timespec(3type) - Linux manual page (original) (raw)

timespec(3type) timespec(3type)

NAME top

   timespec - time in seconds and nanoseconds

LIBRARY top

   Standard C library (_libc_)

SYNOPSIS top

   **#include <time.h>**

   **struct timespec {**
       **time_t     tv_sec;** /* Seconds */
       /* ... */  **tv_nsec;** /* Nanoseconds [**0**, **999'999'999**] */
   **};**

DESCRIPTION top

   Describes times in seconds and nanoseconds.

   _tvnsec_ 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 top

   Prior to C23, _tvnsec_ was _long_.

STANDARDS top

   C11, POSIX.1-2008.

HISTORY top

   POSIX.1-2001.

NOTES top

   The following headers also provide this type: _<aio.h>_, _<mqueue.h>_,
   _<sched.h>_, _<signal.h>_, _<sys/select.h>_, and _<sys/stat.h>_.

SEE ALSO top

   [clock_gettime(2)](../man2/clock%5Fgettime.2.html), [clock_nanosleep(2)](../man2/clock%5Fnanosleep.2.html), [nanosleep(2)](../man2/nanosleep.2.html),
   [timerfd_gettime(2)](../man2/timerfd%5Fgettime.2.html), [timer_gettime(2)](../man2/timer%5Fgettime.2.html), [time_t(3type)](../man3/time%5Ft.3type.html),
   [timeval(3type)](../man3/timeval.3type.html)

COLOPHON top

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Linux man-pages 6.10 2024-05-02 timespec(3type)

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