FTIME(P) POSIX Programmer's Manual FTIME(P)
ftime - get date and time (LEGACY)
int ftime(struct timeb *tp);
The ftime() function shall set the time and millitm members of the timeb structure pointed
to by tp to contain the seconds and milliseconds portions, respectively, of the current
time in seconds since the Epoch. The contents of the timezone and dstflag members of tp
after a call to ftime() are unspecified.
The system clock need not have millisecond granularity. Depending on any granularity (par-
ticularly a granularity of one) renders code non-portable.
Upon successful completion, the ftime() function shall return 0; otherwise, -1 shall be
No errors are defined.
The following sections are informative.
Getting the Current Time and Date
The following example shows how to get the current system time values using the ftime()
function. The timeb structure pointed to by tp is filled with the current system time val-
ues for time and millitm.
struct timeb tp;
status = ftime(&tp);
For applications portability, the time() function should be used to determine the current
time instead of ftime(). Realtime applications should use clock_gettime() to determine the
current time instead of ftime().
This function may be withdrawn in a future version.
clock_getres() , ctime() , gettimeofday() , time() , the Base Definitions volume of
IEEE Std 1003.1-2001, <sys/timeb.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and The Open Group
Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 FTIME(P)