FTIME(3P) POSIX Programmer's Manual FTIME(3P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAMEftime - get date and time (LEGACY)
SYNOPSIS
#include <sys/timeb.h>
int ftime(struct timeb *tp);
DESCRIPTION
The ftime() function shall set the time and millitm members of the
timeb structure pointed to by tp to contain the seconds and millisec‐
onds 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 (particularly a granularity of one) renders code non-
portable.
RETURN VALUE
Upon successful completion, the ftime() function shall return 0; other‐
wise, -1 shall be returned.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
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 values for time and millitm.
#include <sys/timeb.h>
struct timeb tp;
int status;
...
status = ftime(&tp);
APPLICATION USAGE
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().
RATIONALE
None.
FUTURE DIRECTIONS
This function may be withdrawn in a future version.
SEE ALSOclock_getres(), ctime(), gettimeofday(), time(), the Base Definitions
volume of IEEE Std 1003.1-2001, <sys/timeb.h>
COPYRIGHT
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 original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 FTIME(3P)
