WCRTOMB(3)

NAME
wcrtomb - convert a wide-character code to a character (restartable)

LIBRARY
libc

SYNOPSIS
#include <wchar.h>
size_t
wcrtomb(char * restrict s, wchar_t wc, mbstate_t * restrict ps);

DESCRIPTION
The wcrtomb() function stores a multibyte sequence representing the wide character wc, including any necessary shift sequences, to the character array s, storing a maximum of MB_CUR_MAX bytes.

If s is NULL, wcrtomb() behaves as if s pointed to an internal buffer and wc was a null wide character (L'\0').

The mbstate_t argument, ps, is used to keep track of the shift state. If it is NULL, wcrtomb() uses an internal, static mbstate_t object.

RETURN VALUES
The wcrtomb() functions returns the length (in bytes) of the multibyte sequence needed to represent wc, or (size_t)-1 if wc is not a valid wide character code.

ERRORS
The wcrtomb() function will fail if:

[EILSEQ]
    An invalid wide character code was specified.

SEE ALSO
mbrtowc(3), setlocale(3), wctomb(3)

STANDARDS
The wcrtomb() function conforms to isoC-99.

BUGS
The current implementation does not support shift states.