcept | |
| 1322 | { | |
| 1323 | auto __ret = *this; | |
| 1324 | ++(*this); | |
| 1325 | return __ret; | |
| 1326 | } | |
| 1c9f675f | 1327 | |
| 03d5044b PP |
1328 | constexpr day& |
| 1329 | operator--() noexcept | |
| 1330 | { | |
| 1331 | --_M_d; | |
| 1332 | return *this; | |
| 1333 | } | |
| 1c9f675f | 1334 | |
| 03d5044b PP |
1335 | constexpr day |
| 1336 | operator--(int) noexcept | |
| 1337 | { | |
| 1338 | auto __ret = *this; | |
| 1339 | --(*this); | |
| 1340 | return __ret; | |
| 1341 | } | |
| 88c4d6b7 | 1342 | |
| 03d5044b PP |
1343 | constexpr day& |
| 1344 | operator+=(const days& __d) noexcept | |
| 1345 | { | |
| 1346 | *this = *this + __d; | |
| 1347 | return *this; | |
| 1348 | } | |
| 88c4d6b7 | 1349 | |
| 03d5044b PP |
1350 | constexpr day& |
| 1351 | operator-=(const days& __d) noexcept | |
| 1352 | { | |
| 1353 | *this = *this - __d; | |
| 1354 | return *this; | |
| 1355 | } | |
| 88c4d6b7 | 1356 | |
| 03d5044b PP |
1357 | constexpr explicit |
| 1358 | operator unsigned() const noexcept | |
| 1359 | { return _M_d; } | |
| 88c4d6b7 | 1360 | |
| 03d5044b PP |
1361 | constexpr bool |
| 1362 | ok() const noexcept | |
| 1363 | { return 1 <= _M_d && _M_d <= 31; } | |
| 1364 | ||
| 1365 | friend constexpr bool | |
| 1366 | operator==(const day& __x, const day& __y) noexcept | |
| 1367 | { return unsigned{__x} == unsigned{__y}; } | |
| 1368 | ||
| 1369 | friend constexpr strong_ordering | |
| 1370 | operator<=>(const day& __x, const day& __y) noexcept | |
| 1371 | { return unsigned{__x} <=> unsigned{__y}; } | |
| 1372 | ||
| 1373 | friend constexpr day | |
| 1374 | operator+(const day& __x, const days& __y) noexcept | |
| 1375 | { return day(unsigned{__x} + __y.count()); } | |
| 1376 | ||
| 1377 | friend constexpr day | |
| 1378 | operator+(const days& __x, const day& __y) noexcept | |
| 1379 | { return __y + __x; } | |
| 1380 | ||
| 1381 | friend constexpr day | |
| 1382 | operator-(const day& __x, const days& __y) noexcept | |
| 1383 | { return __x + -__y; } | |
| 1384 | ||
| 1385 | friend constexpr days | |
| 1386 | operator-(const day& __x, const day& __y) noexcept | |
| 1387 | { return days{int(unsigned{__x}) - int(unsigned{__y})}; } | |
| 1388 | ||
| 1389 | friend constexpr month_day | |
| 1390 | operator/(const month& __m, const day& __d) noexcept; | |
| 1391 | ||
| 1392 | friend constexpr month_day | |
| 1393 | operator/(int __m, const day& __d) noexcept; | |
| 1394 | ||
| 1395 | friend constexpr month_day | |
| 1396 | operator/(const day& __d, const month& __m) noexcept; | |
| 1397 | ||
| 1398 | friend constexpr month_day | |
| 1399 | operator/(const day& __d, int __m) noexcept; | |
| 1400 | ||
| 1401 | friend constexpr year_month_day | |
| 1402 | operator/(const year_month& __ym, const day& __d) noexcept; | |
| 1403 | ||
| 1404 | // TODO: Implement operator<<, to_stream, from_stream. | |
| 1405 | }; | |
| 1406 | ||
| 1407 | // MONTH | |
| 1408 | ||
| 1409 | class month | |
| 1410 | { | |
| 1411 | private: | |
| 1412 | unsigned char _M_m; | |
| 1413 | ||
| 1414 | public: | |
| 1415 | month() = default; | |
| 1416 | ||
| 1417 | explicit constexpr | |
| 1418 | month(unsigned __m) noexcept | |
| 1419 | : _M_m(__m) | |
| 1420 | { } | |
| 1421 | ||
| 1422 | constexpr month& | |
| 1423 | operator++() noexcept | |
| 1424 | { | |
| 1425 | *this += months{1}; | |
| 1426 | return *this; | |
| 1427 | } | |
| 1428 | ||
| 1429 | constexpr month | |
| 1430 | operator++(int) noexcept | |
| 1431 | { | |
| 1432 | auto __ret = *this; | |
| 1433 | ++(*this); | |
| 1434 | return __ret; | |
| 1435 | } | |
| 1436 | ||
| 1437 | constexpr month& | |
| 1438 | operator--() noexcept | |
| 1439 | { | |
| 1440 | *this -= months{1}; | |
| 1441 | return *this; | |
| 1442 | } | |
| 1443 | ||
| 1444 | constexpr month | |
| 1445 | operator--(int) noexcept | |
| 1446 | { | |
| 1447 | auto __ret = *this; | |
| 1448 | --(*this); | |
| 1449 | return __ret; | |
| 1450 | } | |
| 1451 | ||
| 1452 | constexpr month& | |
| 1453 | operator+=(const months& __m) noexcept | |
| 1454 | { | |
| 1455 | *this = *this + __m; | |
| 1456 | return *this; | |
| 1457 | } | |
| 1458 | ||
| 1459 | constexpr month& | |
| 1460 | operator-=(const months& __m) noexcept | |
| 1461 | { | |
| 1462 | *this = *this - __m; | |
| 1463 | return *this; | |
| 1464 | } | |
| 1465 | ||
| 1466 | explicit constexpr | |
| 1467 | operator unsigned() const noexcept | |
| 1468 | { return _M_m; } | |
| 1469 | ||
| 1470 | constexpr bool | |
| 1471 | ok() const noexcept | |
| 1472 | { return 1 <= _M_m && _M_m <= 12; } | |
| 1473 | ||
| 1474 | friend constexpr bool | |
| 1475 | operator==(const month& __x, const month& __y) noexcept | |
| 1476 | { return unsigned{__x} == unsigned{__y}; } | |
| 1477 | ||
| 1478 | friend constexpr strong_ordering | |
| 1479 | operator<=>(const month& __x, const month& __y) noexcept | |
| 1480 | { return unsigned{__x} <=> unsigned{__y}; } | |
| 1481 | ||
| 1482 | friend constexpr month | |
| 1483 | operator+(const month& __x, const months& __y) noexcept | |
| 1484 | { | |
| 1485 | auto __n = static_cast<long long>(unsigned{__x}) + (__y.count() - 1); | |
| 1486 | return month{__detail::__modulo(__n, 12) + 1}; | |
| 1487 | } | |
| 1488 | ||
| 1489 | friend constexpr month | |
| 1490 | operator+(const months& __x, const month& __y) noexcept | |
| 1491 | { return __y + __x; } | |
| 1492 | ||
| 1493 | friend constexpr month | |
| 1494 | operator-(const month& __x, const months& __y) noexcept | |
| 1495 | { return __x + -__y; } | |
| 1496 | ||
| 1497 | friend constexpr months | |
| 1498 | operator-(const month& __x, const month& __y) noexcept | |
| 1499 | { | |
| 1500 | const auto __dm = int(unsigned(__x)) - int(unsigned(__y)); | |
| 1501 | return months{__dm < 0 ? 12 + __dm : __dm}; | |
| 1502 | } | |
| 1503 | ||
| 1504 | friend constexpr year_month | |
| 1505 | operator/(const year& __y, const month& __m) noexcept; | |
| 1506 | ||
| 1507 | friend constexpr month_day | |
| 1508 | operator/(const month& __m, int __d) noexcept; | |
| 1509 | ||
| 1510 | friend constexpr month_day_last | |
| 1511 | operator/(const month& __m, last_spec) noexcept; | |
| 1512 | ||
| 1513 | friend constexpr month_day_last | |
| 1514 | operator/(last_spec, const month& __m) noexcept; | |
| 1515 | ||
| 1516 | friend constexpr month_weekday | |
| 1517 | operator/(const month& __m, const weekday_indexed& __wdi) noexcept; | |
| 1518 | ||
| 1519 | friend constexpr month_weekday | |
| 1520 | operator/(const weekday_indexed& __wdi, const month& __m) noexcept; | |
| 1521 | ||
| 1522 | friend constexpr month_weekday_last | |
| 1523 | operator/(const month& __m, const weekday_last& __wdl) noexcept; | |
| 1524 | ||
| 1525 | friend constexpr month_weekday_last | |
| 1526 | operator/(const weekday_last& __wdl, const month& __m) noexcept; | |
| 1527 | ||
| 1528 | // TODO: Implement operator<<, to_stream, from_stream. | |
| 1529 | }; | |
| 1530 | ||
| 1531 | inline constexpr month January{1}; | |
| 1532 | inline constexpr month February{2}; | |
| 1533 | inline constexpr month March{3}; | |
| 1534 | inline constexpr month April{4}; | |
| 1535 | inline constexpr month May{5}; | |
| 1536 | inline constexpr month June{6}; | |
| 1537 | inline constexpr month July{7}; | |
| 1538 | inline constexpr month August{8}; | |
| 1539 | inline constexpr month September{9}; | |
| 1540 | inline constexpr month October{10}; | |
| 1541 | inline constexpr month November{11}; | |
| 1542 | inline constexpr month December{12}; | |
| 1543 | ||
| 1544 | // YEAR | |
| 1545 | ||
| 1546 | class year | |
| 1547 | { | |
| 1548 | private: | |
| 1549 | short _M_y; | |
| 1550 | ||
| 1551 | public: | |
| 1552 | year() = default; | |
| 1553 | ||
| 1554 | explicit constexpr | |
| 1555 | year(int __y) noexcept | |
| 1556 | : _M_y{static_cast<short>(__y)} | |
| 1557 | { } | |
| 1558 | ||
| 1559 | static constexpr year | |
| 1560 | min() noexcept | |
| 1561 | { return year{-32767}; } | |
| 1562 | ||
| 1563 | static constexpr year | |
| 1564 | max() noexcept | |
| 1565 | { return year{32767}; } | |
| 1566 | ||
| 1567 | constexpr year& | |
| 1568 | operator++() noexcept | |
| 1569 | { | |
| 1570 | ++_M_y; | |
| 1571 | return *this; | |
| 1572 | } | |
| 1573 | ||
| 1574 | constexpr year | |
| 1575 | operator++(int) noexcept | |
| 1576 | { | |
| 1577 | auto __ret = *this; | |
| 1578 | ++(*this); | |
| 1579 | return __ret; | |
| 1580 | } | |
| 1581 | ||
| 1582 | constexpr year& | |
| 1583 | operator--() noexcept | |
| 1584 | { | |
| 1585 | --_M_y; | |
| 1586 | return *this; | |
| 1587 | } | |
| 1588 | ||
| 1589 | constexpr year | |
| 1590 | operator--(int) noexcept | |
| 1591 | { | |
| 1592 | auto __ret = *this; | |
| 1593 | --(*this); | |
| 1594 | return __ret; | |
| 1595 | } | |
| 1596 | ||
| 1597 | constexpr year& | |
| 1598 | operator+=(const years& __y) noexcept | |
| 1599 | { | |
| 1600 | *this = *this + __y; | |
| 1601 | return *this; | |
| 1602 | } | |
| 1603 | ||
| 1604 | constexpr year& | |
| 1605 | operator-=(const years& __y) noexcept | |
| 1606 | { | |
| 1607 | *this = *this - __y; | |
| 1608 | return *this; | |
| 1609 | } | |
| 1610 | ||
| 1611 | constexpr year | |
| 1612 | operator+() const noexcept | |
| 1613 | { return *this; } | |
| 1614 | ||
| 1615 | constexpr year | |
| 1616 | operator-() const noexcept | |
| 1617 | { return year{-_M_y}; } | |
| 1618 | ||
| 1619 | constexpr bool | |
| 1620 | is_leap() const noexcept | |
| 12679397 CN |
1621 | { |
| 1622 | // Testing divisibility by 100 first gives better performance, that is, | |
| 1623 | // return (_M_y % 100 != 0 || _M_y % 400 == 0) && _M_y % 4 == 0; | |
| 1624 | ||
| 1625 | // It gets even faster if _M_y is in [-536870800, 536870999] | |
| 1626 | // (which is the case here) and _M_y % 100 is replaced by | |
| 1627 | // __is_multiple_of_100 below. | |
| 1628 | ||
| 1629 | // References: | |
| 1630 | // [1] https://github.com/cassioneri/calendar | |
| 1631 | // [2] https://accu.org/journals/overload/28/155/overload155.pdf#page=16 | |
| 1632 | ||
| 4a404f66 JW |
1633 | // Furthermore, if y%100 == 0, then y%400==0 is equivalent to y%16==0, |
| 1634 | // so we can simplify it to (!mult_100 && y % 4 == 0) || y % 16 == 0, | |
| b92d12d3 CN |
1635 | // which is equivalent to (y & (mult_100 ? 15 : 3)) == 0. |
| 1636 | // See https://gcc.gnu.org/pipermail/libstdc++/2021-June/052815.html | |
| 1637 | ||
| 12679397 CN |
1638 | constexpr uint32_t __multiplier = 42949673; |
| 1639 | constexpr uint32_t __bound = 42949669; | |
| 1640 | constexpr uint32_t __max_dividend = 1073741799; | |
| 1641 | constexpr uint32_t __offset = __max_dividend / 2 / 100 * 100; | |
| 1642 | const bool __is_multiple_of_100 | |
| 1643 | = __multiplier * (_M_y + __offset) < __bound; | |
| b92d12d3 | 1644 | return (_M_y & (__is_multiple_of_100 ? 15 : 3)) == 0; |
| 12679397 | 1645 | } |
| 03d5044b PP |
1646 | |
| 1647 | explicit constexpr | |
| 1648 | operator int() const noexcept | |
| 1649 | { return _M_y; } | |
| 1650 | ||
| 1651 | constexpr bool | |
| 1652 | ok() const noexcept | |
| 1653 | { return min()._M_y <= _M_y && _M_y <= max()._M_y; } | |
| 1654 | ||
| 1655 | friend constexpr bool | |
| 1656 | operator==(const year& __x, const year& __y) noexcept | |
| 1657 | { return int{__x} == int{__y}; } | |
| 1658 | ||
| 1659 | friend constexpr strong_ordering | |
| 1660 | operator<=>(const year& __x, const year& __y) noexcept | |
| 1661 | { return int{__x} <=> int{__y}; } | |
| 1662 | ||
| 1663 | friend constexpr year | |
| 1664 | operator+(const year& __x, const years& __y) noexcept | |
| b6b9fd4a | 1665 | { return year{int{__x} + static_cast<int>(__y.count())}; } |
| 03d5044b PP |
1666 | |
| 1667 | friend constexpr year | |
| 1668 | operator+(const years& __x, const year& __y) noexcept | |
| 1669 | { return __y + __x; } | |
| 1670 | ||
| 1671 | friend constexpr year | |
| 1672 | operator-(const year& __x, const years& __y) noexcept | |
| 1673 | { return __x + -__y; } | |
| 1674 | ||
| 1675 | friend constexpr years | |
| 1676 | operator-(const year& __x, const year& __y) noexcept | |
| 1677 | { return years{int{__x} - int{__y}}; } | |
| 1678 | ||
| 1679 | friend constexpr year_month | |
| 1680 | operator/(const year& __y, int __m) noexcept; | |
| 1681 | ||
| 1682 | friend constexpr year_month_day | |
| 1683 | operator/(const year& __y, const month_day& __md) noexcept; | |
| 1684 | ||
| 1685 | friend constexpr year_month_day | |
| 1686 | operator/(const month_day& __md, const year& __y) noexcept; | |
| 1687 | ||
| 1688 | friend constexpr year_month_day_last | |
| 1689 | operator/(const year& __y, const month_day_last& __mdl) noexcept; | |
| 1690 | ||
| 1691 | friend constexpr year_month_day_last | |
| 1692 | operator/(const month_day_last& __mdl, const year& __y) noexcept; | |
| 1693 | ||
| 1694 | friend constexpr year_month_weekday | |
| 1695 | operator/(const year& __y, const month_weekday& __mwd) noexcept; | |
| 1696 | ||
| 1697 | friend constexpr year_month_weekday | |
| 1698 | operator/(const month_weekday& __mwd, const year& __y) noexcept; | |
| 1699 | ||
| 1700 | friend constexpr year_month_weekday_last | |
| 1701 | operator/(const year& __y, const month_weekday_last& __mwdl) noexcept; | |
| 1702 | ||
| 1703 | friend constexpr year_month_weekday_last | |
| 1704 | operator/(const month_weekday_last& __mwdl, const year& __y) noexcept; | |
| 1705 | ||
| 1706 | // TODO: Implement operator<<, to_stream, from_stream. | |
| 1707 | }; | |
| 1708 | ||
| 1709 | // WEEKDAY | |
| 1710 | ||
| 1711 | class weekday | |
| 1712 | { | |
| 1713 | private: | |
| 1714 | unsigned char _M_wd; | |
| 1715 | ||
| 1716 | static constexpr weekday | |
| 1717 | _S_from_days(const days& __d) | |
| 1718 | { | |
| 1719 | auto __n = __d.count(); | |
| 1720 | return weekday(__n >= -4 ? (__n + 4) % 7 : (__n + 5) % 7 + 6); | |
| 1721 | } | |
| 1722 | ||
| 1723 | public: | |
| 1724 | weekday() = default; | |
| 1725 | ||
| 1726 | explicit constexpr | |
| 1727 | weekday(unsigned __wd) noexcept | |
| 1728 | : _M_wd(__wd == 7 ? 0 : __wd) // __wd % 7 ? | |
| 1729 | { } | |
| 1730 | ||
| 1731 | constexpr | |
| 1732 | weekday(const sys_days& __dp) noexcept | |
| 1733 | : weekday{_S_from_days(__dp.time_since_epoch())} | |
| 1734 | { } | |
| 1735 | ||
| 1736 | explicit constexpr | |
| 1737 | weekday(const local_days& __dp) noexcept | |
| 1738 | : weekday{sys_days{__dp.time_since_epoch()}} | |
| 1739 | { } | |
| 1740 | ||
| 1741 | constexpr weekday& | |
| 1742 | operator++() noexcept | |
| 1743 | { | |
| 1744 | *this += days{1}; | |
| 1745 | return *this; | |
| 1746 | } | |
| 1747 | ||
| 1748 | constexpr weekday | |
| 1749 | operator++(int) noexcept | |
| 1750 | { | |
| 1751 | auto __ret = *this; | |
| 1752 | ++(*this); | |
| 1753 | return __ret; | |
| 1754 | } | |
| 1755 | ||
| 1756 | constexpr weekday& | |
| 1757 | operator--() noexcept | |
| 1758 | { | |
| 1759 | *this -= days{1}; | |
| 1760 | return *this; | |
| 1761 | } | |
| 1762 | ||
| 1763 | constexpr weekday | |
| 1764 | operator--(int) noexcept | |
| 1765 | { | |
| 1766 | auto __ret = *this; | |
| 1767 | --(*this); | |
| 1768 | return __ret; | |
| 1769 | } | |
| 1770 | ||
| 1771 | constexpr weekday& | |
| 1772 | operator+=(const days& __d) noexcept | |
| 1773 | { | |
| 1774 | *this = *this + __d; | |
| 1775 | return *this; | |
| 1776 | } | |
| 1777 | ||
| 1778 | constexpr weekday& | |
| 1779 | operator-=(const days& __d) noexcept | |
| 1780 | { | |
| 1781 | *this = *this - __d; | |
| 1782 | return *this; | |
| 1783 | } | |
| 1784 | ||
| 1785 | constexpr unsigned | |
| 1786 | c_encoding() const noexcept | |
| 1787 | { return _M_wd; } | |
| 1788 | ||
| 1789 | constexpr unsigned | |
| 1790 | iso_encoding() const noexcept | |
| 1791 | { return _M_wd == 0u ? 7u : _M_wd; } | |
| 1792 | ||
| 1793 | constexpr bool | |
| 1794 | ok() const noexcept | |
| 1795 | { return _M_wd <= 6; } | |
| 1796 | ||
| 1797 | constexpr weekday_indexed | |
| 1798 | operator[](unsigned __index) const noexcept; | |
| 1799 | ||
| 1800 | constexpr weekday_last | |
| 1801 | operator[](last_spec) const noexcept; | |
| 1802 | ||
| 1803 | friend constexpr bool | |
| 1804 | operator==(const weekday& __x, const weekday& __y) noexcept | |
| 1805 | { return __x._M_wd == __y._M_wd; } | |
| 1806 | ||
| 1807 | friend constexpr weekday | |
| 1808 | operator+(const weekday& __x, const days& __y) noexcept | |
| 1809 | { | |
| 1810 | auto __n = static_cast<long long>(__x._M_wd) + __y.count(); | |
| 1811 | return weekday{__detail::__modulo(__n, 7)}; | |
| 1812 | } | |
| 1813 | ||
| 1814 | friend constexpr weekday | |
| 1815 | operator+(const days& __x, const weekday& __y) noexcept | |
| 1816 | { return __y + __x; } | |
| 1817 | ||
| 1818 | friend constexpr weekday | |
| 1819 | operator-(const weekday& __x, const days& __y) noexcept | |
| 1820 | { return __x + -__y; } | |
| 1821 | ||
| 1822 | friend constexpr days | |
| 1823 | operator-(const weekday& __x, const weekday& __y) noexcept | |
| 1824 | { | |
| 1825 | auto __n = static_cast<long long>(__x._M_wd) - __y._M_wd; | |
| 1826 | return days{__detail::__modulo(__n, 7)}; | |
| 1827 | } | |
| 1828 | ||
| 1829 | // TODO: operator<<, from_stream. | |
| 1830 | }; | |
| 1831 | ||
| 1832 | inline constexpr weekday Sunday{0}; | |
| 1833 | inline constexpr weekday Monday{1}; | |
| 1834 | inline constexpr weekday Tuesday{2}; | |
| 1835 | inline constexpr weekday Wednesday{3}; | |
| 1836 | inline constexpr weekday Thursday{4}; | |
| 1837 | inline constexpr weekday Friday{5}; | |
| 1838 | inline constexpr weekday Saturday{6}; | |
| 1839 | ||
| 1840 | // WEEKDAY_INDEXED | |
| 1841 | ||
| 1842 | class weekday_indexed | |
| 1843 | { | |
| 1844 | private: | |
| 1845 | chrono::weekday _M_wd; | |
| 1846 | unsigned char _M_index; | |
| 1847 | ||
| 1848 | public: | |
| 1849 | weekday_indexed() = default; | |
| 1850 | ||
| 1851 | constexpr | |
| 1852 | weekday_indexed(const chrono::weekday& __wd, unsigned __index) noexcept | |
| 1853 | : _M_wd(__wd), _M_index(__index) | |
| 1854 | { } | |
| 1855 | ||
| 1856 | constexpr chrono::weekday | |
| 1857 | weekday() const noexcept | |
| 1858 | { return _M_wd; } | |
| 1859 | ||
| 1860 | constexpr unsigned | |
| 1861 | index() const noexcept | |
| 1862 | { return _M_index; }; | |
| 1863 | ||
| 1864 | constexpr bool | |
| 1865 | ok() const noexcept | |
| 1866 | { return _M_wd.ok() && 1 <= _M_index && _M_index <= 5; } | |
| 1867 | ||
| 1868 | friend constexpr bool | |
| 1869 | operator==(const weekday_indexed& __x, const weekday_indexed& __y) noexcept | |
| 1870 | { return __x.weekday() == __y.weekday() && __x.index() == __y.index(); } | |
| 1871 | ||
| 1872 | friend constexpr month_weekday | |
| 1873 | operator/(const month& __m, const weekday_indexed& __wdi) noexcept; | |
| 1874 | ||
| 1875 | friend constexpr month_weekday | |
| 1876 | operator/(int __m, const weekday_indexed& __wdi) noexcept; | |
| 1877 | ||
| 1878 | friend constexpr month_weekday | |
| 1879 | operator/(const weekday_indexed& __wdi, const month& __m) noexcept; | |
| 1880 | ||
| 1881 | friend constexpr month_weekday | |
| 1882 | operator/(const weekday_indexed& __wdi, int __m) noexcept; | |
| 1883 | ||
| 1884 | friend constexpr year_month_weekday | |
| 1885 | operator/(const year_month& __ym, const weekday_indexed& __wdi) noexcept; | |
| 1886 | ||
| 1887 | // TODO: Implement operator<<. | |
| 1888 | }; | |
| 1889 | ||
| 1890 | constexpr weekday_indexed | |
| 1891 | weekday::operator[](unsigned __index) const noexcept | |
| 1892 | { return {*this, __index}; } | |
| 1893 | ||
| 1894 | // WEEKDAY_LAST | |
| 1895 | ||
| 1896 | class weekday_last | |
| 1897 | { | |
| 1898 | private: | |
| 1899 | chrono::weekday _M_wd; | |
| 1900 | ||
| 1901 | public: | |
| 1902 | explicit constexpr | |
| 1903 | weekday_last(const chrono::weekday& __wd) noexcept | |
| 1904 | : _M_wd{__wd} | |
| 1905 | { } | |
| 1906 | ||
| 1907 | constexpr chrono::weekday | |
| 1908 | weekday() const noexcept | |
| 1909 | { return _M_wd; } | |
| 1910 | ||
| 1911 | constexpr bool | |
| 1912 | ok() const noexcept | |
| 1913 | { return _M_wd.ok(); } | |
| 1914 | ||
| 1915 | friend constexpr bool | |
| 1916 | operator==(const weekday_last& __x, const weekday_last& __y) noexcept | |
| 1917 | { return __x.weekday() == __y.weekday(); } | |
| 1918 | ||
| 1919 | friend constexpr month_weekday_last | |
| 1920 | operator/(int __m, const weekday_last& __wdl) noexcept; | |
| 1921 | ||
| 1922 | friend constexpr month_weekday_last | |
| 1923 | operator/(const weekday_last& __wdl, int __m) noexcept; | |
| 1924 | ||
| 1925 | friend constexpr year_month_weekday_last | |
| 1926 | operator/(const year_month& __ym, const weekday_last& __wdl) noexcept; | |
| 1927 | ||
| 1928 | // TODO: Implement operator<<. | |
| 1929 | }; | |
| 1930 | ||
| 1931 | constexpr weekday_last | |
| 1932 | weekday::operator[](last_spec) const noexcept | |
| 1933 | { return weekday_last{*this}; } | |
| 1934 | ||
| 1935 | // MONTH_DAY | |
| 1936 | ||
| 1937 | class month_day | |
| 1938 | { | |
| 1939 | private: | |
| 1940 | chrono::month _M_m; | |
| 1941 | chrono::day _M_d; | |
| 1942 | ||
| 1943 | public: | |
| 1944 | month_day() = default; | |
| 1945 | ||
| 1946 | constexpr | |
| 1947 | month_day(const chrono::month& __m, const chrono::day& __d) noexcept | |
| 1948 | : _M_m{__m}, _M_d{__d} | |
| 1949 | { } | |
| 1950 | ||
| 1951 | constexpr chrono::month | |
| 1952 | month() const noexcept | |
| 1953 | { return _M_m; } | |
| 1954 | ||
| 1955 | constexpr chrono::day | |
| 1956 | day() const noexcept | |
| 1957 | { return _M_d; } | |
| 1958 | ||
| 1959 | constexpr bool | |
| 1960 | ok() const noexcept | |
| 1961 | { | |
| 1962 | return _M_m.ok() | |
| 1963 | && 1u <= unsigned(_M_d) | |
| 1964 | && unsigned(_M_d) <= __detail::__days_per_month[unsigned(_M_m) - 1]; | |
| 1965 | } | |
| 1966 | ||
| 1967 | friend constexpr bool | |
| 1968 | operator==(const month_day& __x, const month_day& __y) noexcept | |
| 1969 | { return __x.month() == __y.month() && __x.day() == __y.day(); } | |
| 1970 | ||
| 1971 | friend constexpr strong_ordering | |
| 1972 | operator<=>(const month_day& __x, const month_day& __y) noexcept | |
| 1973 | = default; | |
| 1974 | ||
| 1975 | friend constexpr month_day | |
| 1976 | operator/(const chrono::month& __m, const chrono::day& __d) noexcept | |
| 1977 | { return {__m, __d}; } | |
| 1978 | ||
| 1979 | friend constexpr month_day | |
| 1980 | operator/(const chrono::month& __m, int __d) noexcept | |
| 1981 | { return {__m, chrono::day(unsigned(__d))}; } | |
| 1982 | ||
| 1983 | friend constexpr month_day | |
| 1984 | operator/(int __m, const chrono::day& __d) noexcept | |
| 1985 | { return {chrono::month(unsigned(__m)), __d}; } | |
| 1986 | ||
| 1987 | friend constexpr month_day | |
| 1988 | operator/(const chrono::day& __d, const chrono::month& __m) noexcept | |
| 1989 | { return {__m, __d}; } | |
| 1990 | ||
| 1991 | friend constexpr month_day | |
| 1992 | operator/(const chrono::day& __d, int __m) noexcept | |
| 1993 | { return {chrono::month(unsigned(__m)), __d}; } | |
| 1994 | ||
| 1995 | friend constexpr year_month_day | |
| 1996 | operator/(int __y, const month_day& __md) noexcept; | |
| 1997 | ||
| 1998 | friend constexpr year_month_day | |
| 1999 | operator/(const month_day& __md, int __y) noexcept; | |
| 2000 | ||
| 2001 | // TODO: Implement operator<<, from_stream. | |
| 2002 | }; | |
| 2003 | ||
| 2004 | // MONTH_DAY_LAST | |
| 2005 | ||
| 2006 | class month_day_last | |
| 2007 | { | |
| 2008 | private: | |
| 2009 | chrono::month _M_m; | |
| 2010 | ||
| 2011 | public: | |
| 2012 | explicit constexpr | |
| 2013 | month_day_last(const chrono::month& __m) noexcept | |
| 2014 | : _M_m{__m} | |
| 2015 | { } | |
| 2016 | ||
| 2017 | constexpr chrono::month | |
| 2018 | month() const noexcept | |
| 2019 | { return _M_m; } | |
| 2020 | ||
| 2021 | constexpr bool | |
| 2022 | ok() const noexcept | |
| 2023 | { return _M_m.ok(); } | |
| 2024 | ||
| 2025 | friend constexpr bool | |
| 2026 | operator==(const month_day_last& __x, const month_day_last& __y) noexcept | |
| 2027 | { return __x.month() == __y.month(); } | |
| 2028 | ||
| 2029 | friend constexpr strong_ordering | |
| 2030 | operator<=>(const month_day_last& __x, const month_day_last& __y) noexcept | |
| 2031 | = default; | |
| 2032 | ||
| 2033 | friend constexpr month_day_last | |
| 2034 | operator/(const chrono::month& __m, last_spec) noexcept | |
| 2035 | { return month_day_last{__m}; } | |
| 2036 | ||
| 2037 | friend constexpr month_day_last | |
| 2038 | operator/(int __m, last_spec) noexcept | |
| 2039 | { return chrono::month(unsigned(__m)) / last; } | |
| 2040 | ||
| 2041 | friend constexpr month_day_last | |
| 2042 | operator/(last_spec, const chrono::month& __m) noexcept | |
| 2043 | { return __m / last; } | |
| 2044 | ||
| 2045 | friend constexpr month_day_last | |
| 2046 | operator/(last_spec, int __m) noexcept | |
| 2047 | { return __m / last; } | |
| 2048 | ||
| 2049 | friend constexpr year_month_day_last | |
| 2050 | operator/(int __y, const month_day_last& __mdl) noexcept; | |
| 2051 | ||
| 2052 | friend constexpr year_month_day_last | |
| 2053 | operator/(const month_day_last& __mdl, int __y) noexcept; | |
| 2054 | ||
| 2055 | // TODO: Implement operator<<. | |
| 2056 | }; | |
| 2057 | ||
| 2058 | // MONTH_WEEKDAY | |
| 2059 | ||
| 2060 | class month_weekday | |
| 2061 | { | |
| 2062 | private: | |
| 2063 | chrono::month _M_m; | |
| 2064 | chrono::weekday_indexed _M_wdi; | |
| 2065 | ||
| 2066 | public: | |
| 2067 | constexpr | |
| 2068 | month_weekday(const chrono::month& __m, | |
| 2069 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2070 | : _M_m{__m}, _M_wdi{__wdi} | |
| 2071 | { } | |
| 2072 | ||
| 2073 | constexpr chrono::month | |
| 2074 | month() const noexcept | |
| 2075 | { return _M_m; } | |
| 2076 | ||
| 2077 | constexpr chrono::weekday_indexed | |
| 2078 | weekday_indexed() const noexcept | |
| 2079 | { return _M_wdi; } | |
| 2080 | ||
| 2081 | constexpr bool | |
| 2082 | ok() const noexcept | |
| 2083 | { return _M_m.ok() && _M_wdi.ok(); } | |
| 2084 | ||
| 2085 | friend constexpr bool | |
| 2086 | operator==(const month_weekday& __x, const month_weekday& __y) noexcept | |
| 2087 | { | |
| 2088 | return __x.month() == __y.month() | |
| 2089 | && __x.weekday_indexed() == __y.weekday_indexed(); | |
| 2090 | } | |
| 2091 | ||
| 2092 | friend constexpr month_weekday | |
| 2093 | operator/(const chrono::month& __m, | |
| 2094 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2095 | { return {__m, __wdi}; } | |
| 2096 | ||
| 2097 | friend constexpr month_weekday | |
| 2098 | operator/(int __m, const chrono::weekday_indexed& __wdi) noexcept | |
| 2099 | { return chrono::month(unsigned(__m)) / __wdi; } | |
| 2100 | ||
| 2101 | friend constexpr month_weekday | |
| 2102 | operator/(const chrono::weekday_indexed& __wdi, | |
| 2103 | const chrono::month& __m) noexcept | |
| 2104 | { return __m / __wdi; } | |
| 2105 | ||
| 2106 | friend constexpr month_weekday | |
| 2107 | operator/(const chrono::weekday_indexed& __wdi, int __m) noexcept | |
| 2108 | { return __m / __wdi; } | |
| 2109 | ||
| 2110 | friend constexpr year_month_weekday | |
| 2111 | operator/(int __y, const month_weekday& __mwd) noexcept; | |
| 2112 | ||
| 2113 | friend constexpr year_month_weekday | |
| 2114 | operator/(const month_weekday& __mwd, int __y) noexcept; | |
| 2115 | ||
| 2116 | // TODO: Implement operator<<. | |
| 2117 | }; | |
| 2118 | ||
| 2119 | // MONTH_WEEKDAY_LAST | |
| 2120 | ||
| 2121 | class month_weekday_last | |
| 2122 | { | |
| 2123 | private: | |
| 2124 | chrono::month _M_m; | |
| 2125 | chrono::weekday_last _M_wdl; | |
| 2126 | ||
| 2127 | public: | |
| 2128 | constexpr | |
| 2129 | month_weekday_last(const chrono::month& __m, | |
| 2130 | const chrono::weekday_last& __wdl) noexcept | |
| 2131 | :_M_m{__m}, _M_wdl{__wdl} | |
| 2132 | { } | |
| 2133 | ||
| 2134 | constexpr chrono::month | |
| 2135 | month() const noexcept | |
| 2136 | { return _M_m; } | |
| 2137 | ||
| 2138 | constexpr chrono::weekday_last | |
| 2139 | weekday_last() const noexcept | |
| 2140 | { return _M_wdl; } | |
| 2141 | ||
| 2142 | constexpr bool | |
| 2143 | ok() const noexcept | |
| 2144 | { return _M_m.ok() && _M_wdl.ok(); } | |
| 2145 | ||
| 2146 | friend constexpr bool | |
| 2147 | operator==(const month_weekday_last& __x, | |
| 2148 | const month_weekday_last& __y) noexcept | |
| 2149 | { | |
| 2150 | return __x.month() == __y.month() | |
| 2151 | && __x.weekday_last() == __y.weekday_last(); | |
| 2152 | } | |
| 2153 | ||
| 2154 | friend constexpr month_weekday_last | |
| 2155 | operator/(const chrono::month& __m, | |
| 2156 | const chrono::weekday_last& __wdl) noexcept | |
| 2157 | { return {__m, __wdl}; } | |
| 2158 | ||
| 2159 | friend constexpr month_weekday_last | |
| 2160 | operator/(int __m, const chrono::weekday_last& __wdl) noexcept | |
| 2161 | { return chrono::month(unsigned(__m)) / __wdl; } | |
| 2162 | ||
| 2163 | friend constexpr month_weekday_last | |
| 2164 | operator/(const chrono::weekday_last& __wdl, | |
| 2165 | const chrono::month& __m) noexcept | |
| 2166 | { return __m / __wdl; } | |
| 2167 | ||
| 2168 | friend constexpr month_weekday_last | |
| 2169 | operator/(const chrono::weekday_last& __wdl, int __m) noexcept | |
| 2170 | { return chrono::month(unsigned(__m)) / __wdl; } | |
| 2171 | ||
| 2172 | friend constexpr year_month_weekday_last | |
| 2173 | operator/(int __y, const month_weekday_last& __mwdl) noexcept; | |
| 2174 | ||
| 2175 | friend constexpr year_month_weekday_last | |
| 2176 | operator/(const month_weekday_last& __mwdl, int __y) noexcept; | |
| 2177 | ||
| 2178 | // TODO: Implement operator<<. | |
| 2179 | }; | |
| 2180 | ||
| 2181 | // YEAR_MONTH | |
| 2182 | ||
| 7b743c67 PP |
2183 | namespace __detail |
| 2184 | { | |
| 2185 | // [time.cal.ym], [time.cal.ymd], etc constrain the 'months'-based | |
| 2186 | // addition/subtraction operator overloads like so: | |
| 2187 | // | |
| 2188 | // Constraints: if the argument supplied by the caller for the months | |
| 2189 | // parameter is convertible to years, its implicit conversion sequence | |
| 2190 | // to years is worse than its implicit conversion sequence to months. | |
| 2191 | // | |
| 2192 | // We realize this constraint by templatizing the 'months'-based | |
| 2193 | // overloads (using a dummy defaulted template parameter), so that | |
| 2194 | // overload resolution doesn't select the 'months'-based overload unless | |
| 2195 | // the implicit conversion sequence to 'months' is better than that to | |
| 2196 | // 'years'. | |
| 2197 | using __months_years_conversion_disambiguator = void; | |
| 2198 | } | |
| 2199 | ||
| 03d5044b PP |
2200 | class year_month |
| 2201 | { | |
| 2202 | private: | |
| 2203 | chrono::year _M_y; | |
| 2204 | chrono::month _M_m; | |
| 2205 | ||
| 2206 | public: | |
| 2207 | year_month() = default; | |
| 2208 | ||
| 2209 | constexpr | |
| 2210 | year_month(const chrono::year& __y, const chrono::month& __m) noexcept | |
| 2211 | : _M_y{__y}, _M_m{__m} | |
| 2212 | { } | |
| 2213 | ||
| 2214 | constexpr chrono::year | |
| 2215 | year() const noexcept | |
| 2216 | { return _M_y; } | |
| 2217 | ||
| 2218 | constexpr chrono::month | |
| 2219 | month() const noexcept | |
| 2220 | { return _M_m; } | |
| 2221 | ||
| 7b743c67 PP |
2222 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2223 | constexpr year_month& | |
| 2224 | operator+=(const months& __dm) noexcept | |
| 2225 | { | |
| 2226 | *this = *this + __dm; | |
| 2227 | return *this; | |
| 2228 | } | |
| 03d5044b | 2229 | |
| 7b743c67 PP |
2230 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2231 | constexpr year_month& | |
| 2232 | operator-=(const months& __dm) noexcept | |
| 2233 | { | |
| 2234 | *this = *this - __dm; | |
| 2235 | return *this; | |
| 2236 | } | |
| 03d5044b PP |
2237 | |
| 2238 | constexpr year_month& | |
| 2239 | operator+=(const years& __dy) noexcept | |
| 2240 | { | |
| 2241 | *this = *this + __dy; | |
| 2242 | return *this; | |
| 2243 | } | |
| 2244 | ||
| 2245 | constexpr year_month& | |
| 2246 | operator-=(const years& __dy) noexcept | |
| 2247 | { | |
| 2248 | *this = *this - __dy; | |
| 2249 | return *this; | |
| 2250 | } | |
| 2251 | ||
| 2252 | constexpr bool | |
| 2253 | ok() const noexcept | |
| 2254 | { return _M_y.ok() && _M_m.ok(); } | |
| 2255 | ||
| 2256 | friend constexpr bool | |
| 2257 | operator==(const year_month& __x, const year_month& __y) noexcept | |
| 2258 | { return __x.year() == __y.year() && __x.month() == __y.month(); } | |
| 2259 | ||
| 2260 | friend constexpr strong_ordering | |
| 2261 | operator<=>(const year_month& __x, const year_month& __y) noexcept | |
| 2262 | = default; | |
| 2263 | ||
| 7b743c67 PP |
2264 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2265 | friend constexpr year_month | |
| 2266 | operator+(const year_month& __ym, const months& __dm) noexcept | |
| 2267 | { | |
| 2268 | // TODO: Optimize? | |
| 2269 | auto __m = __ym.month() + __dm; | |
| 71e97161 | 2270 | auto __i = int(unsigned(__ym.month())) - 1 + __dm.count(); |
| 7b743c67 PP |
2271 | auto __y = (__i < 0 |
| 2272 | ? __ym.year() + years{(__i - 11) / 12} | |
| 2273 | : __ym.year() + years{__i / 12}); | |
| 2274 | return __y / __m; | |
| 2275 | } | |
| 03d5044b | 2276 | |
| 7b743c67 PP |
2277 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2278 | friend constexpr year_month | |
| 2279 | operator+(const months& __dm, const year_month& __ym) noexcept | |
| 2280 | { return __ym + __dm; } | |
| 03d5044b | 2281 | |
| 7b743c67 PP |
2282 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2283 | friend constexpr year_month | |
| 2284 | operator-(const year_month& __ym, const months& __dm) noexcept | |
| 2285 | { return __ym + -__dm; } | |
| 03d5044b PP |
2286 | |
| 2287 | friend constexpr months | |
| 2288 | operator-(const year_month& __x, const year_month& __y) noexcept | |
| 2289 | { | |
| 2290 | return (__x.year() - __y.year() | |
| 2291 | + months{static_cast<int>(unsigned{__x.month()}) | |
| 2292 | - static_cast<int>(unsigned{__y.month()})}); | |
| 2293 | } | |
| 2294 | ||
| 2295 | friend constexpr year_month | |
| 2296 | operator+(const year_month& __ym, const years& __dy) noexcept | |
| 2297 | { return (__ym.year() + __dy) / __ym.month(); } | |
| 2298 | ||
| 2299 | friend constexpr year_month | |
| 2300 | operator+(const years& __dy, const year_month& __ym) noexcept | |
| 2301 | { return __ym + __dy; } | |
| 2302 | ||
| 2303 | friend constexpr year_month | |
| 2304 | operator-(const year_month& __ym, const years& __dy) noexcept | |
| 2305 | { return __ym + -__dy; } | |
| 2306 | ||
| 2307 | friend constexpr year_month | |
| 2308 | operator/(const chrono::year& __y, const chrono::month& __m) noexcept | |
| 2309 | { return {__y, __m}; } | |
| 2310 | ||
| 2311 | friend constexpr year_month | |
| 2312 | operator/(const chrono::year& __y, int __m) noexcept | |
| 2313 | { return {__y, chrono::month(unsigned(__m))}; } | |
| 2314 | ||
| 2315 | friend constexpr year_month_day | |
| 2316 | operator/(const year_month& __ym, int __d) noexcept; | |
| 2317 | ||
| 2318 | friend constexpr year_month_day_last | |
| 2319 | operator/(const year_month& __ym, last_spec) noexcept; | |
| 2320 | ||
| 2321 | // TODO: Implement operator<<, from_stream. | |
| 2322 | }; | |
| 2323 | ||
| 2324 | // YEAR_MONTH_DAY | |
| 2325 | ||
| 2326 | class year_month_day | |
| 2327 | { | |
| 2328 | private: | |
| 2329 | chrono::year _M_y; | |
| 2330 | chrono::month _M_m; | |
| 2331 | chrono::day _M_d; | |
| 2332 | ||
| 2333 | static constexpr year_month_day _S_from_days(const days& __dp) noexcept; | |
| 2334 | ||
| 2335 | constexpr days _M_days_since_epoch() const noexcept; | |
| 2336 | ||
| 2337 | public: | |
| 2338 | year_month_day() = default; | |
| 2339 | ||
| 2340 | constexpr | |
| 2341 | year_month_day(const chrono::year& __y, const chrono::month& __m, | |
| 2342 | const chrono::day& __d) noexcept | |
| 2343 | : _M_y{__y}, _M_m{__m}, _M_d{__d} | |
| 2344 | { } | |
| 2345 | ||
| 2346 | constexpr | |
| 2347 | year_month_day(const year_month_day_last& __ymdl) noexcept; | |
| 2348 | ||
| 2349 | constexpr | |
| 2350 | year_month_day(const sys_days& __dp) noexcept | |
| 2351 | : year_month_day(_S_from_days(__dp.time_since_epoch())) | |
| 2352 | { } | |
| 2353 | ||
| 2354 | explicit constexpr | |
| 2355 | year_month_day(const local_days& __dp) noexcept | |
| 2356 | : year_month_day(sys_days{__dp.time_since_epoch()}) | |
| 2357 | { } | |
| 2358 | ||
| 7b743c67 PP |
2359 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2360 | constexpr year_month_day& | |
| 2361 | operator+=(const months& __m) noexcept | |
| 2362 | { | |
| 2363 | *this = *this + __m; | |
| 2364 | return *this; | |
| 2365 | } | |
| 03d5044b | 2366 | |
| 7b743c67 PP |
2367 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2368 | constexpr year_month_day& | |
| 2369 | operator-=(const months& __m) noexcept | |
| 2370 | { | |
| 2371 | *this = *this - __m; | |
| 2372 | return *this; | |
| 2373 | } | |
| 03d5044b PP |
2374 | |
| 2375 | constexpr year_month_day& | |
| 2376 | operator+=(const years& __y) noexcept | |
| 2377 | { | |
| 2378 | *this = *this + __y; | |
| 2379 | return *this; | |
| 2380 | } | |
| 2381 | ||
| 2382 | constexpr year_month_day& | |
| 2383 | operator-=(const years& __y) noexcept | |
| 2384 | { | |
| 2385 | *this = *this - __y; | |
| 2386 | return *this; | |
| 2387 | } | |
| 2388 | ||
| 2389 | constexpr chrono::year | |
| 2390 | year() const noexcept | |
| 2391 | { return _M_y; } | |
| 2392 | ||
| 2393 | constexpr chrono::month | |
| 2394 | month() const noexcept | |
| 2395 | { return _M_m; } | |
| 2396 | ||
| 2397 | constexpr chrono::day | |
| 2398 | day() const noexcept | |
| 2399 | { return _M_d; } | |
| 2400 | ||
| 2401 | constexpr | |
| 2402 | operator sys_days() const noexcept | |
| 2403 | { return sys_days{_M_days_since_epoch()}; } | |
| 2404 | ||
| 2405 | explicit constexpr | |
| 2406 | operator local_days() const noexcept | |
| 2407 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2408 | ||
| 2409 | constexpr bool ok() const noexcept; | |
| 2410 | ||
| 2411 | friend constexpr bool | |
| 2412 | operator==(const year_month_day& __x, const year_month_day& __y) noexcept | |
| 2413 | { | |
| 2414 | return __x.year() == __y.year() | |
| 2415 | && __x.month() == __y.month() | |
| 2416 | && __x.day() == __y.day(); | |
| 2417 | } | |
| 2418 | ||
| 2419 | friend constexpr strong_ordering | |
| 2420 | operator<=>(const year_month_day& __x, const year_month_day& __y) noexcept | |
| 2421 | = default; | |
| 2422 | ||
| 7b743c67 PP |
2423 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2424 | friend constexpr year_month_day | |
| 2425 | operator+(const year_month_day& __ymd, const months& __dm) noexcept | |
| 2426 | { return (__ymd.year() / __ymd.month() + __dm) / __ymd.day(); } | |
| 03d5044b | 2427 | |
| 7b743c67 PP |
2428 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2429 | friend constexpr year_month_day | |
| 2430 | operator+(const months& __dm, const year_month_day& __ymd) noexcept | |
| 2431 | { return __ymd + __dm; } | |
| 03d5044b PP |
2432 | |
| 2433 | friend constexpr year_month_day | |
| 2434 | operator+(const year_month_day& __ymd, const years& __dy) noexcept | |
| 2435 | { return (__ymd.year() + __dy) / __ymd.month() / __ymd.day(); } | |
| 2436 | ||
| 2437 | friend constexpr year_month_day | |
| 2438 | operator+(const years& __dy, const year_month_day& __ymd) noexcept | |
| 2439 | { return __ymd + __dy; } | |
| 2440 | ||
| 7b743c67 PP |
2441 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2442 | friend constexpr year_month_day | |
| 2443 | operator-(const year_month_day& __ymd, const months& __dm) noexcept | |
| 2444 | { return __ymd + -__dm; } | |
| 03d5044b PP |
2445 | |
| 2446 | friend constexpr year_month_day | |
| 2447 | operator-(const year_month_day& __ymd, const years& __dy) noexcept | |
| 2448 | { return __ymd + -__dy; } | |
| 2449 | ||
| 2450 | friend constexpr year_month_day | |
| 2451 | operator/(const year_month& __ym, const chrono::day& __d) noexcept | |
| 2452 | { return {__ym.year(), __ym.month(), __d}; } | |
| 2453 | ||
| 2454 | friend constexpr year_month_day | |
| 2455 | operator/(const year_month& __ym, int __d) noexcept | |
| 2456 | { return __ym / chrono::day{unsigned(__d)}; } | |
| 2457 | ||
| 2458 | friend constexpr year_month_day | |
| 2459 | operator/(const chrono::year& __y, const month_day& __md) noexcept | |
| 2460 | { return __y / __md.month() / __md.day(); } | |
| 2461 | ||
| 2462 | friend constexpr year_month_day | |
| 2463 | operator/(int __y, const month_day& __md) noexcept | |
| 2464 | { return chrono::year{__y} / __md; } | |
| 2465 | ||
| 2466 | friend constexpr year_month_day | |
| 2467 | operator/(const month_day& __md, const chrono::year& __y) noexcept | |
| 2468 | { return __y / __md; } | |
| 2469 | ||
| 2470 | friend constexpr year_month_day | |
| 2471 | operator/(const month_day& __md, int __y) noexcept | |
| 2472 | { return chrono::year(__y) / __md; } | |
| 2473 | ||
| 2474 | // TODO: Implement operator<<, from_stream. | |
| 2475 | }; | |
| 2476 | ||
| 3dfd5493 CN |
2477 | // Construct from days since 1970/01/01. |
| 2478 | // Proposition 6.3 of Neri and Schneider, | |
| 2479 | // "Euclidean Affine Functions and Applications to Calendar Algorithms". | |
| 2480 | // https://arxiv.org/abs/2102.06959 | |
| 03d5044b PP |
2481 | constexpr year_month_day |
| 2482 | year_month_day::_S_from_days(const days& __dp) noexcept | |
| 2483 | { | |
| 3dfd5493 CN |
2484 | constexpr auto __z2 = static_cast<uint32_t>(-1468000); |
| 2485 | constexpr auto __r2_e3 = static_cast<uint32_t>(536895458); | |
| 2486 | ||
| a47cec4c | 2487 | const auto __r0 = static_cast<uint32_t>(__dp.count()) + __r2_e3; |
| 3dfd5493 CN |
2488 | |
| 2489 | const auto __n1 = 4 * __r0 + 3; | |
| 2490 | const auto __q1 = __n1 / 146097; | |
| 2491 | const auto __r1 = __n1 % 146097 / 4; | |
| 2492 | ||
| 2493 | constexpr auto __p32 = static_cast<uint64_t>(1) << 32; | |
| 2494 | const auto __n2 = 4 * __r1 + 3; | |
| 2495 | const auto __u2 = static_cast<uint64_t>(2939745) * __n2; | |
| 2496 | const auto __q2 = static_cast<uint32_t>(__u2 / __p32); | |
| 2497 | const auto __r2 = static_cast<uint32_t>(__u2 % __p32) / 2939745 / 4; | |
| 2498 | ||
| 2499 | constexpr auto __p16 = static_cast<uint32_t>(1) << 16; | |
| 2500 | const auto __n3 = 2141 * __r2 + 197913; | |
| 2501 | const auto __q3 = __n3 / __p16; | |
| 2502 | const auto __r3 = __n3 % __p16 / 2141; | |
| 2503 | ||
| 2504 | const auto __y0 = 100 * __q1 + __q2; | |
| 2505 | const auto __m0 = __q3; | |
| 2506 | const auto __d0 = __r3; | |
| 2507 | ||
| 2508 | const auto __j = __r2 >= 306; | |
| 2509 | const auto __y1 = __y0 + __j; | |
| 2510 | const auto __m1 = __j ? __m0 - 12 : __m0; | |
| 2511 | const auto __d1 = __d0 + 1; | |
| 2512 | ||
| 75c74a83 JW |
2513 | return year_month_day{chrono::year{static_cast<int>(__y1 + __z2)}, |
| 2514 | chrono::month{__m1}, chrono::day{__d1}}; | |
| 03d5044b PP |
2515 | } |
| 2516 | ||
| 97d6161f CN |
2517 | // Days since 1970/01/01. |
| 2518 | // Proposition 6.2 of Neri and Schneider, | |
| 2519 | // "Euclidean Affine Functions and Applications to Calendar Algorithms". | |
| 2520 | // https://arxiv.org/abs/2102.06959 | |
| 03d5044b PP |
2521 | constexpr days |
| 2522 | year_month_day::_M_days_since_epoch() const noexcept | |
| 2523 | { | |
| 97d6161f CN |
2524 | auto constexpr __z2 = static_cast<uint32_t>(-1468000); |
| 2525 | auto constexpr __r2_e3 = static_cast<uint32_t>(536895458); | |
| 2526 | ||
| 2527 | const auto __y1 = static_cast<uint32_t>(static_cast<int>(_M_y)) - __z2; | |
| 699672d4 JW |
2528 | const auto __m1 = static_cast<uint32_t>(static_cast<unsigned>(_M_m)); |
| 2529 | const auto __d1 = static_cast<uint32_t>(static_cast<unsigned>(_M_d)); | |
| 97d6161f CN |
2530 | |
| 2531 | const auto __j = static_cast<uint32_t>(__m1 < 3); | |
| 2532 | const auto __y0 = __y1 - __j; | |
| 2533 | const auto __m0 = __j ? __m1 + 12 : __m1; | |
| 2534 | const auto __d0 = __d1 - 1; | |
| 2535 | ||
| 2536 | const auto __q1 = __y0 / 100; | |
| 2537 | const auto __yc = 1461 * __y0 / 4 - __q1 + __q1 / 4; | |
| 2538 | const auto __mc = (979 *__m0 - 2919) / 32; | |
| 2539 | const auto __dc = __d0; | |
| 2540 | ||
| 2541 | return days{static_cast<int32_t>(__yc + __mc + __dc - __r2_e3)}; | |
| 03d5044b PP |
2542 | } |
| 2543 | ||
| 2544 | // YEAR_MONTH_DAY_LAST | |
| 2545 | ||
| 2546 | class year_month_day_last | |
| 2547 | { | |
| 2548 | private: | |
| 2549 | chrono::year _M_y; | |
| 2550 | chrono::month_day_last _M_mdl; | |
| 2551 | ||
| 2552 | public: | |
| 2553 | constexpr | |
| 2554 | year_month_day_last(const chrono::year& __y, | |
| 2555 | const chrono::month_day_last& __mdl) noexcept | |
| 2556 | : _M_y{__y}, _M_mdl{__mdl} | |
| 2557 | { } | |
| 2558 | ||
| 7b743c67 PP |
2559 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2560 | constexpr year_month_day_last& | |
| 2561 | operator+=(const months& __m) noexcept | |
| 2562 | { | |
| 2563 | *this = *this + __m; | |
| 2564 | return *this; | |
| 2565 | } | |
| 03d5044b | 2566 | |
| 7b743c67 PP |
2567 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2568 | constexpr year_month_day_last& | |
| 2569 | operator-=(const months& __m) noexcept | |
| 2570 | { | |
| 2571 | *this = *this - __m; | |
| 2572 | return *this; | |
| 2573 | } | |
| 03d5044b PP |
2574 | |
| 2575 | constexpr year_month_day_last& | |
| 2576 | operator+=(const years& __y) noexcept | |
| 2577 | { | |
| 2578 | *this = *this + __y; | |
| 2579 | return *this; | |
| 2580 | } | |
| 2581 | ||
| 2582 | constexpr year_month_day_last& | |
| 2583 | operator-=(const years& __y) noexcept | |
| 2584 | { | |
| 2585 | *this = *this - __y; | |
| 2586 | return *this; | |
| 2587 | } | |
| 2588 | ||
| 2589 | constexpr chrono::year | |
| 2590 | year() const noexcept | |
| 2591 | { return _M_y; } | |
| 2592 | ||
| 2593 | constexpr chrono::month | |
| 2594 | month() const noexcept | |
| 2595 | { return _M_mdl.month(); } | |
| 2596 | ||
| 2597 | constexpr chrono::month_day_last | |
| 2598 | month_day_last() const noexcept | |
| 2599 | { return _M_mdl; } | |
| 2600 | ||
| 2601 | // Return A day representing the last day of this year, month pair. | |
| 2602 | constexpr chrono::day | |
| 2603 | day() const noexcept | |
| 2604 | { | |
| 8265ab07 CN |
2605 | const auto __m = static_cast<unsigned>(month()); |
| 2606 | ||
| 2607 | // Excluding February, the last day of month __m is either 30 or 31 or, | |
| 2608 | // in another words, it is 30 + b = 30 | b, where b is in {0, 1}. | |
| 2609 | ||
| 2610 | // If __m in {1, 3, 4, 5, 6, 7}, then b is 1 if, and only if __m is odd. | |
| 2611 | // Hence, b = __m & 1 = (__m ^ 0) & 1. | |
| 2612 | ||
| 2613 | // If __m in {8, 9, 10, 11, 12}, then b is 1 if, and only if __m is even. | |
| 2614 | // Hence, b = (__m ^ 1) & 1. | |
| 2615 | ||
| 2616 | // Therefore, b = (__m ^ c) & 1, where c = 0, if __m < 8, or c = 1 if | |
| 2617 | // __m >= 8, that is, c = __m >> 3. | |
| 2618 | ||
| 2619 | // The above mathematically justifies this implementation whose | |
| 2620 | // performance does not depend on look-up tables being on the L1 cache. | |
| 2621 | return chrono::day{__m != 2 ? ((__m ^ (__m >> 3)) & 1) | 30 | |
| 2622 | : _M_y.is_leap() ? 29 : 28}; | |
| 03d5044b PP |
2623 | } |
| 2624 | ||
| 2625 | constexpr | |
| 2626 | operator sys_days() const noexcept | |
| 2627 | { return sys_days{year() / month() / day()}; } | |
| 2628 | ||
| 2629 | explicit constexpr | |
| 2630 | operator local_days() const noexcept | |
| 2631 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2632 | ||
| 2633 | constexpr bool | |
| 2634 | ok() const noexcept | |
| 2635 | { return _M_y.ok() && _M_mdl.ok(); } | |
| 2636 | ||
| 2637 | friend constexpr bool | |
| 2638 | operator==(const year_month_day_last& __x, | |
| 2639 | const year_month_day_last& __y) noexcept | |
| 2640 | { | |
| 2641 | return __x.year() == __y.year() | |
| 2642 | && __x.month_day_last() == __y.month_day_last(); | |
| 2643 | } | |
| 2644 | ||
| 2645 | friend constexpr strong_ordering | |
| 2646 | operator<=>(const year_month_day_last& __x, | |
| 2647 | const year_month_day_last& __y) noexcept | |
| 2648 | = default; | |
| 2649 | ||
| 7b743c67 PP |
2650 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2651 | friend constexpr year_month_day_last | |
| 2652 | operator+(const year_month_day_last& __ymdl, | |
| 2653 | const months& __dm) noexcept | |
| 2654 | { return (__ymdl.year() / __ymdl.month() + __dm) / last; } | |
| 03d5044b | 2655 | |
| 7b743c67 PP |
2656 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2657 | friend constexpr year_month_day_last | |
| 2658 | operator+(const months& __dm, | |
| 2659 | const year_month_day_last& __ymdl) noexcept | |
| 2660 | { return __ymdl + __dm; } | |
| 03d5044b | 2661 | |
| 7b743c67 PP |
2662 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2663 | friend constexpr year_month_day_last | |
| 2664 | operator-(const year_month_day_last& __ymdl, | |
| 2665 | const months& __dm) noexcept | |
| 2666 | { return __ymdl + -__dm; } | |
| 03d5044b PP |
2667 | |
| 2668 | friend constexpr year_month_day_last | |
| 2669 | operator+(const year_month_day_last& __ymdl, | |
| 2670 | const years& __dy) noexcept | |
| 2671 | { return {__ymdl.year() + __dy, __ymdl.month_day_last()}; } | |
| 2672 | ||
| 2673 | friend constexpr year_month_day_last | |
| 2674 | operator+(const years& __dy, | |
| 2675 | const year_month_day_last& __ymdl) noexcept | |
| 2676 | { return __ymdl + __dy; } | |
| 2677 | ||
| 2678 | friend constexpr year_month_day_last | |
| 2679 | operator-(const year_month_day_last& __ymdl, | |
| 2680 | const years& __dy) noexcept | |
| 2681 | { return __ymdl + -__dy; } | |
| 2682 | ||
| 2683 | friend constexpr year_month_day_last | |
| 2684 | operator/(const year_month& __ym, last_spec) noexcept | |
| 2685 | { return {__ym.year(), chrono::month_day_last{__ym.month()}}; } | |
| 2686 | ||
| 2687 | friend constexpr year_month_day_last | |
| 2688 | operator/(const chrono::year& __y, | |
| 2689 | const chrono::month_day_last& __mdl) noexcept | |
| 2690 | { return {__y, __mdl}; } | |
| 2691 | ||
| 2692 | friend constexpr year_month_day_last | |
| 2693 | operator/(int __y, const chrono::month_day_last& __mdl) noexcept | |
| 2694 | { return chrono::year(__y) / __mdl; } | |
| 2695 | ||
| 2696 | friend constexpr year_month_day_last | |
| 2697 | operator/(const chrono::month_day_last& __mdl, | |
| 2698 | const chrono::year& __y) noexcept | |
| 2699 | { return __y / __mdl; } | |
| 2700 | ||
| 2701 | friend constexpr year_month_day_last | |
| 2702 | operator/(const chrono::month_day_last& __mdl, int __y) noexcept | |
| 2703 | { return chrono::year(__y) / __mdl; } | |
| 2704 | ||
| 2705 | // TODO: Implement operator<<. | |
| 2706 | }; | |
| 2707 | ||
| 2708 | // year_month_day ctor from year_month_day_last | |
| 2709 | constexpr | |
| 2710 | year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept | |
| 2711 | : _M_y{__ymdl.year()}, _M_m{__ymdl.month()}, _M_d{__ymdl.day()} | |
| 2712 | { } | |
| 2713 | ||
| 2714 | constexpr bool | |
| 2715 | year_month_day::ok() const noexcept | |
| 2716 | { | |
| 2717 | if (!_M_y.ok() || !_M_m.ok()) | |
| 2718 | return false; | |
| 2719 | return chrono::day{1} <= _M_d && _M_d <= (_M_y / _M_m / last).day(); | |
| 2720 | } | |
| 2721 | ||
| 2722 | // YEAR_MONTH_WEEKDAY | |
| 2723 | ||
| 2724 | class year_month_weekday | |
| 2725 | { | |
| 2726 | private: | |
| 2727 | chrono::year _M_y; | |
| 2728 | chrono::month _M_m; | |
| 2729 | chrono::weekday_indexed _M_wdi; | |
| 2730 | ||
| 2731 | static constexpr year_month_weekday | |
| 2732 | _S_from_sys_days(const sys_days& __dp) | |
| 2733 | { | |
| 2734 | year_month_day __ymd{__dp}; | |
| 2735 | chrono::weekday __wd{__dp}; | |
| 2736 | auto __index = __wd[(unsigned{__ymd.day()} - 1) / 7 + 1]; | |
| 2737 | return {__ymd.year(), __ymd.month(), __index}; | |
| 2738 | } | |
| 2739 | ||
| 2740 | public: | |
| 2741 | year_month_weekday() = default; | |
| 2742 | ||
| 2743 | constexpr | |
| 2744 | year_month_weekday(const chrono::year& __y, const chrono::month& __m, | |
| 2745 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2746 | : _M_y{__y}, _M_m{__m}, _M_wdi{__wdi} | |
| 2747 | { } | |
| 2748 | ||
| 2749 | constexpr | |
| 2750 | year_month_weekday(const sys_days& __dp) noexcept | |
| 2751 | : year_month_weekday{_S_from_sys_days(__dp)} | |
| 2752 | { } | |
| 2753 | ||
| 2754 | explicit constexpr | |
| 2755 | year_month_weekday(const local_days& __dp) noexcept | |
| 2756 | : year_month_weekday{sys_days{__dp.time_since_epoch()}} | |
| 2757 | { } | |
| 2758 | ||
| 7b743c67 PP |
2759 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2760 | constexpr year_month_weekday& | |
| 2761 | operator+=(const months& __m) noexcept | |
| 2762 | { | |
| 2763 | *this = *this + __m; | |
| 2764 | return *this; | |
| 2765 | } | |
| 03d5044b | 2766 | |
| 7b743c67 PP |
2767 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2768 | constexpr year_month_weekday& | |
| 2769 | operator-=(const months& __m) noexcept | |
| 2770 | { | |
| 2771 | *this = *this - __m; | |
| 2772 | return *this; | |
| 2773 | } | |
| 03d5044b PP |
2774 | |
| 2775 | constexpr year_month_weekday& | |
| 2776 | operator+=(const years& __y) noexcept | |
| 2777 | { | |
| 2778 | *this = *this + __y; | |
| 2779 | return *this; | |
| 2780 | } | |
| 2781 | ||
| 2782 | constexpr year_month_weekday& | |
| 2783 | operator-=(const years& __y) noexcept | |
| 2784 | { | |
| 2785 | *this = *this - __y; | |
| 2786 | return *this; | |
| 2787 | } | |
| 2788 | ||
| 2789 | constexpr chrono::year | |
| 2790 | year() const noexcept | |
| 2791 | { return _M_y; } | |
| 2792 | ||
| 2793 | constexpr chrono::month | |
| 2794 | month() const noexcept | |
| 2795 | { return _M_m; } | |
| 2796 | ||
| 2797 | constexpr chrono::weekday | |
| 2798 | weekday() const noexcept | |
| 2799 | { return _M_wdi.weekday(); } | |
| 2800 | ||
| 2801 | constexpr unsigned | |
| 2802 | index() const noexcept | |
| 2803 | { return _M_wdi.index(); } | |
| 2804 | ||
| 2805 | constexpr chrono::weekday_indexed | |
| 2806 | weekday_indexed() const noexcept | |
| 2807 | { return _M_wdi; } | |
| 2808 | ||
| 2809 | constexpr | |
| 2810 | operator sys_days() const noexcept | |
| 2811 | { | |
| 2812 | auto __d = sys_days{year() / month() / 1}; | |
| 8572edc8 PP |
2813 | return __d + (weekday() - chrono::weekday(__d) |
| 2814 | + days{(static_cast<int>(index())-1)*7}); | |
| 03d5044b PP |
2815 | } |
| 2816 | ||
| 2817 | explicit constexpr | |
| 2818 | operator local_days() const noexcept | |
| 2819 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2820 | ||
| 2821 | constexpr bool | |
| 2822 | ok() const noexcept | |
| 2823 | { | |
| 2824 | if (!_M_y.ok() || !_M_m.ok() || !_M_wdi.ok()) | |
| 2825 | return false; | |
| 2826 | if (_M_wdi.index() <= 4) | |
| 2827 | return true; | |
| 2828 | days __d = (_M_wdi.weekday() | |
| 2829 | - chrono::weekday{sys_days{_M_y / _M_m / 1}} | |
| 2830 | + days((_M_wdi.index()-1)*7 + 1)); | |
| 1007170d | 2831 | __glibcxx_assert(__d.count() >= 1); |
| 03d5044b PP |
2832 | return __d.count() <= unsigned{(_M_y / _M_m / last).day()}; |
| 2833 | } | |
| 2834 | ||
| 2835 | friend constexpr bool | |
| 2836 | operator==(const year_month_weekday& __x, | |
| 2837 | const year_month_weekday& __y) noexcept | |
| 2838 | { | |
| 2839 | return __x.year() == __y.year() | |
| 2840 | && __x.month() == __y.month() | |
| 0c5df67f | 2841 | && __x.weekday_indexed() == __y.weekday_indexed(); |
| 03d5044b PP |
2842 | } |
| 2843 | ||
| 7b743c67 PP |
2844 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2845 | friend constexpr year_month_weekday | |
| 2846 | operator+(const year_month_weekday& __ymwd, const months& __dm) noexcept | |
| 2847 | { | |
| 2848 | return ((__ymwd.year() / __ymwd.month() + __dm) | |
| 2849 | / __ymwd.weekday_indexed()); | |
| 2850 | } | |
| 03d5044b | 2851 | |
| 7b743c67 PP |
2852 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2853 | friend constexpr year_month_weekday | |
| 2854 | operator+(const months& __dm, const year_month_weekday& __ymwd) noexcept | |
| 2855 | { return __ymwd + __dm; } | |
| 03d5044b PP |
2856 | |
| 2857 | friend constexpr year_month_weekday | |
| 2858 | operator+(const year_month_weekday& __ymwd, const years& __dy) noexcept | |
| 2859 | { return {__ymwd.year() + __dy, __ymwd.month(), __ymwd.weekday_indexed()}; } | |
| 2860 | ||
| 2861 | friend constexpr year_month_weekday | |
| 2862 | operator+(const years& __dy, const year_month_weekday& __ymwd) noexcept | |
| 2863 | { return __ymwd + __dy; } | |
| 2864 | ||
| 7b743c67 PP |
2865 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2866 | friend constexpr year_month_weekday | |
| 2867 | operator-(const year_month_weekday& __ymwd, const months& __dm) noexcept | |
| 2868 | { return __ymwd + -__dm; } | |
| 03d5044b PP |
2869 | |
| 2870 | friend constexpr year_month_weekday | |
| 2871 | operator-(const year_month_weekday& __ymwd, const years& __dy) noexcept | |
| 2872 | { return __ymwd + -__dy; } | |
| 2873 | ||
| 2874 | friend constexpr year_month_weekday | |
| 2875 | operator/(const year_month& __ym, | |
| 2876 | const chrono::weekday_indexed& __wdi) noexcept | |
| 2877 | { return {__ym.year(), __ym.month(), __wdi}; } | |
| 2878 | ||
| 2879 | friend constexpr year_month_weekday | |
| 2880 | operator/(const chrono::year& __y, const month_weekday& __mwd) noexcept | |
| 2881 | { return {__y, __mwd.month(), __mwd.weekday_indexed()}; } | |
| 2882 | ||
| 2883 | friend constexpr year_month_weekday | |
| 2884 | operator/(int __y, const month_weekday& __mwd) noexcept | |
| 2885 | { return chrono::year(__y) / __mwd; } | |
| 2886 | ||
| 2887 | friend constexpr year_month_weekday | |
| 2888 | operator/(const month_weekday& __mwd, const chrono::year& __y) noexcept | |
| 2889 | { return __y / __mwd; } | |
| 2890 | ||
| 2891 | friend constexpr year_month_weekday | |
| 2892 | operator/(const month_weekday& __mwd, int __y) noexcept | |
| 2893 | { return chrono::year(__y) / __mwd; } | |
| 2894 | ||
| 2895 | // TODO: Implement operator<<. | |
| 2896 | }; | |
| 2897 | ||
| 2898 | // YEAR_MONTH_WEEKDAY_LAST | |
| 2899 | ||
| 2900 | class year_month_weekday_last | |
| 2901 | { | |
| 2902 | private: | |
| 2903 | chrono::year _M_y; | |
| 2904 | chrono::month _M_m; | |
| 2905 | chrono::weekday_last _M_wdl; | |
| 2906 | ||
| 2907 | public: | |
| 2908 | constexpr | |
| 2909 | year_month_weekday_last(const chrono::year& __y, const chrono::month& __m, | |
| 2910 | const chrono::weekday_last& __wdl) noexcept | |
| 2911 | : _M_y{__y}, _M_m{__m}, _M_wdl{__wdl} | |
| 2912 | { } | |
| 2913 | ||
| 7b743c67 PP |
2914 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2915 | constexpr year_month_weekday_last& | |
| 2916 | operator+=(const months& __m) noexcept | |
| 2917 | { | |
| 2918 | *this = *this + __m; | |
| 2919 | return *this; | |
| 2920 | } | |
| 03d5044b | 2921 | |
| 7b743c67 PP |
2922 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2923 | constexpr year_month_weekday_last& | |
| 2924 | operator-=(const months& __m) noexcept | |
| 2925 | { | |
| 2926 | *this = *this - __m; | |
| 2927 | return *this; | |
| 2928 | } | |
| 03d5044b PP |
2929 | |
| 2930 | constexpr year_month_weekday_last& | |
| 2931 | operator+=(const years& __y) noexcept | |
| 2932 | { | |
| 2933 | *this = *this + __y; | |
| 2934 | return *this; | |
| 2935 | } | |
| 2936 | ||
| 2937 | constexpr year_month_weekday_last& | |
| 2938 | operator-=(const years& __y) noexcept | |
| 2939 | { | |
| 2940 | *this = *this - __y; | |
| 2941 | return *this; | |
| 2942 | } | |
| 2943 | ||
| 2944 | constexpr chrono::year | |
| 2945 | year() const noexcept | |
| 2946 | { return _M_y; } | |
| 2947 | ||
| 2948 | constexpr chrono::month | |
| 2949 | month() const noexcept | |
| 2950 | { return _M_m; } | |
| 2951 | ||
| 2952 | constexpr chrono::weekday | |
| 2953 | weekday() const noexcept | |
| 2954 | { return _M_wdl.weekday(); } | |
| 2955 | ||
| 2956 | constexpr chrono::weekday_last | |
| 2957 | weekday_last() const noexcept | |
| 2958 | { return _M_wdl; } | |
| 2959 | ||
| 2960 | constexpr | |
| 2961 | operator sys_days() const noexcept | |
| 2962 | { | |
| 2963 | const auto __d = sys_days{_M_y / _M_m / last}; | |
| 2964 | return sys_days{(__d - (chrono::weekday{__d} | |
| 2965 | - _M_wdl.weekday())).time_since_epoch()}; | |
| 2966 | } | |
| 2967 | ||
| 2968 | explicit constexpr | |
| 2969 | operator local_days() const noexcept | |
| 2970 | { return local_days{sys_days{*this}.time_since_epoch()}; } | |
| 2971 | ||
| 2972 | constexpr bool | |
| 2973 | ok() const noexcept | |
| 2974 | { return _M_y.ok() && _M_m.ok() && _M_wdl.ok(); } | |
| 2975 | ||
| 2976 | friend constexpr bool | |
| 2977 | operator==(const year_month_weekday_last& __x, | |
| 2978 | const year_month_weekday_last& __y) noexcept | |
| 2979 | { | |
| 2980 | return __x.year() == __y.year() | |
| 2981 | && __x.month() == __y.month() | |
| 2982 | && __x.weekday_last() == __y.weekday_last(); | |
| 2983 | } | |
| 2984 | ||
| 7b743c67 PP |
2985 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2986 | friend constexpr year_month_weekday_last | |
| 2987 | operator+(const year_month_weekday_last& __ymwdl, | |
| 2988 | const months& __dm) noexcept | |
| 2989 | { | |
| 2990 | return ((__ymwdl.year() / __ymwdl.month() + __dm) | |
| 2991 | / __ymwdl.weekday_last()); | |
| 2992 | } | |
| 03d5044b | 2993 | |
| 7b743c67 PP |
2994 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 2995 | friend constexpr year_month_weekday_last | |
| 2996 | operator+(const months& __dm, | |
| 2997 | const year_month_weekday_last& __ymwdl) noexcept | |
| 2998 | { return __ymwdl + __dm; } | |
| 03d5044b PP |
2999 | |
| 3000 | friend constexpr year_month_weekday_last | |
| 3001 | operator+(const year_month_weekday_last& __ymwdl, | |
| 3002 | const years& __dy) noexcept | |
| 3003 | { return {__ymwdl.year() + __dy, __ymwdl.month(), __ymwdl.weekday_last()}; } | |
| 3004 | ||
| 3005 | friend constexpr year_month_weekday_last | |
| 3006 | operator+(const years& __dy, | |
| 3007 | const year_month_weekday_last& __ymwdl) noexcept | |
| 3008 | { return __ymwdl + __dy; } | |
| 3009 | ||
| 7b743c67 PP |
3010 | template<typename = __detail::__months_years_conversion_disambiguator> |
| 3011 | friend constexpr year_month_weekday_last | |
| 3012 | operator-(const year_month_weekday_last& __ymwdl, | |
| 3013 | const months& __dm) noexcept | |
| 3014 | { return __ymwdl + -__dm; } | |
| 03d5044b PP |
3015 | |
| 3016 | friend constexpr year_month_weekday_last | |
| 3017 | operator-(const year_month_weekday_last& __ymwdl, | |
| 3018 | const years& __dy) noexcept | |
| 3019 | { return __ymwdl + -__dy; } | |
| 3020 | ||
| 3021 | friend constexpr year_month_weekday_last | |
| 3022 | operator/(const year_month& __ym, | |
| 3023 | const chrono::weekday_last& __wdl) noexcept | |
| 3024 | { return {__ym.year(), __ym.month(), __wdl}; } | |
| 3025 | ||
| 3026 | friend constexpr year_month_weekday_last | |
| 3027 | operator/(const chrono::year& __y, | |
| 3028 | const chrono::month_weekday_last& __mwdl) noexcept | |
| 3029 | { return {__y, __mwdl.month(), __mwdl.weekday_last()}; } | |
| 3030 | ||
| 3031 | friend constexpr year_month_weekday_last | |
| 3032 | operator/(int __y, const chrono::month_weekday_last& __mwdl) noexcept | |
| 3033 | { return chrono::year(__y) / __mwdl; } | |
| 3034 | ||
| 3035 | friend constexpr year_month_weekday_last | |
| 3036 | operator/(const chrono::month_weekday_last& __mwdl, | |
| 3037 | const chrono::year& __y) noexcept | |
| 3038 | { return __y / __mwdl; } | |
| 3039 | ||
| 3040 | friend constexpr year_month_weekday_last | |
| 3041 | operator/(const chrono::month_weekday_last& __mwdl, int __y) noexcept | |
| 3042 | { return chrono::year(__y) / __mwdl; } | |
| 3043 | ||
| 3044 | // TODO: Implement operator<<. | |
| 3045 | }; | |
| 3046 | ||
| 3047 | // HH_MM_SS | |
| 3048 | ||
| 3049 | namespace __detail | |
| 3050 | { | |
| 3051 | consteval long long | |
| 3052 | __pow10(unsigned __n) | |
| 3053 | { | |
| 3054 | long long __r = 1; | |
| 3055 | while (__n-- > 0) | |
| 3056 | __r *= 10; | |
| 3057 | return __r; | |
| 3058 | } | |
| 3059 | } | |
| 3060 | ||
| 3061 | template<typename _Duration> | |
| 3062 | class hh_mm_ss | |
| 3063 | { | |
| 3064 | private: | |
| 3065 | static constexpr int | |
| 3066 | _S_fractional_width() | |
| 3067 | { | |
| 3068 | int __multiplicity_2 = 0; | |
| 3069 | int __multiplicity_5 = 0; | |
| 3070 | auto __den = _Duration::period::den; | |
| 3071 | while ((__den % 2) == 0) | |
| 3072 | { | |
| 3073 | ++__multiplicity_2; | |
| 3074 | __den /= 2; | |
| 3075 | } | |
| 3076 | while ((__den % 5) == 0) | |
| 3077 | { | |
| 3078 | ++__multiplicity_5; | |
| 3079 | __den /= 5; | |
| 3080 | } | |
| 3081 | if (__den != 1) | |
| 3082 | return 6; | |
| 3083 | ||
| 3084 | int __width = (__multiplicity_2 > __multiplicity_5 | |
| 3085 | ? __multiplicity_2 : __multiplicity_5); | |
| 3086 | if (__width > 18) | |
| 3087 | __width = 18; | |
| 3088 | return __width; | |
| 3089 | } | |
| 3090 | ||
| 3091 | public: | |
| 3092 | static constexpr unsigned fractional_width = {_S_fractional_width()}; | |
| 3093 | ||
| 3094 | using precision | |
| 3095 | = duration<common_type_t<typename _Duration::rep, | |
| 3096 | chrono::seconds::rep>, | |
| 3097 | ratio<1, __detail::__pow10(fractional_width)>>; | |
| 3098 | ||
| 3099 | constexpr | |
| 3100 | hh_mm_ss() noexcept | |
| 3101 | : hh_mm_ss{_Duration::zero()} | |
| 3102 | { } | |
| 3103 | ||
| 3104 | constexpr explicit | |
| 3105 | hh_mm_ss(_Duration __d) noexcept | |
| 3106 | : _M_is_neg (__d < _Duration::zero()), | |
| 3107 | _M_h (duration_cast<chrono::hours>(abs(__d))), | |
| 3108 | _M_m (duration_cast<chrono::minutes>(abs(__d) - hours())), | |
| 3109 | _M_s (duration_cast<chrono::seconds>(abs(__d) - hours() - minutes())) | |
| 3110 | { | |
| 3111 | if constexpr (treat_as_floating_point_v<typename precision::rep>) | |
| 3112 | _M_ss = abs(__d) - hours() - minutes() - seconds(); | |
| 3113 | else | |
| 3114 | _M_ss = duration_cast<precision>(abs(__d) - hours() | |
| 3115 | - minutes() - seconds()); | |
| 3116 | } | |
| 3117 | ||
| 3118 | constexpr bool | |
| 3119 | is_negative() const noexcept | |
| 3120 | { return _M_is_neg; } | |
| 3121 | ||
| 3122 | constexpr chrono::hours | |
| 3123 | hours() const noexcept | |
| 3124 | { return _M_h; } | |
| 3125 | ||
| 3126 | constexpr chrono::minutes | |
| 3127 | minutes() const noexcept | |
| 3128 | { return _M_m; } | |
| 3129 | ||
| 3130 | constexpr chrono::seconds | |
| 3131 | seconds() const noexcept | |
| 3132 | { return _M_s; } | |
| 3133 | ||
| 3134 | constexpr precision | |
| 3135 | subseconds() const noexcept | |
| 3136 | { return _M_ss; } | |
| 3137 | ||
| 3138 | constexpr explicit | |
| 3139 | operator precision() const noexcept | |
| 3140 | { return to_duration(); } | |
| 3141 | ||
| 3142 | constexpr precision | |
| 3143 | to_duration() const noexcept | |
| 3144 | { | |
| 3145 | if (_M_is_neg) | |
| 3146 | return -(_M_h + _M_m + _M_s + _M_ss); | |
| 3147 | else | |
| 3148 | return _M_h + _M_m + _M_s + _M_ss; | |
| 3149 | } | |
| 3150 | ||
| 3151 | // TODO: Implement operator<<. | |
| 3152 | ||
| 3153 | private: | |
| 3154 | bool _M_is_neg; | |
| 3155 | chrono::hours _M_h; | |
| 3156 | chrono::minutes _M_m; | |
| 3157 | chrono::seconds _M_s; | |
| 3158 | precision _M_ss; | |
| 3159 | }; | |
| 3160 | #endif // C++20 | |
| 3161 | ||
| f2ce64b5 | 3162 | /// @} group chrono |
| 03d5044b PP |
3163 | } // namespace chrono |
| 3164 | ||
| 3165 | #if __cplusplus > 201103L | |
| 3166 | ||
| 3167 | #define __cpp_lib_chrono_udls 201304 | |
| 3168 | ||
| 3169 | inline namespace literals | |
| 3170 | { | |
| 3171 | /** ISO C++ 2014 namespace for suffixes for duration literals. | |
| 3172 | * | |
| 3173 | * These suffixes can be used to create `chrono::duration` values with | |
| 3174 | * tick periods of hours, minutes, seconds, milliseconds, microseconds | |
| 3175 | * or nanoseconds. For example, `std::chrono::seconds(5)` can be written | |
| 3176 | * as `5s` after making the suffix visible in the current scope. | |
| 3177 | * The suffixes can be made visible by a using-directive or | |
| 3178 | * using-declaration such as: | |
| 3179 | * - `using namespace std::chrono_literals;` | |
| 3180 | * - `using namespace std::literals;` | |
| 3181 | * - `using namespace std::chrono;` | |
| 3182 | * - `using namespace std;` | |
| 3183 | * - `using std::chrono_literals::operator""s;` | |
| 3184 | * | |
| 3185 | * The result of these suffixes on an integer literal is one of the | |
| 3186 | * standard typedefs such as `std::chrono::hours`. | |
| 3187 | * The result on a floating-point literal is a duration type with the | |
| 3188 | * specified tick period and an unspecified floating-point representation, | |
| 3189 | * for example `1.5e2ms` might be equivalent to | |
| 3190 | * `chrono::duration<long double, chrono::milli>(1.5e2)`. | |
| 3191 | * | |
| 3192 | * @ingroup chrono | |
| 3193 | */ | |
| 3194 | inline namespace chrono_literals | |
| 3195 | { | |
| f2ce64b5 JW |
3196 | /// @addtogroup chrono |
| 3197 | /// @{ | |
| 3198 | ||
| 03d5044b PP |
3199 | #pragma GCC diagnostic push |
| 3200 | #pragma GCC diagnostic ignored "-Wliteral-suffix" | |
| 3201 | /// @cond undocumented | |
| 3202 | template<typename _Dur, char... _Digits> | |
| 3203 | constexpr _Dur __check_overflow() | |
| 3204 | { | |
| 3205 | using _Val = __parse_int::_Parse_int<_Digits...>; | |
| 3206 | constexpr typename _Dur::rep __repval = _Val::value; | |
| 3207 | static_assert(__repval >= 0 && __repval == _Val::value, | |
| 3208 | "literal value cannot be represented by duration type"); | |
| 3209 | return _Dur(__repval); | |
| 3210 | } | |
| 3211 | /// @endcond | |
| 3212 | ||
| 3213 | /// Literal suffix for durations representing non-integer hours | |
| 3214 | constexpr chrono::duration<long double, ratio<3600,1>> | |
| 3215 | operator""h(long double __hours) | |
| 3216 | { return chrono::duration<long double, ratio<3600,1>>{__hours}; } | |
| 3217 | ||
| 3218 | /// Literal suffix for durations of type `std::chrono::hours` | |
| 3219 | template <char... _Digits> | |
| 3220 | constexpr chrono::hours | |
| 3221 | operator""h() | |
| 3222 | { return __check_overflow<chrono::hours, _Digits...>(); } | |
| 3223 | ||
| 3224 | /// Literal suffix for durations representing non-integer minutes | |
| 3225 | constexpr chrono::duration<long double, ratio<60,1>> | |
| 3226 | operator""min(long double __mins) | |
| 3227 | { return chrono::duration<long double, ratio<60,1>>{__mins}; } | |
| 3228 | ||
| 3229 | /// Literal suffix for durations of type `std::chrono::minutes` | |
| 3230 | template <char... _Digits> | |
| 3231 | constexpr chrono::minutes | |
| 3232 | operator""min() | |
| 3233 | { return __check_overflow<chrono::minutes, _Digits...>(); } | |
| 3234 | ||
| 3235 | /// Literal suffix for durations representing non-integer seconds | |
| 3236 | constexpr chrono::duration<long double> | |
| 3237 | operator""s(long double __secs) | |
| 3238 | { return chrono::duration<long double>{__secs}; } | |
| 3239 | ||
| 3240 | /// Literal suffix for durations of type `std::chrono::seconds` | |
| 3241 | template <char... _Digits> | |
| 3242 | constexpr chrono::seconds | |
| 3243 | operator""s() | |
| 3244 | { return __check_overflow<chrono::seconds, _Digits...>(); } | |
| 3245 | ||
| 3246 | /// Literal suffix for durations representing non-integer milliseconds | |
| 3247 | constexpr chrono::duration<long double, milli> | |
| 3248 | operator""ms(long double __msecs) | |
| 3249 | { return chrono::duration<long double, milli>{__msecs}; } | |
| 3250 | ||
| 3251 | /// Literal suffix for durations of type `std::chrono::milliseconds` | |
| 3252 | template <char... _Digits> | |
| 3253 | constexpr chrono::milliseconds | |
| 3254 | operator""ms() | |
| 3255 | { return __check_overflow<chrono::milliseconds, _Digits...>(); } | |
| 3256 | ||
| 3257 | /// Literal suffix for durations representing non-integer microseconds | |
| 3258 | constexpr chrono::duration<long double, micro> | |
| 3259 | operator""us(long double __usecs) | |
| 3260 | { return chrono::duration<long double, micro>{__usecs}; } | |
| 3261 | ||
| 3262 | /// Literal suffix for durations of type `std::chrono::microseconds` | |
| 3263 | template <char... _Digits> | |
| 3264 | constexpr chrono::microseconds | |
| 3265 | operator""us() | |
| 3266 | { return __check_overflow<chrono::microseconds, _Digits...>(); } | |
| 3267 | ||
| 3268 | /// Literal suffix for durations representing non-integer nanoseconds | |
| 3269 | constexpr chrono::duration<long double, nano> | |
| 3270 | operator""ns(long double __nsecs) | |
| 3271 | { return chrono::duration<long double, nano>{__nsecs}; } | |
| 3272 | ||
| 3273 | /// Literal suffix for durations of type `std::chrono::nanoseconds` | |
| 3274 | template <char... _Digits> | |
| 3275 | constexpr chrono::nanoseconds | |
| 3276 | operator""ns() | |
| 3277 | { return __check_overflow<chrono::nanoseconds, _Digits...>(); } | |
| 3278 | ||
| 3279 | #if __cplusplus > 201703L | |
| 3280 | constexpr chrono::day | |
| 3281 | operator""d(unsigned long long __d) noexcept | |
| 3282 | { return chrono::day{static_cast<unsigned>(__d)}; } | |
| 3283 | ||
| 3284 | constexpr chrono::year | |
| 3285 | operator""y(unsigned long long __y) noexcept | |
| 3286 | { return chrono::year{static_cast<int>(__y)}; } | |
| 3287 | #endif // C++20 | |
| 3288 | ||
| 3289 | #pragma GCC diagnostic pop | |
| f2ce64b5 | 3290 | /// @} |
| 03d5044b PP |
3291 | } // inline namespace chrono_literals |
| 3292 | } // inline namespace literals | |
| 3293 | ||
| 3294 | namespace chrono | |
| 3295 | { | |
| 3296 | using namespace literals::chrono_literals; | |
| 3297 | } // namespace chrono | |
| 3298 | ||
| 3299 | #if __cplusplus > 201703L | |
| 3300 | namespace chrono | |
| 3301 | { | |
| f2ce64b5 JW |
3302 | /// @addtogroup chrono |
| 3303 | /// @{ | |
| 3304 | ||
| 03d5044b PP |
3305 | // 12/24 HOURS FUNCTIONS |
| 3306 | ||
| 3307 | constexpr bool | |
| 3308 | is_am(const hours& __h) noexcept | |
| 3309 | { return 0h <= __h && __h <= 11h; } | |
| 3310 | ||
| 3311 | constexpr bool | |
| 3312 | is_pm(const hours& __h) noexcept | |
| 3313 | { return 12h <= __h && __h <= 23h; } | |
| 3314 | ||
| 3315 | constexpr hours | |
| 3316 | make12(const hours& __h) noexcept | |
| 3317 | { | |
| 3318 | if (__h == 0h) | |
| 3319 | return 12h; | |
| 3320 | else if (__h > 12h) | |
| 3321 | return __h - 12h; | |
| 3322 | return __h; | |
| 3323 | } | |
| 3324 | ||
| 3325 | constexpr hours | |
| 3326 | make24(const hours& __h, bool __is_pm) noexcept | |
| 3327 | { | |
| 3328 | if (!__is_pm) | |
| 3329 | { | |
| 3330 | if (__h == 12h) | |
| 3331 | return 0h; | |
| 3332 | else | |
| 3333 | return __h; | |
| 3334 | } | |
| 3335 | else | |
| 3336 | { | |
| 3337 | if (__h == 12h) | |
| 3338 | return __h; | |
| 3339 | else | |
| 3340 | return __h + 12h; | |
| 3341 | } | |
| 3342 | } | |
| f2ce64b5 JW |
3343 | /// @} group chrono |
| 3344 | } // namespace chrono | |
| 03d5044b | 3345 | #endif |
| 04f69fda | 3346 | |
| bf1fc37b JW |
3347 | #if __cplusplus >= 201703L |
| 3348 | namespace filesystem | |
| 3349 | { | |
| 3350 | struct __file_clock | |
| 3351 | { | |
| 3352 | using duration = chrono::nanoseconds; | |
| 3353 | using rep = duration::rep; | |
| 3354 | using period = duration::period; | |
| 3355 | using time_point = chrono::time_point<__file_clock>; | |
| 3356 | static constexpr bool is_steady = false; | |
| 3357 | ||
| 3358 | static time_point | |
| 3359 | now() noexcept | |
| 3360 | { return _S_from_sys(chrono::system_clock::now()); } | |
| 3361 | ||
| 3362 | #if __cplusplus > 201703L | |
| 3363 | template<typename _Dur> | |
| 3364 | static | |
| 3365 | chrono::file_time<_Dur> | |
| 3366 | from_sys(const chrono::sys_time<_Dur>& __t) noexcept | |
| 3367 | { return _S_from_sys(__t); } | |
| 3368 | ||
| 3369 | // For internal use only | |
| 3370 | template<typename _Dur> | |
| 3371 | static | |
| 3372 | chrono::sys_time<_Dur> | |
| 3373 | to_sys(const chrono::file_time<_Dur>& __t) noexcept | |
| 3374 | { return _S_to_sys(__t); } | |
| 3375 | #endif // C++20 | |
| 3376 | ||
| 3377 | private: | |
| 3378 | using __sys_clock = chrono::system_clock; | |
| 3379 | ||
| 3380 | // This clock's (unspecified) epoch is 2174-01-01 00:00:00 UTC. | |
| 3381 | // A signed 64-bit duration with nanosecond resolution gives roughly | |
| 3382 | // +/- 292 years, which covers the 1901-2446 date range for ext4. | |
| 3383 | static constexpr chrono::seconds _S_epoch_diff{6437664000}; | |
| 3384 | ||
| 3385 | protected: | |
| 3386 | // For internal use only | |
| 3387 | template<typename _Dur> | |
| 3388 | static | |
| 3389 | chrono::time_point<__file_clock, _Dur> | |
| 3390 | _S_from_sys(const chrono::time_point<__sys_clock, _Dur>& __t) noexcept | |
| 3391 | { | |
| 3392 | using __file_time = chrono::time_point<__file_clock, _Dur>; | |
| 3393 | return __file_time{__t.time_since_epoch()} - _S_epoch_diff; | |
| 3394 | } | |
| 3395 | ||
| 3396 | // For internal use only | |
| 3397 | template<typename _Dur> | |
| 3398 | static | |
| 3399 | chrono::time_point<__sys_clock, _Dur> | |
| 3400 | _S_to_sys(const chrono::time_point<__file_clock, _Dur>& __t) noexcept | |
| 3401 | { | |
| 3402 | using __sys_time = chrono::time_point<__sys_clock, _Dur>; | |
| 3403 | return __sys_time{__t.time_since_epoch()} + _S_epoch_diff; | |
| 3404 | } | |
| 3405 | }; | |
| 3406 | } // namespace filesystem | |
| 3407 | #endif // C++17 | |
| f03858e5 | 3408 | #endif // C++14 |
| 88c4d6b7 | 3409 | |
| 4a15d842 | 3410 | _GLIBCXX_END_NAMESPACE_VERSION |
| 1c9f675f ESR |
3411 | } // namespace std |
| 3412 | ||
| 88c4d6b7 | 3413 | #endif // C++11 |
| 1c9f675f | 3414 | |
| 15e38d0d | 3415 | #endif //_GLIBCXX_CHRONO |