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WCRTOMB(3)                              BSD Library Functions Manual                              WCRTOMB(3)

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

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wchar.h>

     size_t
     wcrtomb(char *restrict s, wchar_t wc, mbstate_t *restrict ps);

     #include <wchar.h>
     #include <xlocale.h>

     size_t
     wcrtomb_l(char *restrict s, wchar_t wc, mbstate_t *restrict ps, locale_t loc);

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

     If s is NULL, wcrtomb() behaves as if s pointed to an internal buffer and wc were 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, which is initialized to the initial conversion state at program
     startup.

     While the wcrtomb() function uses the current locale, the wcrtomb_l() function may be passed a locale
     directly. See xlocale(3) for more information.

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.

     [EINVAL]           The conversion state is invalid.

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

STANDARDS
     The wcrtomb() function conforms to ISO/IEC 9899:1999 (``ISO C99'').

BSD                                             April 8, 2004                                            BSD