FWIDE(3) | Library Functions Manual | FWIDE(3)

# NAME

`fwide` — get/set orientation of a stream

# SYNOPSIS

`#include <stdio.h>`
`#include <wchar.h>`

int
`fwide`(FILE *stream, int mode);

# DESCRIPTION

The `fwide`() function determines the orientation of the stream pointed at by stream.

If the orientation of stream has already been determined, `fwide`() leaves it unchanged. Otherwise, `fwide`() sets the orientation of stream according to mode.

If mode is less than zero, stream is set to byte-oriented. If it is greater than zero, stream is set to wide-oriented. Otherwise, mode is zero, and stream is unchanged.

# RETURN VALUES

`fwide`() returns a value according to orientation after the call of `fwide`(); a value less than zero if byte-oriented, a value greater than zero if wide-oriented, and zero if the stream has no orientation.

# SEE ALSO

ferror(3), fgetc(3), fgetwc(3), fopen(3), fputc(3), fputwc(3), freopen(3), stdio(3)

# STANDARDS

The `fwide`() function conforms to ISO/IEC 9899:1999 (“ISO C99”).

May 31, 2007 | Debian