NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | NOTES | SEE ALSO | COLOPHON
ISWALNUM(3) Linux Programmer's Manual ISWALNUM(3)
iswalnum - test for alphanumeric wide character
#include <wctype.h>
int iswalnum(wint_t wc);
The iswalnum() function is the wide-character equivalent of the isalnum(3)
function. It tests whether wc is a wide character belonging to the wide-
character class "alnum".
The wide-character class "alnum" is a subclass of the wide-character class
"graph", and therefore also a subclass of the wide-character class "print".
Being a subclass of the wide-character class "print", the wide-character class
"alnum" is disjoint from the wide-character class "cntrl".
Being a subclass of the wide-character class "graph", the wide-character class
"alnum" is disjoint from the wide-character class "space" and its subclass
"blank".
The wide-character class "alnum" is disjoint from the wide-character class
"punct".
The wide-character class "alnum" is the union of the wide-character classes
"alpha" and "digit". As such, it also contains the wide-character class
"xdigit".
The wide-character class "alnum" always contains at least the letters 'A' to
'Z', 'a' to 'z' and the digits '0' to '9'.
The iswalnum() function returns non-zero if wc is a wide character belonging
to the wide-character class "alnum". Otherwise it returns zero.
C99.
The behavior of iswalnum() depends on the LC_CTYPE category of the current
locale.
isalnum(3), iswctype(3)
This page is part of release 3.23 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
GNU 1999-07-25 ISWALNUM(3)