Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdlib.h>

     size_t
     wcstombs(char * restrict mbstring, const wchar_t * restrict wcstring,
         size_t nbytes);

     #include <xlocale.h>

     size_t
     wcstombs_l(char * restrict mbstring, const wchar_t * restrict wcstring,
         size_t nbytes, locale_t loc);

DESCRIPTION

     The wcstombs() function converts a wide character string wcstring into a
     multibyte character string, mbstring, beginning in the initial conversion
     state.  Up to nbytes bytes are stored in mbstring.  Partial multibyte
     characters at the end of the string are not stored.  The multibyte char-
     acter string is null terminated if there is room.

     While the wcstombs() function uses the current locale, the wcstombs_l()
     function may be passed a locale directly. See xlocale(3) for more infor-
     mation.

RETURN VALUES

     The wcstombs() function returns the number of bytes converted (not
     including any terminating null), if successful, otherwise it returns
     (size_t)-1.

ERRORS

     The wcstombs() function will fail if:

     [EILSEQ]           An invalid wide character was encountered.

     [EINVAL]           The conversion state is invalid.

SEE ALSO

     mbstowcs(3), multibyte(3), wcsrtombs(3), wctomb(3), xlocale(3)

STANDARDS

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

BSD                              April 8, 2004                             BSD