STDIO_EXT(3)

NAME
stdio_ext, __fbufsize, __fpending, __flbf, __freadable, __fwritable, __freading, __fwriting - access internals of FILE structure

SYNOPSIS

#include <stdio.h>

#include <stdio_ext.h>

size_t __fbufsize(FILE *fp);

size_t __fpending(FILE *fp);

int __flbf(FILE *fp);

int __freadable(FILE *fp);

int __fwritable(FILE *fp);

int __freading(FILE *fp);

int __fwriting(FILE *fp);

DESCRIPTION

These functions provides access to the internals of the FILE structure fp.

RETURNS

__fbufsize returns the number of bytes in the buffer of stream fp.

__fpending returns the number of bytes in the output buffer of stream fp.

__flbf returns nonzero if stream fp is line-buffered, and 0 if not.

__freadable returns nonzero if stream fp may be read, and 0 if not.

__fwritable returns nonzero if stream fp may be written, and 0 if not.

__freading returns nonzero if stream fp if the last operation on it was a read, or if it read-only, and 0 if not.

__fwriting returns nonzero if stream fp if the last operation on it was a write, or if it write-only, and 0 if not.

PORTABILITY

These functions originate from Solaris and are also provided by GNU libc.

No supporting OS subroutines are required.

AUTHORS

Steve Chamberlain
    Author.

Roland Pesch
    Author.

Red Hat Support

Jeff Johnston
    Author.

COPYRIGHT

This file documents the ANSI C library.

Copyright (C) 1992, 1993, 1994-2014 Red Hat, Inc.

libc includes software developed by the University of California, Berkeley and its contributors.

libc includes software developed by Martin Jackson, Graham Haley and Steve Chamberlain of Tadpole Technology and released to Cygnus.

libc uses floating-point conversion software developed at AT&T, which includes this copyright information:

The author of this software is David M. Gay.

Copyright (c) 1991 by AT&T.

Permission to use, copy, modify, and distribute this software for any purpose without fee is hereby granted, provided that this entire notice is included in all copies of any software which is or includes a copy or modification of this software and in all copies of the supporting documentation for such software.

THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, subject to the terms of the GNU General Public License, which includes the provision that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions.