TIMESPEC_GET(3) Library Functions Manual TIMESPEC_GET(3)

timespec_getget current calendar time

Standard C Library (libc, -lc)

#include <time.h>

int
timespec_get(struct timespec *ts, int base);

The timespec_get function sets the interval pointed to by ts to hold the current calendar time based on the specified time base in base.

The base TIME_UTC returns the time since the epoch. This time is expressed in seconds and nanoseconds since midnight (0 hour), January 1, 1970. This corresponds to CLOCK_REALTIME.

The timespec_get function returns the passed value of base if successful, otherwise 0 on failure.

gettimeofday(2), clock_gettime(2), time(3)

The timespec_get function with a base of TIME_UTC conforms to ISO/IEC 9899:2011 (“ISO C11”).

Kamil Rytarowski <kamil@NetBSD.org>
Warner Losh <imp@FreeBSD.org>

August 26, 2018 macOS 15.2