mirror of https://github.com/mkerrisk/man-pages
86 lines
2.6 KiB
Groff
86 lines
2.6 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
|
|
.\"
|
|
.\" Copyright (c) 1993 Michael Haardt
|
|
.\" (michael@moria.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 (faith@cs.unc.edu)
|
|
.\" Modified Sun Oct 18 17:31:43 1998 by Andries Brouwer (aeb@cwi.nl)
|
|
.\"
|
|
.TH FTIME 3 2001-12-14 "Linux" "Linux Programmer's Manual"
|
|
.SH NAME
|
|
ftime \- return date and time
|
|
.SH SYNOPSIS
|
|
.B "#include <sys/timeb.h>"
|
|
.sp
|
|
.BI "int ftime(struct timeb *" tp );
|
|
.SH DESCRIPTION
|
|
Return current date and time in
|
|
.IR tp ,
|
|
which is declared as follows:
|
|
.sp
|
|
.in +1i
|
|
.nf
|
|
struct timeb {
|
|
time_t time;
|
|
unsigned short millitm;
|
|
short timezone;
|
|
short dstflag;
|
|
};
|
|
.fi
|
|
.in -1i
|
|
.LP
|
|
Here \fItime\fP is the number of seconds since the epoch,
|
|
\fImillitm\fP is the number of milliseconds since \fItime\fP
|
|
seconds since the epoch, \fItimezone\fP is the local time zone
|
|
measured in minutes of time west of Greenwich, and \fIdstflag\fP
|
|
is a flag that, if non-zero, indicates that Daylight Saving time
|
|
applies locally during the appropriate part of the year.
|
|
.LP
|
|
These days the contents of the \fItimezone\fP and \fIdstflag\fP
|
|
fields are undefined.
|
|
.SH "RETURN VALUE"
|
|
This function always returns 0.
|
|
.SH BUGS
|
|
This function is obsolete. Don't use it. If the time in seconds
|
|
suffices,
|
|
.BR time (2)
|
|
can be used;
|
|
.BR gettimeofday (2)
|
|
gives microseconds;
|
|
.BR clock_gettime (3)
|
|
gives nanoseconds but is not yet widely available.
|
|
.LP
|
|
Under libc4 and libc5 the \fImillitm\fP field is meaningful.
|
|
But early glibc2 is buggy and returns 0 there;
|
|
glibc 2.1.1 is correct again.
|
|
.SH HISTORY
|
|
The
|
|
.BR ftime ()
|
|
function appeared in 4.2BSD.
|
|
.SH "CONFORMING TO"
|
|
4.2BSD, POSIX 1003.1-2001.
|
|
.SH "SEE ALSO"
|
|
.BR gettimeofday (2),
|
|
.BR time (2)
|