1 /* Retrieve information about a FILE stream.
2 Copyright (C) 2007 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program 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
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* Assuming the stream STREAM is open for reading:
25 Return the number of bytes waiting in the input buffer of STREAM.
27 If this number is 0 and the stream is not currently writing,
28 fflush (STREAM) is known to be a no-op.
30 STREAM must not be wide-character oriented. */
32 extern size_t freadahead (FILE *stream);