| NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | BUGS | SEE ALSO | COLOPHON | The Linux Programming Interface |
FTIME(3) Linux Programmer's Manual FTIME(3)
ftime - return date and time
#include <sys/timeb.h>
int ftime(struct timeb *tp);
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 timezone 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.
This function always returns 0. (POSIX.1-2001 specifies, and some systems
document, a -1 error return.)
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This function is obsolete.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.
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.
gettimeofday(2), time(2)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
GNU 2010-02-25 FTIME(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface