NAME
setlinebuf() — assign buffering to a stream
SYNOPSIS
void setlinebuf(
FILE *stream
);
Parameters
- stream
Pointer to the input/output stream.
- buffer
Pointer to a character array.
- size
The size of the buffer to be used.
DESCRIPTION
To use this function, compile with the option
-I/usr/include/ep
and link in the libcext library by specifying
-lcext,
for example:
cc -I/usr/include/ep [flag]... cfile[...] -lcext [...]
The
setlinebuf()
function is used to change
stdout
or
stderr
from block-buffered or unbuffered to line-buffered.
Unlike the
setbuf()
function, the
setlinebuf()
function can be used any time the file descriptor is active.
A buffer is normally obtained from the
malloc()
function
at the time of the first
getc()
or
putc()
function on the file, except that the standard error stream,
stderr,
is normally not buffered.
Output streams directed to terminals are always
either line-buffered or unbuffered.
Notes
A common source of error is
allocating buffer space as an automatic variable in a code block
and then failing to close the stream in the same block.
RETURN VALUES
The
setlinebuf()
function do not return any value.
WARNINGS
Users of
setlinebuf()
should note that the
libcext
library will not be available in future releases of HP-UX.
However this function is available as part of the C library
libc.
AUTHOR
setlinebuf()
function was developed by HP.
