std::chrono::operator+, std::chrono::operator- (std::chrono::day)
From cppreference.com
constexpr std::chrono::day operator+(const std::chrono::day& d, const std::chrono::days& ds) noexcept; |
(1) | (since C++20) |
constexpr std::chrono::day operator+(const std::chrono::days& ds, const std::chrono::day& d) noexcept; |
(2) | (since C++20) |
constexpr std::chrono::day operator-(const std::chrono::day& d, const std::chrono::days& ds) noexcept; |
(3) | (since C++20) |
constexpr std::chrono::days operator-(const std::chrono::day& x, const std::chrono::day& y) noexcept; |
(4) | (since C++20) |
1-2) Adds ds.count() days to
d
.3) Subtracts ds.count() days from
d
.4) Calculate the difference, in days, between two
day
x
and y
.Return value
1-2) std::chrono::day(unsigned(d) + ds.count())
3) std::chrono::day(unsigned(d) - ds.count())
4) std::chrono::days(int(unsigned(x)) - int(unsigned(y)))
Notes
For (1-3), if the result would be outside the range [0, 255], the actual stored value is unspecified.
Example
This section is incomplete Reason: no example |
See also
increments or decrements the day (public member function) | |
adds or subtracts a number of days (public member function) |