+++ /dev/null
-.\" Copyright (c) 1990, 1991, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Chris Torek and the American National Standards Committee X3,
-.\" on Information Processing Systems.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)fflush.3 8.1 (Berkeley) 6/4/93
-.\" $FreeBSD: src/lib/libc/stdio/fflush.3,v 1.8 2001/10/01 16:08:59 ru Exp $
-.\"
-.Dd June 4, 1993
-.Dt FFLUSH 3
-.Os
-.Sh NAME
-.Nm fflush ,
-.Nm fpurge
-.Nd flush a stream
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In stdio.h
-.Ft int
-.Fn fflush "FILE *stream"
-.Ft int
-.Fn fpurge "FILE *stream"
-.Sh DESCRIPTION
-The function
-.Fn fflush
-forces a write of all buffered data for the given output or update
-.Fa stream
-via the stream's underlying write function.
-The open status of the stream is unaffected.
-.Pp
-If the
-.Fa stream
-argument is
-.Dv NULL ,
-.Fn fflush
-flushes
-.Em all
-open output streams.
-.Pp
-The function
-.Fn fpurge
-erases any input or output buffered in the given
-.Fa stream .
-For output streams this discards any unwritten output.
-For input streams this discards any input read from the underlying object
-but not yet obtained via
-.Xr getc 3 ;
-this includes any text pushed back via
-.Xr ungetc .
-.Sh RETURN VALUES
-Upon successful completion 0 is returned.
-Otherwise,
-.Dv EOF
-is returned and the global variable
-.Va errno
-is set to indicate the error.
-.Sh ERRORS
-.Bl -tag -width Er
-.It Bq Er EBADF
-.Fa Stream
-is not an open stream, or, in the case of
-.Fn fflush ,
-not a stream open for writing.
-.El
-.Pp
-The function
-.Fn fflush
-may also fail and set
-.Va errno
-for any of the errors specified for the routine
-.Xr write 2 .
-.Sh SEE ALSO
-.Xr write 2 ,
-.Xr fclose 3 ,
-.Xr fopen 3 ,
-.Xr setbuf 3
-.Sh STANDARDS
-The
-.Fn fflush
-function
-conforms to
-.St -isoC .
projects / apple / libc.git / blobdiff