FTIME(3)



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 as seconds and milliseconds
       since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).  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  time-
       zone  field  is  the local timezone measured in minutes of time west of
       Greenwich (with a negative value indicating minutes east of Greenwich).
       The  dstflag  field is a flag that, if nonzero, 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 unspecified; avoid relying on them.

RETURN VALUE
       This function always returns 0.  (POSIX.1-2001 specifies, and some sys-
       tems document, a -1 error return.)

ATTRIBUTES
       For  an  explanation  of  the  terms  used   in   this   section,   see
       attributes(7).

       +----------+---------------+---------+
       |Interface | Attribute     | Value   |
       +----------+---------------+---------+
       |ftime()   | Thread safety | MT-Safe |
       +----------+---------------+---------+
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       This function is obsolete.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  suf-
       fices,   time(2)  can  be  used;  gettimeofday(2)  gives  microseconds;
       clock_gettime(2) gives nanoseconds but is not as widely available.

BUGS
       Early glibc2 is buggy and returns 0 in the millitm field;  glibc  2.1.1
       is correct again.

SEE ALSO
       gettimeofday(2), time(2)

COLOPHON
       This  page  is  part of release 4.06 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.

GNU                               2015-03-02                          FTIME(3)

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