chromium/third_party/libc++/src/include/__chrono/duration.h

// -*- 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_DURATION_H
#define _LIBCPP___CHRONO_DURATION_H

#include <__compare/ordering.h>
#include <__compare/three_way_comparable.h>
#include <__config>
#include <__type_traits/common_type.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_floating_point.h>
#include <limits>
#include <ratio>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_PUSH_MACROS
#include <__undef_macros>

_LIBCPP_BEGIN_NAMESPACE_STD

namespace chrono {

template <class _Rep, class _Period = ratio<1> >
class _LIBCPP_TEMPLATE_VIS duration;

template <class _Tp>
struct __is_duration : false_type { … };

__is_duration<duration<_Rep, _Period>>;

__is_duration<const duration<_Rep, _Period>>;

__is_duration<volatile duration<_Rep, _Period>>;

__is_duration<const volatile duration<_Rep, _Period>>;

} // namespace chrono

common_type<chrono::duration<_Rep1, _Period1>, chrono::duration<_Rep2, _Period2>>;

namespace chrono {

// duration_cast

template <class _FromDuration,
          class _ToDuration,
          class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type,
          bool          = _Period::num == 1,
          bool          = _Period::den == 1>
struct __duration_cast;

__duration_cast<_FromDuration, _ToDuration, _Period, true, true>;

__duration_cast<_FromDuration, _ToDuration, _Period, true, false>;

__duration_cast<_FromDuration, _ToDuration, _Period, false, true>;

__duration_cast<_FromDuration, _ToDuration, _Period, false, false>;

template <class _ToDuration, class _Rep, class _Period, __enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration duration_cast(const duration<_Rep, _Period>& __fd) { … }

template <class _Rep>
struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> { … };

#if _LIBCPP_STD_VER >= 17
treat_as_floating_point_v;
#endif

template <class _Rep>
struct _LIBCPP_TEMPLATE_VIS duration_values { … };

#if _LIBCPP_STD_VER >= 17
template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration floor(const duration<_Rep, _Period>& __d) { … }

template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration ceil(const duration<_Rep, _Period>& __d) { … }

template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration round(const duration<_Rep, _Period>& __d) { … }
#endif

// duration

template <class _Rep, class _Period>
class _LIBCPP_TEMPLATE_VIS duration { … };

nanoseconds;
microseconds;
milliseconds;
seconds;
minutes;
hours;
#if _LIBCPP_STD_VER >= 20
days;
weeks;
years;
months;
#endif
// Duration ==

template <class _LhsDuration, class _RhsDuration>
struct __duration_eq { … };

__duration_eq<_LhsDuration, _LhsDuration>;

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

#if _LIBCPP_STD_VER <= 17

// Duration !=

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
  return !(__lhs == __rhs);
}

#endif // _LIBCPP_STD_VER <= 17

// Duration <

template <class _LhsDuration, class _RhsDuration>
struct __duration_lt { … };

__duration_lt<_LhsDuration, _LhsDuration>;

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
operator<(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

// Duration >

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
operator>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

// Duration <=

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

// Duration >=

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

#if _LIBCPP_STD_VER >= 20

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
  requires three_way_comparable<common_type_t<_Rep1, _Rep2>>
_LIBCPP_HIDE_FROM_ABI constexpr auto
operator<=>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

#endif // _LIBCPP_STD_VER >= 20

// Duration +

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

// Duration -

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

// Duration *

template <class _Rep1,
          class _Period,
          class _Rep2,
          __enable_if_t<is_convertible<const _Rep2&, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) { … }

template <class _Rep1,
          class _Period,
          class _Rep2,
          __enable_if_t<is_convertible<const _Rep1&, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) { … }

// Duration /

template <class _Rep1,
          class _Period,
          class _Rep2,
          __enable_if_t<!__is_duration<_Rep2>::value &&
                            is_convertible<const _Rep2&, typename common_type<_Rep1, _Rep2>::type>::value,
                        int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) { … }

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<_Rep1, _Rep2>::type
operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

// Duration %

template <class _Rep1,
          class _Period,
          class _Rep2,
          __enable_if_t<!__is_duration<_Rep2>::value &&
                            is_convertible<const _Rep2&, typename common_type<_Rep1, _Rep2>::type>::value,
                        int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) { … }

template <class _Rep1, class _Period1, class _Rep2, class _Period2>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) { … }

} // namespace chrono

#if _LIBCPP_STD_VER >= 14
// Suffixes for duration literals [time.duration.literals]
inline namespace literals {
inline namespace chrono_literals {

_LIBCPP_HIDE_FROM_ABI constexpr chrono::hours operator""h(unsigned long long __h) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, ratio<3600, 1>> operator""h(long double __h) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes operator""min(unsigned long long __m) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, ratio<60, 1>> operator""min(long double __m) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds operator""s(unsigned long long __s) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double> operator""s(long double __s) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::milliseconds operator""ms(unsigned long long __ms) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, milli> operator""ms(long double __ms) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::microseconds operator""us(unsigned long long __us) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, micro> operator""us(long double __us) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::nanoseconds operator""ns(unsigned long long __ns) { … }

_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, nano> operator""ns(long double __ns) { … }

} // namespace chrono_literals
} // namespace literals

namespace chrono { // hoist the literals into namespace std::chrono
usingnamespaceliterals::chrono_literals;
} // namespace chrono

#endif // _LIBCPP_STD_VER >= 14

_LIBCPP_END_NAMESPACE_STD

_LIBCPP_POP_MACROS

#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
#  include <type_traits>
#endif

#endif // _LIBCPP___CHRONO_DURATION_H