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https://github.com/jart/cosmopolitan.git
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99 lines
3 KiB
C++
99 lines
3 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___CHRONO_DAY_H
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#define _LIBCPP___CHRONO_DAY_H
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#include <__chrono/duration.h>
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#include <__config>
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#include <compare>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace chrono {
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class day {
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private:
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unsigned char __d_;
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public:
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day() = default;
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_LIBCPP_HIDE_FROM_ABI explicit inline constexpr day(unsigned __val) noexcept
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: __d_(static_cast<unsigned char>(__val)) {}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day& operator++() noexcept {
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++__d_;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day operator++(int) noexcept {
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day __tmp = *this;
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++(*this);
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return __tmp;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day& operator--() noexcept {
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--__d_;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day operator--(int) noexcept {
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day __tmp = *this;
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--(*this);
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return __tmp;
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}
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_LIBCPP_HIDE_FROM_ABI constexpr day& operator+=(const days& __dd) noexcept;
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_LIBCPP_HIDE_FROM_ABI constexpr day& operator-=(const days& __dd) noexcept;
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_LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __d_; }
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_LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __d_ >= 1 && __d_ <= 31; }
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};
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_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const day& __lhs, const day& __rhs) noexcept {
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return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs);
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering operator<=>(const day& __lhs, const day& __rhs) noexcept {
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return static_cast<unsigned>(__lhs) <=> static_cast<unsigned>(__rhs);
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day operator+(const day& __lhs, const days& __rhs) noexcept {
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return day(static_cast<unsigned>(__lhs) + __rhs.count());
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day operator+(const days& __lhs, const day& __rhs) noexcept {
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return __rhs + __lhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day operator-(const day& __lhs, const days& __rhs) noexcept {
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return __lhs + -__rhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr days operator-(const day& __lhs, const day& __rhs) noexcept {
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return days(static_cast<int>(static_cast<unsigned>(__lhs)) - static_cast<int>(static_cast<unsigned>(__rhs)));
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day& day::operator+=(const days& __dd) noexcept {
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*this = *this + __dd;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr day& day::operator-=(const days& __dd) noexcept {
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*this = *this - __dd;
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return *this;
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}
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} // namespace chrono
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 20
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#endif // _LIBCPP___CHRONO_DAY_H
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