setvbuf.c File Reference

#include "../stdio.h"

Functions
int	setvbuf (FILE *stream, char *buffer, int mode, size_t size)
	Change stream buffering. More...

Function Documentation

setvbuf()

int setvbuf	(	FILE *	stream,
		char *	buffer,
		int	mode,
		size_t	size
	)

Change stream buffering.

Specifies a buffer for stream. The function allows to specify the mode and size of the buffer (in bytes). If buffer is a null pointer, the function automatically allocates a buffer (using size as a hint on the size to use).

Parameters

stream	Pointer to a FILE object that identifies the stream to be closed.
buffer	User allocated buffer. Shall be at least BUFSIZ bytes long.
mode	Specifies a mode for file buffering (full buffering: _IOFBF, line buffering: _IOLBF, no buffering: _IONBF).
size	User allocated buffer. Shall be at least BUFSIZ bytes long.

Returns

If the buffer is correctly assigned to the file, a zero value is returned. Otherwise, a non-zero value is returned.