setbuffer()

alter buffering behavior of stream 

Function

SYNOPSIS

#include <stdio.h>

void setbuffer(FILE *stream, char *buf, int size);

DESCRIPTION

The setbuffer() function lets the program control the buffer of a given stream. This function may be used after the stream pointed to by stream is associated with an open file, but before any other operation is performed on the stream. If buf is not a NULL pointer, the array it points to is used instead of a buffer allocated by setbuffer().

Except that it returns no value, the setbuffer() function is equivalent to the setvbuf() function invoked with the values _IOFBF for mode or, if buf is a null pointer, with the value _IONBF for mode.

PARAMETERS

stream 

Points to FILE structure.

buf 

Is a user-allocated buffer.

size 

Is a user-specified buffer size.

RETURN VALUES

None.

CONFORMANCE

4.4BSD.

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

None.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
setbuf(), setvbuf()

MKS Toolkit 9.3 Documentation Build 6.