NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | NOTES | SEE ALSO | COLOPHON
ISWALPHA(3) Linux Programmer's Manual ISWALPHA(3)
iswalpha - test for alphabetic wide character
#include <wctype.h>
int iswalpha(wint_t wc);
The iswalpha() function is the wide-character equivalent of the isalpha(3)
function. It tests whether wc is a wide character belonging to the wide-
character class "alpha".
The wide-character class "alpha" 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
"alpha" is disjoint from the wide-character class "cntrl".
Being a subclass of the wide-character class "graph", the wide-character class
"alpha" 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
"alpha" is disjoint from the wide-character class "punct".
The wide-character class "alpha" is disjoint from the wide-character class
"digit".
The wide-character class "alpha" contains the wide-character classes "upper"
and "lower".
The wide-character class "alpha" always contains at least the letters 'A' to
'Z' and 'a' to 'z'.
The iswalpha() function returns non-zero if wc is a wide character belonging
to the wide-character class "alpha". Otherwise it returns zero.
C99.
The behavior of iswalpha() depends on the LC_CTYPE category of the current
locale.
isalpha(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 ISWALPHA(3)