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.


If the result would be outside the range [-32767, 32767], the actual stored value is unspecified.


See also

increments or decrements the year
(public member function)
performs arithmetic on years
(public member function)

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