WCTRANS(3) BSD Library Functions Manual WCTRANS(3)

NAME
     ttoowwccttrraannss, wwccttrraannss, ttoowwccttrraannssll, wwccttrraannssll - wide character mapping
     functions

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     wintt
     ttoowwccttrraannss(wintt wc, wctranst desc);

     wctranst
     wwccttrraannss(const char *charclass);

     ##iinncclluuddee <>

     wintt
     ttoowwccttrraannssll(wintt wc, wctranst desc, localet loc);

     wctranst
     wwccttrraannssll(const char *charclass, localet loc);

DESCRIPTION
     The wwccttrraannss() function returns a value of type wctranst which represents
     the requested wide character mapping operation and may be used as the
     second argument for calls to ttoowwccttrraannss().

     The following character mapping names are recognised:

           tolower    toupper

     The ttoowwccttrraannss() function transliterates the wide character wc according
     to the mapping described by desc.

     While the ttoowwccttrraannss() and wwccttrraannss() functions use the current locale, the
     ttoowwccttrraannssll() and wwccttrraannssll() functions may be passed locales directly.
     See xlocale(3) for more information.

RETURN VALUES
     The ttoowwccttrraannss() function returns the transliterated character if success-
     ful, otherwise it returns the character unchanged and sets errno.

     The wwccttrraannss() function returns non-zero if successful, otherwise it
     returns zero and sets errno.

EEXXAAMMPPLLEESS
     Reimplement ttoowwuuppppeerr() in terms of ttoowwccttrraannss() and wwccttrraannss():

           wintt
           mytowupper(wintt wc)
           {
                   return (towctrans(wc, wctrans("toupper")));
           }

EERRRROORRSS
     The ttoowwccttrraannss() function will fail if:

     [EINVAL]           The supplied desc argument is invalid.

     The wwccttrraannss() function will fail if:

     [EINVAL]           The requested mapping name is invalid.

SEE ALSO
     tolower(3), toupper(3), wctype(3), xlocale(3)

STANDARDS
     The ttoowwccttrraannss() and wwccttrraannss() functions conform to IEEE Std 1003.1-2001
     (``POSIX.1'').

HISTORY     The ttoowwccttrraannss() and wwccttrraannss() functions first appeared in FreeBSD 5.0.

BSD                             October 3, 2002                            BSD