cppdraft_translate/cppdraft/time/duration/nonmember.md

[time.duration.nonmember]

30 Time library [time]

30.5 Class template duration [time.duration]

30.5.6 Non-member arithmetic [time.duration.nonmember]

1

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In the function descriptions that follow, unless stated otherwise, let CD represent the return type of the function.

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template<class Rep1, class Period1, class Rep2, class Period2> constexpr common_type_t<duration<Rep1, Period1>, duration<Rep2, Period2>> operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);

2

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Returns: CD(CD(lhs).count() + CD(rhs).count()).

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template<class Rep1, class Period1, class Rep2, class Period2> constexpr common_type_t<duration<Rep1, Period1>, duration<Rep2, Period2>> operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);

3

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Returns: CD(CD(lhs).count() - CD(rhs).count()).

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template<class Rep1, class Period, class Rep2> constexpr duration<common_type_t<Rep1, Rep2>, Period> operator*(const duration<Rep1, Period>& d, const Rep2& s);

4

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Constraints: is_convertible_v<const Rep2&, common_type_t<Rep1, Rep2>> is true.

5

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Returns: CD(CD(d).count() * s).

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template<class Rep1, class Rep2, class Period> constexpr duration<common_type_t<Rep1, Rep2>, Period> operator*(const Rep1& s, const duration<Rep2, Period>& d);

6

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Constraints: is_convertible_v<const Rep1&, common_type_t<Rep1, Rep2>> is true.

7

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Returns: d * s.

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template<class Rep1, class Period, class Rep2> constexpr duration<common_type_t<Rep1, Rep2>, Period> operator/(const duration<Rep1, Period>& d, const Rep2& s);

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Constraints: is_convertible_v<const Rep2&, common_type_t<Rep1, Rep2>> is true and Rep2 is not a specialization of duration.

9

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Returns: CD(CD(d).count() / s).

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template<class Rep1, class Period1, class Rep2, class Period2> constexpr common_type_t<Rep1, Rep2> operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);

10

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Let CD becommon_type_t<duration<Rep1, Period1>, duration<Rep2, Period2>>.

11

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Returns: CD(lhs).count() / CD(rhs).count().

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template<class Rep1, class Period, class Rep2> constexpr duration<common_type_t<Rep1, Rep2>, Period> operator%(const duration<Rep1, Period>& d, const Rep2& s);

12

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Constraints: is_convertible_v<const Rep2&, common_type_t<Rep1, Rep2>> is true andRep2 is not a specialization of duration.

13

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Returns: CD(CD(d).count() % s).

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template<class Rep1, class Period1, class Rep2, class Period2> constexpr common_type_t<duration<Rep1, Period1>, duration<Rep2, Period2>> operator%(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);

14

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Returns: CD(CD(lhs).count() % CD(rhs).count()).