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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | STANDARDS | HISTORY | NOTES | SEE ALSO | COLOPHON |
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time_t(3type) time_t(3type)
time_t, suseconds_t, useconds_t - integer time
Standard C library (libc)
#include <time.h>
typedef /* ... */ time_t;
#include <sys/types.h>
typedef /* ... */ suseconds_t;
typedef /* ... */ useconds_t;
time_t Used for time in seconds. According to POSIX, it is an
integer type.
suseconds_t
Used for time in microseconds. It is a signed integer
type capable of storing values at least in the range [-1,
1000000].
useconds_t
Used for time in microseconds. It is an unsigned integer
type capable of storing values at least in the range [0,
1000000].
time_t C11, POSIX.1-2008.
suseconds_t
useconds_t
POSIX.1-2008.
time_t C89, POSIX.1-2001.
suseconds_t
useconds_t
POSIX.1-2001.
<sched.h> defines time_t since POSIX.1-2008.
POSIX.1-2001 defined useconds_t in <unistd.h> too.
On some architectures, the width of time_t can be controlled with
the feature test macro _TIME_BITS. See feature_test_macros(7).
The following headers also provide time_t: <sched.h>,
<sys/msg.h>, <sys/select.h>, <sys/sem.h>, <sys/shm.h>,
<sys/stat.h>, <sys/time.h>, <sys/types.h>, and <utime.h>.
The following headers also provide suseconds_t: <sys/select.h>
and <sys/time.h>.
stime(2), time(2), ctime(3), difftime(3), usleep(3),
timeval(3type)
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
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⟨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
[email protected]
Linux man-pages 6.9.1 2024-05-02 time_t(3type)
Pages that refer to this page: time(2), timespec(3type), timeval(3type), usleep(3), feature_test_macros(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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