timespec(3type) timespec(3type)
NAME
timespec - time in seconds and nanoseconds
LIBRARY
Standard C library (libc)
SYNOPSIS
#include <time.h>
struct timespec {
time_t tv_sec; /* Seconds */
/* ... */ tv_nsec; /* Nanoseconds [0, 999'999'999] */
};
DESCRIPTION
Describes times in seconds and nanoseconds.
tv_nsec is of an implementation-defined signed type capable of holding
the specified range. Under glibc, this is usually long, and long long
on X32. It can be safely down-cast to any concrete 32-bit integer type
for processing.
VERSIONS
Prior to C23, tv_nsec was long.
STANDARDS
C11, POSIX.1-2008.
HISTORY
POSIX.1-2001.
NOTES
The following headers also provide this type: <aio.h>, <mqueue.h>,
<sched.h>, <signal.h>, <sys/select.h>, and <sys/stat.h>.
SEE ALSO
clock_gettime(2), clock_nanosleep(2), nanosleep(2), timerfd_gettime(2),
timer_gettime(2), time_t(3type), timeval(3type)
Linux man-pages 6.7 2023-10-31 timespec(3type)
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