wctob(3) Library Functions Manual wctob(3)

wctob - try to represent a wide character as a single byte

Standard C library (libc, -lc)

#include <wchar.h>
int wctob(wint_t c);

The wctob() function tests whether the multibyte representation of the wide character c, starting in the initial state, consists of a single byte. If so, it is returned as an unsigned char.

Never use this function. It cannot help you in writing internationalized programs. Internationalized programs must never distinguish single-byte and multibyte characters.

The wctob() function returns the single-byte representation of c, if it exists, or EOF otherwise.

For an explanation of the terms used in this section, see attributes(7).

Interface Attribute Value
wctob () Thread safety MT-Safe

POSIX.1-2001, POSIX.1-2008, C99.

The behavior of wctob() depends on the LC_CTYPE category of the current locale.

This function should never be used. Internationalized programs must never distinguish single-byte and multibyte characters. Use either wctomb(3) or the thread-safe wcrtomb(3) instead.

btowc(3), wcrtomb(3), wctomb(3)

2022-12-15 Linux man-pages 6.02