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, Jan­
       uary 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 naļve basis  that
       leap  seconds are ignored and all years divisible by 4 are
       leap years.  This value is not the same as the actual num­
       ber  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)