timespec(3type) — Linux manual page

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)

COLOPHON

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
       fetched from
       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
       2024-06-26.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to
       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                timespec(3type)

Pages that refer to this page: itimerspec(3type), timeval(3type), TIMEVAL_TO_TIMESPEC(3)

---