Posix_time2.TimespecPOSIX timespec time specifier with seconds and nanoseconds. A normalized value of type t must have a value of tv_nsec between 0 and 1000000000 (exclusive).
val create : int64 -> int64 -> tcreate sec nsec creates a new normalized timespec with sec seconds and nsec nanoseconds.
val to_string : t -> stringto_string t creates a string of the form "sec.nsec".