NAME

       towctrans - wide-character transliteration

SYNOPSIS

       #include <wctype.h>

       wint_t towctrans(wint_t wc, wctrans_t desc);

DESCRIPTION

       The  towctrans() function shall transliterate the wide-character code wc using the mapping
       described by desc. The current setting of the LC_CTYPE category  should  be  the  same  as
       during  the  call  to  wctrans()  that returned the value desc.    If the value of desc is
       invalid (that is, not obtained by a  call  to  wctrans()  or  desc  is  invalidated  by  a
       subsequent  call  to  setlocale()  that  has  affected  category LC_CTYPE ), the result is
       unspecified.

       An application wishing to check for error situations should set errno to 0 before  calling
       towctrans(). If errno is non-zero on return, an error has occurred.

RETURN VALUE

       If  successful,  the  towctrans()  function  shall return the mapped value of wc using the
       mapping described by desc. Otherwise, it shall return wc unchanged.

ERRORS

       The towctrans() function may fail if:

       EINVAL desc contains an invalid transliteration descriptor.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       The strings "tolower" and "toupper" are reserved for the standard mapping  names.  In  the
       table below, the functions in the left column are equivalent to the functions in the right
       column.

              towlower(wc)    towctrans(wc, wctrans("tolower"))
              towupper(wc)    towctrans(wc, wctrans("toupper"))

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       towlower() , towupper() , wctrans() , the Base Definitions volume of IEEE Std 1003.1-2001,
       <wctype.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .