std::chrono::year::operator+, std::chrono::year::operator-

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< cpplrm; | chronolrm; | year
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C-style date and time
constexpr std::chrono::year operator+() noexcept;
(1) (since C++20)
constexpr std::chrono::year operator-() noexcept;
(2) (since C++20)

Applies the unary operators to the year value.

1) Returns a copy of *this.
2) Returns a year whose year value is the negation of that of *this.

Return value

1) *this
2) std::chrono::year(-int(*this))

Example