val of_seconds : float -> tval of_milliseconds : int32 -> tval of_microseconds : int64 -> tval asSeconds : t -> floatval asMilliseconds : t -> int32val asMicroseconds : t -> int64val mul : t -> float -> tval div : t -> float -> tval ratio : t -> t -> floatval (*) : t -> float -> tval (/) : t -> float -> tval (//) : t -> t -> floatval compare : t -> t -> int