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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 infor-
     mation.


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

Mac OS X 10.6 - Generated Thu Sep 17 20:23:39 CDT 2009
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