time

TIME(2)                    Linux Programmer's Manual                   TIME(2)



NAME
       time - get time in seconds

SYNOPSIS
       #include <time.h>

       time_t time(time_t *t);

DESCRIPTION
       time returns the time since the Epoch (00:00:00 UTC, January 1, 1970),
       measured in seconds.

       If t is non-NULL, the return value is also stored in the memory pointed
       to by t.

RETURN VALUE
       On success, the value of time in seconds since the Epoch is returned.
       On error, ((time_t)-1) is returned, and errno is set appropriately.

ERRORS
       EFAULT t points outside your accessible address space.

NOTES
       POSIX.1 defines seconds since the Epoch as a value to be interpreted as
       the number of seconds between a specified time and the Epoch, according
       to a formula for conversion from UTC equivalent to conversion on the
       naïve basis that leap seconds are ignored and all years divisible by 4
       are leap years.  This value is not the same as the actual number of
       seconds between the time and the Epoch, because of leap seconds and
       because clocks are not required to be synchronised to a standard
       reference.  The intention is that the interpretation of seconds since
       the Epoch values be consistent; see POSIX.1 Annex B 2.2.2 for further
       rationale.

CONFORMING TO
       SVr4, SVID, POSIX, X/OPEN, BSD 4.3
       Under BSD 4.3, this call is obsoleted by gettimeofday(2).  POSIX does
       not specify any error conditions.

SEE ALSO
       ctime(3), date(1), ftime(3), gettimeofday(2)



Linux 2.0.30                      1997-09-09                           TIME(2)