Mtime.Span
type t = span
val zero : span
val one : span
val min_span : span
val max_span : span
val ns : span
val us : span
val ms : span
val s : span
val min : span
val hour : span
val day : span
val year : span
val to_uint64_ns : span -> int64
val of_uint64_ns : int64 -> span
val of_float_ns : float -> span option
val to_float_ns : span -> float
val pp : Format.formatter -> span -> unit
val dump : Format.formatter -> t -> unit
val unsafe_of_uint64_ns_option : int64 option -> t option