std::chrono::operator+,std::chrono::operator-(std::chrono::day) (3) Linux Manual Page

std::chrono::operator+,std::chrono::operator-(std::chrono::day) – std::chrono::operator+,std::chrono::operator-(std::chrono::day)

Synopsis

constexpr std::chrono::day operator+(const std::chrono::day &d, (1)(since C++ 20)

                                                                    const std::chrono::days &ds) noexcept;

constexpr std::chrono::day operator+(const std::chrono::days &ds, (2)(since C++ 20)

                                                                      const std::chrono::day &d) noexcept;

constexpr std::chrono::day operator-(const std::chrono::day &d, (3)(since C++ 20)

                                                                    const std::chrono::days &ds) noexcept;

constexpr std::chrono::days operator-(const std::chrono::day &x, (4)(since C++ 20)

                                                                     const std::chrono::day &y) noexcept;

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

operator++      increments or decrements the day

operator++(int) (public member function)

operator--

operator--(int)
adds or subtracts a number of days

operator+=      (public member function)

operator-=