NAME

       iswxdigit - test for a hexadecimal digit wide-character code

SYNOPSIS

       #include <wctype.h>

       int iswxdigit(wint_t wc);

DESCRIPTION

       The iswxdigit() function shall test whether wc is a wide-character code representing a character of class
       xdigit  in the program's current locale; see the Base Definitions volume of IEEE Std 1003.1-2001, Chapter
       7, Locale.

       The wc argument is a wint_t, the value of which the application shall ensure  is  a  wide-character  code
       corresponding to a valid character in the current locale, or equal to the value of the macro WEOF. If the
       argument has any other value, the behavior is undefined.

RETURN VALUE

       The  iswxdigit()  function  shall  return  non-zero  if  wc  is  a hexadecimal digit wide-character code;
       otherwise, it shall return 0.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       To ensure applications portability, especially across natural languages, only  this  function  and  those
       listed in the SEE ALSO section should be used for classification of wide-character codes.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       iswalnum()  ,  iswalpha() , iswcntrl() , iswctype() , iswdigit() , iswgraph() , iswlower() , iswprint() ,
       iswpunct() , iswspace() , iswupper() , setlocale() , the Base Definitions volume of IEEE Std 1003.1-2001,
       Chapter 7, Locale, <wchar.h>, <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 .

IEEE/The Open Group                                   2003                                          ISWXDIGIT(P)