1WCTYPE(3P) POSIX Programmer's Manual WCTYPE(3P)
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6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
13 wctype, wctype_l — define character class
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16 #include <wctype.h>
17 wctype_t wctype(const char *property);
19 wctype_t wctype_l(const char *property, locale_t locale);
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22 For wctype(): The functionality described on this reference page is
23 aligned with the ISO C standard. Any conflict between the requirements
24 described here and the ISO C standard is unintentional. This volume of
25 POSIX.1‐2008 defers to the ISO C standard.
26 The wctype() and wctype_l() functions are defined for valid character
28 class names as defined in the current locale or in the locale repre‐
29 sented by locale, respectively.
30 The property argument is a string identifying a generic character class
32 for which codeset-specific type information is required. The following
33 character class names shall be defined in all locales:
34 alnum digit punct
37 alpha graph space
38 blank lower upper
39 cntrl print xdigit
40 Additional character class names defined in the locale definition file
42 (category LC_CTYPE) can also be specified.
43 These functions shall return a value of type wctype_t, which can be
45 used as the second argument to subsequent calls of iswctype() and iswc‐
46 type_l().
47 The wctype() and wctype_l() functions shall determine values of
49 wctype_t according to the rules of the coded character set defined by
50 character type information in the current locale or in the locale rep‐
51 resented by locale, respectively (category LC_CTYPE).
52 The values returned by wctype() shall be valid until a call to setlo‐
54 cale() that modifies the category LC_CTYPE.
55 The values returned by wctype_l() shall be valid only in calls to iswc‐
57 type_l() with a locale represented by locale with the same LC_CTYPE
58 category value.
59 The behavior is undefined if the locale argument to wctype_l() is the
61 special locale object LC_GLOBAL_LOCALE or is not a valid locale object
62 handle.
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65 The wctype() and wctype_l() functions shall return 0 if the given char‐
66 acter class name is not valid for the current locale (category
67 LC_CTYPE); otherwise, they shall return an object of type wctype_t that
68 can be used in calls to iswctype() and iswctype_l().
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71 No errors are defined.
72 The following sections are informative.
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76 None.
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79 None.
80
82 None.
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85 None.
86
88 iswctype()
89 The Base Definitions volume of POSIX.1‐2008, <wctype.h>
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93 Portions of this text are reprinted and reproduced in electronic form
94 from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
95 -- Portable Operating System Interface (POSIX), The Open Group Base
96 Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
97 cal and Electronics Engineers, Inc and The Open Group. (This is
98 POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
99 event of any discrepancy between this version and the original IEEE and
100 The Open Group Standard, the original IEEE and The Open Group Standard
101 is the referee document. The original Standard can be obtained online
102 at http://www.unix.org/online.html .
103 Any typographical or formatting errors that appear in this page are
105 most likely to have been introduced during the conversion of the source
106 files to man page format. To report such errors, see https://www.ker‐
107 nel.org/doc/man-pages/reporting_bugs.html .
108IEEE/The Open Group 2013 WCTYPE(3P)