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FTIME(3)                   Linux Programmer's Manual                  FTIME(3)



NAME
       ftime - return date and time

SYNOPSIS
       #include <sys/timeb.h>

       int ftime(struct timeb *tp);

DESCRIPTION
       This function returns the current time, in seconds and milliseconds since the Epoch
       (00:00:00 UTC, 1 January 1970).  The time is returned in tp, which is  declared  as
       follows:

           struct timeb {
               time_t         time;
               unsigned short millitm;
               short          timezone;
               short          dstflag;
           };

       Here  time  is  the number of seconds since the Epoch, and millitm is the number of
       milliseconds since time seconds since the Epoch.  The timezone field is  the  local
       timezone measured in minutes of time west of Greenwich (with a negative value indi-
       cating minutes east of Greenwich).  The dstflag field is a flag that, if  non-zero,
       indicates  that Daylight Saving time applies locally during the appropriate part of
       the year.

       POSIX.1-2001 says that the contents of the timezone and dstflag fields are unspeci-
       fied; avoid relying on them.

RETURN VALUE
       This  function  always  returns 0.  (POSIX.1-2001 specifies, and some systems docu-
       ment, a -1 error return.)

CONFORMING TO
       4.2BSD, POSIX.1-2001.  POSIX.1-2008 removes the specification of ftime().

       This function is obsolete.  Don't use it.  If the time in seconds suffices, time(2)
       can be used; gettimeofday(2) gives microseconds; clock_gettime(2) gives nanoseconds
       but is not as widely available.

BUGS
       Under libc4 and libc5 the millitm field is meaningful.  But early glibc2  is  buggy
       and returns 0 there; glibc 2.1.1 is correct again.

SEE ALSO
       gettimeofday(2), time(2)

COLOPHON
       This page is part of release 3.22 of the Linux man-pages project.  A description of
       the project, and information about reporting bugs, can be found at  http://www.ker-
       nel.org/doc/man-pages/.



GNU                               2009-03-15                          FTIME(3)

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