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11.36 `srfi.174` - POSIX timespecs

Module: srfi.174

Function: timespec secs nsecs

[SRFI-174]{srfi.174} Creates and returns a timespec, whose second part is secs and nanosecond part is nsecs. The second part must be an exact integer; if it is positive, it’s the number of seconds since Epoch (Jan 1, 1970 UTC), and if it’s negative, it’s before the Epoch. The nanosecond part is a nonnegative integer less than 1e9, and represents the fraction of seconds in nanosecond resolution. Note that if the second part is negative, the nanosecond part counts toward past.

This is the same as `(make-time time-utc nsecs secs)` of SRFI-19. Note the order of arguments.

Function: timespec? obj

[SRFI-174]{srfi.174} Returns `#t` iff obj is a `<time>` object. It doesn’t check the type of time.

Function: timespec-seconds ts
Function: timespec-nanosecods ts

[SRFI-174]{srfi.174} Returns second and nanosecond part of the `<time>` object. Same as `time-second` and `time-nanosecond` of SRFI-19 (note that we use plurals in this srfi).

Function: inexact->timespec v

[SRFI-174]{srfi.174} Convert an inexact real number v to a timespec. The integral part of v is the seconds after (when v is positive) or before (when v is negative) the Epoch, and the fractional part is rounded into nanosecond resolution.

Function: timespec->inexact ts

[SRFI-174] Convert a timespec into an inexact real number in seconds. {srfi.174}

Function: timespec=? ts1 ts2

[SRFI-174]{srfi.174} Returns `#t` iff two timespecs are the same. It is the same as `time=?` in SRFI-19.

Function: timespec<? ts1 ts2

[SRFI-174]{srfi.174} Returns `#t` iff a timespec ts1 is strictly before the timespec ts2. It is the same as `time<?` in SRFI-19.

Function: timespec-hash ts

[SRFI-174]{srfi.174} Compute a hash value of a timespec ts. It is same as passing a `<time>` object to `default-hash`, and affected by the current hash salt value (see ハッシュ).

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