iswxdigit - test for hexadecimal digit wide character
SYNOPSIS
#include <wctype.h>
int iswxdigit (wint_t wc);
DESCRIPTION
The iswxdigit function is the wide-character equivalent of
the isxdigit function. It tests whether wc is a wide char
acter 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 sub
class 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'.
RETURN VALUE
The iswxdigit function returns non-zero if wc is a wide
character belonging to the wide character class "xdigit".
Otherwise it returns zero.
CONFORMING TO
ISO/ANSI C, UNIX98
SEE ALSO
isxdigit(3), iswctype(3)
NOTES
The behaviour of iswxdigit depends on the LC_CTYPE cate
gory of the current locale.
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