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Diffstat (limited to 'gnu/freadahead.h')
-rwxr-xr-x | gnu/freadahead.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gnu/freadahead.h b/gnu/freadahead.h new file mode 100755 index 00000000..54466b40 --- /dev/null +++ b/gnu/freadahead.h @@ -0,0 +1,38 @@ +/* Retrieve information about a FILE stream. + Copyright (C) 2007-2010 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <stddef.h> +#include <stdio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* Assuming the stream STREAM is open for reading: + Return the number of bytes waiting in the input buffer of STREAM. + This includes both the bytes that have been read from the underlying input + source and the bytes that have been pushed back through 'ungetc'. + + If this number is 0 and the stream is not currently writing, + fflush (STREAM) is known to be a no-op. + + STREAM must not be wide-character oriented. */ + +extern size_t freadahead (FILE *stream); + +#ifdef __cplusplus +} +#endif |