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This function is obsolete.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.
This page is part of release 3.33 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at http://man7.org/linux/man-pages/.
|
Copyright (c) 1993 Michael Haardt (michaelmoria.de) Fri Apr 2 11:32:09 MET DST 1993 This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this manual; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. Modified Sat Jul 24 14:23:14 1993 by Rik Faith (faithcs.unc.edu) Modified Sun Oct 18 17:31:43 1998 by Andries Brouwer (aebcwi.nl) 2008-06-23, mtk, minor rewrites, added some details |