timespec3type
Time in seconds and nanoseconds
Usage
#include <time.h>
struct timespec { time_t tv_sec; /* Seconds */ /* ... */ tv_nsec; /* Nanoseconds [0, 999'999'999] */ };
Library
Standard C library (libc)
Overview
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.
Notes
The following headers also provide this type: <aio.h>, <mqueue.h>, <sched.h>, <signal.h>, <sys/select.h>, and <sys/stat.h>.
Releases
3 releases since Debian 12 (Bookworm); the text changed 2 times.