1 .\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
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10 .\" References consulted:
11 .\" GNU glibc-2 source code and manual
12 .\" Dinkumware C library reference http://www.dinkumware.com/
13 .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
16 .TH ISWALNUM 3 1999-07-25 "GNU" "Linux Programmer's Manual"
18 iswalnum \- test for alphanumeric wide character
21 .B #include <wctype.h>
23 .BI "int iswalnum(wint_t " wc );
28 function is the wide-character equivalent of the
31 It tests whether \fIwc\fP is a wide character
32 belonging to the wide-character class "alnum".
34 The wide-character class "alnum" is a subclass of the wide-character class
35 "graph", and therefore also a subclass of the wide-character class "print".
37 Being a subclass of the wide-character class "print",
38 the wide-character class
39 "alnum" is disjoint from the wide-character class "cntrl".
41 Being a subclass of the wide-character class "graph",
42 the wide-character class "alnum" is disjoint from
43 the wide-character class "space" and its subclass "blank".
45 The wide-character class "alnum" is disjoint from the wide-character class
48 The wide-character class "alnum" is the union of the wide-character classes
50 As such, it also contains the wide-character class
53 The wide-character class "alnum" always contains at least the letters \(aqA\(aq
54 to \(aqZ\(aq, \(aqa\(aq to \(aqz\(aq and the digits \(aq0\(aq to \(aq9\(aq.
58 function returns nonzero
59 if \fIwc\fP is a wide character
60 belonging to the wide-character class "alnum".
61 Otherwise it returns zero.