NAME
iswxdigit - test for hexadecimal digit wide character
SYNOPSIS
#include <wctype.h>
I int iswxdigit(wint_t wc );
DESCRIPTION
The
R 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'.
RETURN VALUE
The
R iswxdigit ()
function returns non-zero if wc is a wide character
belonging to the wide-character class "xdigit".
Otherwise it returns zero.
CONFORMING TO
C99.
NOTES
The behavior of
R iswxdigit ()
depends on the
LC_CTYPE
category of the
current locale.
SEE ALSO
ČLÁNKY DO MAILU