std::chrono::operator+, std::chrono::operator- (std::chrono::year_month_day)

 

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C-style date and time

 

std::chrono::year_month_day

Member functions

year_month_day::year_month_day

year_month_day::operator+=year_month_day::operator-=

year_month_day::yearyear_month_day::monthyear_month_day::day

year_month_day::operator sys_daysyear_month_day::operator local_days

year_month_day::ok

Nonmember functions

operator==operator!=operator<operator<=operator>operator>=

operator+operator-

operator<<

to_stream

from_stream

 

Defined in header <chrono>
constexpr std::chrono::year_month_day operator+(const std::chrono::year_month_day& ymd,                                                 const std::chrono::months& dm) noexcept;		(since C++20)
constexpr std::chrono::year_month_day operator+(const std::chrono::months& dm,                                                 const std::chrono::year_month_day& ymd) noexcept;		(since C++20)
constexpr std::chrono::year_month_day operator+(const std::chrono::year_month_day& ymd,                                                 const std::chrono::years& dy) noexcept;		(since C++20)
constexpr std::chrono::year_month_day operator+(const std::chrono::years& dy,                                                 const std::chrono::year_month_day& ymd) noexcept;		(since C++20)
constexpr std::chrono::year_month_day operator-(const std::chrono::year_month_day& ymd,                                                 const std::chrono::months& dm) noexcept;		(since C++20)
constexpr std::chrono::year_month_day operator-(const std::chrono::year_month_day& ymd,                                                 const std::chrono::years& dy) noexcept;		(since C++20)

1-2) Adds dm.count() months to the date represented by ymd. The result has the same day() as ymd and the same year() and month() as std::chrono::year_month(ymd.year(), ymd.month()) + dm.

3-4) Adds dy.count() years to the date represented by ymd. The result is equivalent to std::chrono::year_month_day(ymd.year() + dy, ymd.month(), ymd.day().

5) Subtracts dm.count() months from the date represented by ymd. Equivalent to ymd + -dm.

6) Subtracts dy.count() years from the date represented by ymd. Equivalent to ymd + -dy.

Notes

Even if ymd.ok() is true, the resulting year_month_day may not represent a valid date if ymd.day() is 29, 30, or 31.