std::chrono::year::is_leap (3) - Linux Manuals

std::chrono::year::is_leap: std::chrono::year::is_leap

NAME

std::chrono::year::is_leap - std::chrono::year::is_leap

Synopsis

constexpr bool is_leap() const noexcept; (since C++20)

Determines if *this represents a leap year in the proleptic Gregorian calendar.
*this represents a leap year if the stored year value

* is divisible by 4 and not divisible by 100; or
* is divisible by 400.

Return value

true if *this represents a leap year, otherwise false.