20 General utilities library [utilities]

20.11 Time utilities [time]

20.11.5 Class template duration [time.duration]

20.11.5.4 duration special values [time.duration.special]

static constexpr duration zero();

Returns: duration(duration_values<rep>::zero()).

static constexpr duration min();

Returns: duration(duration_values<rep>::min()).

static constexpr duration max();

Returns: duration(duration_values<rep>::max()).