std::chrono::year::operator+=, std::chrono::year::operator-=
constexpr std::chrono::year& operator+=(const std::chrono::years& y) noexcept; | (1) | (since C++20) |
constexpr std::chrono::year& operator-=(const std::chrono::years& y) noexcept; | (2) | (since C++20) |
Adds or subtracts y.count() years from the year value.
1) Equivalent to
*this = *this + y;
2) Equivalent to
*this = *this - y;
Return value
A reference to this year after modification.
Notes
If the result would be outside the range [-32767, 32767], the actual stored value is unspecified.
Example
See also
| increments or decrements the year (public member function) |
|
performs arithmetic on years (public member function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/chrono/year/operator_arith