timespec

Section: Misc. Reference Manual Pages (3type)
Updated: 2023-02-05
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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.  

STANDARDS

C11 and later; POSIX.1-2001 and later.  

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>.  

SEE ALSO

clock_gettime(2), clock_nanosleep(2), nanosleep(2), timerfd_gettime(2), timer_gettime(2), time_t(3type), timeval(3type)


 

Index

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
STANDARDS
VERSIONS
NOTES
SEE ALSO

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