stdio/feof.c

   1 /* Copyright (C) 1991, 1996, 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <stdio.h>
  21
  22 #undef  feof
  23 #undef  feof_unlocked
  24
  25 /* Return non-zero if STREAM has its EOF indicator set.  */
  26 int
  27 feof (stream)
  28      FILE *stream;
  29 {
  30   if (!__validfp (stream))
  31     {
  32       __set_errno (EINVAL);
  33       return -1;
  34     }
  35
  36   return stream->__eof;
  37 }
  38
  39 weak_alias (feof, feof_unlocked)