| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___CHRONO_HH_MM_SS_H |
| #define _LIBCPP___CHRONO_HH_MM_SS_H |
| |
| #include <__chrono/duration.h> |
| #include <__chrono/time_point.h> |
| #include <__config> |
| #include <ratio> |
| #include <type_traits> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #if _LIBCPP_STD_VER > 17 |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| namespace chrono |
| { |
| |
| template <class _Duration> |
| class hh_mm_ss |
| { |
| private: |
| static_assert(__is_duration<_Duration>::value, "template parameter of hh_mm_ss must be a std::chrono::duration"); |
| using __CommonType = common_type_t<_Duration, chrono::seconds>; |
| |
| _LIBCPP_HIDE_FROM_ABI static constexpr uint64_t __pow10(unsigned __exp) |
| { |
| uint64_t __ret = 1; |
| for (unsigned __i = 0; __i < __exp; ++__i) |
| __ret *= 10U; |
| return __ret; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI static constexpr unsigned __width(uint64_t __n, uint64_t __d = 10, unsigned __w = 0) |
| { |
| if (__n >= 2 && __d != 0 && __w < 19) |
| return 1 + __width(__n, __d % __n * 10, __w+1); |
| return 0; |
| } |
| |
| public: |
| _LIBCPP_HIDE_FROM_ABI static unsigned constexpr fractional_width = __width(__CommonType::period::den) < 19 ? |
| __width(__CommonType::period::den) : 6u; |
| using precision = duration<typename __CommonType::rep, ratio<1, __pow10(fractional_width)>>; |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr hh_mm_ss() noexcept : hh_mm_ss{_Duration::zero()} {} |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit hh_mm_ss(_Duration __d) noexcept : |
| __is_neg(__d < _Duration(0)), |
| __h(duration_cast<chrono::hours> (abs(__d))), |
| __m(duration_cast<chrono::minutes>(abs(__d) - hours())), |
| __s(duration_cast<chrono::seconds>(abs(__d) - hours() - minutes())), |
| __f(duration_cast<precision> (abs(__d) - hours() - minutes() - seconds())) |
| {} |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr bool is_negative() const noexcept { return __is_neg; } |
| _LIBCPP_HIDE_FROM_ABI constexpr chrono::hours hours() const noexcept { return __h; } |
| _LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes minutes() const noexcept { return __m; } |
| _LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds seconds() const noexcept { return __s; } |
| _LIBCPP_HIDE_FROM_ABI constexpr precision subseconds() const noexcept { return __f; } |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr precision to_duration() const noexcept |
| { |
| auto __dur = __h + __m + __s + __f; |
| return __is_neg ? -__dur : __dur; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit operator precision() const noexcept { return to_duration(); } |
| |
| private: |
| bool __is_neg; |
| chrono::hours __h; |
| chrono::minutes __m; |
| chrono::seconds __s; |
| precision __f; |
| }; |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr bool is_am(const hours& __h) noexcept { return __h >= hours( 0) && __h < hours(12); } |
| _LIBCPP_HIDE_FROM_ABI constexpr bool is_pm(const hours& __h) noexcept { return __h >= hours(12) && __h < hours(24); } |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr hours make12(const hours& __h) noexcept |
| { |
| if (__h == hours( 0)) return hours(12); |
| else if (__h <= hours(12)) return __h; |
| else return __h - hours(12); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr hours make24(const hours& __h, bool __is_pm) noexcept |
| { |
| if (__is_pm) |
| return __h == hours(12) ? __h : __h + hours(12); |
| else |
| return __h == hours(12) ? hours(0) : __h; |
| } |
| } // namespace chrono |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_STD_VER > 17 |
| |
| #endif // _LIBCPP___CHRONO_HH_MM_SS_H |