iswxdigit - test for hexadecimal digit wide character

       For an explanation of the terms used in this section, see attributes(7).
       ┌──────────────────────────────────────────────────────────────────────┬───────────────┬────────────────┐
       │ Interface                                                            │ Attribute     │ Value          │
       ├──────────────────────────────────────────────────────────────────────┼───────────────┼────────────────┤
       │ iswxdigit()                                                          │ Thread safety │ MT-Safe locale │
       └──────────────────────────────────────────────────────────────────────┴───────────────┴────────────────┘

       The  iswxdigit() function is the wide-character equivalent of the isxdigit(3) function.  It tests whether
       wc is a wide character belonging to the wide-character class "xdigit".

       The wide-character class "xdigit" is a subclass of the wide-character class "alnum", and therefore also a
       subclass of the wide-character class "graph" and of the wide-character class "print".

       Being a subclass of the wide-character class "print", the wide-character class "xdigit" is disjoint  from
       the wide-character class "cntrl".

       Being  a subclass of the wide-character class "graph", the wide-character class "xdigit" is disjoint from
       the wide-character class "space" and its subclass "blank".

       Being a subclass of the wide-character class "alnum", the wide-character class "xdigit" is disjoint  from
       the wide-character class "punct".

       The  wide-character  class  "xdigit"  always contains at least the letters 'A' to 'F', 'a' to 'f' and the
       digits '0' to '9'.

       POSIX.1-2001, C99.

       Standard C library (libc, -lc)

       iswxdigit - test for hexadecimal digit wide character

       The behavior of iswxdigit() depends on the LC_CTYPE category of the current locale.

       The iswxdigit() function returns nonzero if wc is a wide character belonging to the wide-character  class
       "xdigit".  Otherwise, it returns zero.

iswctype(3), isxdigit(3)

Linux man-pages 6.9.1                              2024-05-02                                       iswxdigit(3)

       C11, POSIX.1-2008.

#include<wctype.h>intiswxdigit(wint_twc);