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1 | .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
2 | .\" | |
89e3ffe9 | 3 | .\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA) |
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4 | .\" This is free documentation; you can redistribute it and/or |
5 | .\" modify it under the terms of the GNU General Public License as | |
6 | .\" published by the Free Software Foundation; either version 2 of | |
7 | .\" the License, or (at your option) any later version. | |
fe382ebf | 8 | .\" %%%LICENSE_END |
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9 | .\" |
10 | .\" References consulted: | |
11 | .\" GNU glibc-2 source code and manual | |
12 | .\" Dinkumware C library reference http://www.dinkumware.com/ | |
008f1ecc | 13 | .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html |
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14 | .\" ISO/IEC 9899:1999 |
15 | .\" | |
460495ca | 16 | .TH WCTYPE 3 2015-08-08 "GNU" "Linux Programmer's Manual" |
fea681da | 17 | .SH NAME |
d0f17b57 | 18 | wctype \- wide-character classification |
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19 | .SH SYNOPSIS |
20 | .nf | |
21 | .B #include <wctype.h> | |
68e4db0a | 22 | .PP |
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23 | .BI "wctype_t wctype(const char *" name ); |
24 | .fi | |
25 | .SH DESCRIPTION | |
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26 | The |
27 | .I wctype_t | |
28 | type represents a property which a wide character may or | |
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29 | may not have. |
30 | In other words, it represents a class of wide characters. | |
a43eed0c | 31 | This type's nature is implementation-dependent, but the special value |
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32 | .I "(wctype_t) 0" |
33 | denotes an invalid property. | |
34 | Nonzero | |
35 | .I wctype_t | |
36 | values | |
60a90ecd MK |
37 | can be passed to the |
38 | .BR iswctype (3) | |
39 | function | |
c13182ef | 40 | to actually test whether a given |
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41 | wide character has the property. |
42 | .PP | |
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43 | The |
44 | .BR wctype () | |
45 | function returns a property, given by its name. | |
c13182ef | 46 | The set of |
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47 | valid names depends on the |
48 | .B LC_CTYPE | |
49 | category of the current locale, but the | |
fea681da | 50 | following names are valid in all locales. |
a2b7a144 | 51 | .PP |
fea681da | 52 | .nf |
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53 | "alnum" \- realizes the \fBisalnum\fP(3) classification function |
54 | "alpha" \- realizes the \fBisalpha\fP(3) classification function | |
55 | "blank" \- realizes the \fBisblank\fP(3) classification function | |
56 | "cntrl" \- realizes the \fBiscntrl\fP(3) classification function | |
57 | "digit" \- realizes the \fBisdigit\fP(3) classification function | |
58 | "graph" \- realizes the \fBisgraph\fP(3) classification function | |
59 | "lower" \- realizes the \fBislower\fP(3) classification function | |
60 | "print" \- realizes the \fBisprint\fP(3) classification function | |
61 | "punct" \- realizes the \fBispunct\fP(3) classification function | |
62 | "space" \- realizes the \fBisspace\fP(3) classification function | |
63 | "upper" \- realizes the \fBisupper\fP(3) classification function | |
64 | "xdigit" \- realizes the \fBisxdigit\fP(3) classification function | |
fea681da | 65 | .fi |
47297adb | 66 | .SH RETURN VALUE |
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67 | The |
68 | .BR wctype () | |
69 | function returns a property descriptor | |
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70 | if the |
71 | .I name | |
72 | is valid. | |
2b9b829d | 73 | Otherwise, it returns |
eb0ac593 | 74 | .IR "(wctype_t) 0" . |
060d7a6e | 75 | .SH ATTRIBUTES |
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76 | For an explanation of the terms used in this section, see |
77 | .BR attributes (7). | |
78 | .TS | |
79 | allbox; | |
80 | lb lb lb | |
81 | l l l. | |
82 | Interface Attribute Value | |
83 | T{ | |
060d7a6e | 84 | .BR wctype () |
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85 | T} Thread safety MT-Safe locale |
86 | .TE | |
47297adb | 87 | .SH CONFORMING TO |
f01583a1 | 88 | POSIX.1-2001, POSIX.1-2008, C99. |
fea681da | 89 | .SH NOTES |
d9bfdb9c | 90 | The behavior of |
60a90ecd | 91 | .BR wctype () |
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92 | depends on the |
93 | .B LC_CTYPE | |
94 | category of the | |
fea681da | 95 | current locale. |
47297adb | 96 | .SH SEE ALSO |
e37e3282 | 97 | .BR iswctype (3) |