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iswalpha(3) [v7 man page]

ISWALPHA(3)						     Linux Programmer's Manual						       ISWALPHA(3)

NAME
iswalpha - test for alphabetic wide character SYNOPSIS
#include <wctype.h> int iswalpha(wint_t wc); DESCRIPTION
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'. RETURN VALUE
The iswalpha() function returns nonzero if wc is a wide character belonging to the wide-character class "alpha". Otherwise, it returns zero. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +-----------+---------------+----------------+ |Interface | Attribute | Value | +-----------+---------------+----------------+ |iswalpha() | Thread safety | MT-Safe locale | +-----------+---------------+----------------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C99. NOTES
The behavior of iswalpha() depends on the LC_CTYPE category of the current locale. SEE ALSO
isalpha(3), iswctype(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2015-08-08 ISWALPHA(3)

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ISWALPHA(3)						     Linux Programmer's Manual						       ISWALPHA(3)

NAME
iswalpha - test for alphabetic wide character SYNOPSIS
#include <wctype.h> int iswalpha(wint_t wc); DESCRIPTION
The iswalpha function is the wide-character equivalent of the isalpha 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'. RETURN VALUE
The iswalpha function returns non-zero if wc is a wide character belonging to the wide character class "alpha". Otherwise it returns zero. CONFORMING TO
ISO/ANSI C, UNIX98 SEE ALSO
isalpha(3), iswctype(3) NOTES
The behaviour of iswalpha depends on the LC_CTYPE category of the current locale. GNU
1999-07-25 ISWALPHA(3)
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