gettimeofday(3C-ucb)    (BSD Compatibility Package)    gettimeofday(3C-ucb)

NAME
     gettimeofday, settimeofday - get or set the date and time

SYNOPSIS
     /usr/ucb/cc [flag ...] file ... -lucb

     #include <sys/time.h>

     int gettimeofday(tp, tzp)
     struct timeval *tp;
     struct timezone *tzp;      /* obsolete */

     int settimeofday(tp, tzp)
     struct timeval *tp;
     struct timezone *tzp;      /* obsolete */

DESCRIPTION
     The system's notion of the current Greenwich time is obtained with the
     gettimeofday call, and set with the settimeofday call. The current
     time is expressed in elapsed seconds and microseconds since 00:00 GMT,
     January 1, 1970 (zero hour). The resolution of the system clock is
     hardware dependent; the time may be updated continuously, or in ticks.

     tp points to a timeval structure, which includes the following
     members:

          long    tvsec;     /* seconds since Jan. 1, 1970 */
          long    tvusec;    /* and microseconds */

     If tp is a NULL pointer, the current time information is not returned
     or set.

     tzp is an obsolete pointer formerly used to get and set timezone
     information. tzp is now ignored. Timezone information is now handled
     using the TZ environment variable [see timezone(4)].

     Only the privileged user may set the time of day.

RETURN VALUE
     A -1 return value indicates an error occurred; in this case an error
     code is stored in the global variable errno.

DIAGNOSTICS
     The following error codes may be set in errno:

     EINVAL   tp specifies an invalid time.

     EPERM    A user other than the privileged user attempted to set the
              time.






Page 1                       Reliant UNIX 5.44                Printed 11/98

gettimeofday(3C-ucb)    (BSD Compatibility Package)    gettimeofday(3C-ucb)

NOTES
     Time is never correct enough to believe the microsecond values.

     tzp is ignored.

SEE ALSO
     date(1), adjtime(2), ctime(3C), gettimeofday(3C), timezone(4).















































Page 2                       Reliant UNIX 5.44                Printed 11/98