ISWXDIGIT

Section: Linux Programmer's Manual (3)
Updated: 1999-07-25
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NAME

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(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 aqAaq to aqFaq, aqaaq to aqfaq and the digits aq0aq to aq9aq.  

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

C99.  

NOTES

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

SEE ALSO

iswctype(3), isxdigit(3)  

COLOPHON

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