iswxdigit — test for hexadecimal digit wide character
#include <wctype.h>
int
iswxdigit( |
wint_t | wc) ; |
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'.
The iswxdigit
() function
returns non-zero if wc
is a wide character
belonging to the wide-character class "xdigit". Otherwise it
returns zero.
The behaviour of iswxdigit
()
depends on the LC_CTYPE category of the current locale.
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