Update.
[glibc.git] / stdio / ferror.c
blobeaa5fc9826456c0eee258e4e214c9de50696c343
1 /* Copyright (C) 1991, 1996, 1997, 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 #include <errno.h>
20 #include <stdio.h>
22 #undef ferror
23 #undef ferror_unlocked
26 /* Return non-zero if STREAM has its error indicator set. */
27 int
28 ferror (stream)
29 FILE *stream;
31 if (!__validfp (stream))
33 __set_errno (EINVAL);
34 return -1;
37 return stream->__error;
40 weak_alias (ferror, ferror_unlocked)