projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
| 2 | .\" | |
| 3 | .\" This is free documentation; you can redistribute it and/or | |
| 4 | .\" modify it under the terms of the GNU General Public License as | |
| 5 | .\" published by the Free Software Foundation; either version 2 of | |
| 6 | .\" the License, or (at your option) any later version. | |
| 7 | .\" | |
| 8 | .\" References consulted: | |
| 9 | .\" GNU glibc-2 source code and manual | |
| 10 | .\" Dinkumware C library reference http://www.dinkumware.com/ | |
| 11 | .\" OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html | |
| 12 | .\" ISO/IEC 9899:1999 | |
| 13 | .\" | |
| 14 | .TH ISWALNUM 3 1999-07-25 "GNU" "Linux Programmer's Manual" | |
| 15 | .SH NAME | |
| 16 | iswalnum \- test for alphanumeric wide character | |
| 17 | .SH SYNOPSIS | |
| 18 | .nf | |
| 19 | .B #include <wctype.h> | |
| 20 | .sp | |
| 21 | .BI "int iswalnum(wint_t " wc ); | |
| 22 | .fi | |
| 23 | .SH DESCRIPTION | |
| e511ffb6 | 24 | The \fBiswalnum\fP() function is the wide-character equivalent of the |
| 3382bd94 | 25 | \fBisalnum\fP() function. It tests whether \fIwc\fP is a wide character |
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26 | belonging to the wide character class "alnum". |
| 27 | .PP | |
| 28 | The wide character class "alnum" is a subclass of the wide character class | |
| 29 | "graph", and therefore also a subclass of the wide character class "print". | |
| 30 | .PP | |
| 31 | Being a subclass of the wide character class "print", the wide character class | |
| 32 | "alnum" is disjoint from the wide character class "cntrl". | |
| 33 | .PP | |
| 34 | Being a subclass of the wide character class "graph", the wide character class | |
| 35 | "alnum" is disjoint from the wide character class "space" and its subclass | |
| 36 | "blank". | |
| 37 | .PP | |
| 38 | The wide character class "alnum" is disjoint from the wide character class | |
| 39 | "punct". | |
| 40 | .PP | |
| 41 | The wide character class "alnum" is the union of the wide character classes | |
| 42 | "alpha" and "digit". As such, it also contains the wide character class | |
| 43 | "xdigit". | |
| 44 | .PP | |
| 45 | The wide character class "alnum" always contains at least the letters 'A' | |
| 46 | to 'Z', 'a' to 'z' and the digits '0' to '9'. | |
| 47 | .SH "RETURN VALUE" | |
| e511ffb6 | 48 | The \fBiswalnum\fP() function returns non-zero if \fIwc\fP is a wide character |
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49 | belonging to the wide character class "alnum". Otherwise it returns zero. |
| 50 | .SH "CONFORMING TO" | |
| 51 | ISO/ANSI C, UNIX98 | |
| 52 | .SH "SEE ALSO" | |
| 53 | .BR isalnum (3), | |
| 54 | .BR iswctype (3) | |
| 55 | .SH NOTES | |
| e511ffb6 | 56 | The behaviour of \fBiswalnum\fP() depends on the LC_CTYPE category of the |
| fea681da | 57 | current locale. |