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)