1WCTYPE(3P)                 POSIX Programmer's Manual                WCTYPE(3P)
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PROLOG

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.
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NAME

12       wctype - define character class
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SYNOPSIS

15       #include <wctype.h>
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17       wctype_t wctype(const char *property);
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DESCRIPTION

21       The wctype() function is defined for valid  character  class  names  as
22       defined  in the current locale. The property argument is a string iden‐
23       tifying a generic  character  class  for  which  codeset-specific  type
24       information  is  required. The following character class names shall be
25       defined in all locales:
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28 alnum                        digit                        punct
29 alpha                        graph                        space
30 blank                        lower                        upper
31 cntrl                        print                        xdigit
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34       Additional character class names defined in the locale definition  file
35       (category LC_CTYPE ) can also be specified.
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37       The  function  shall return a value of type wctype_t, which can be used
38       as the second argument to subsequent calls of iswctype().  The wctype()
39       function  shall  determine values of wctype_t according to the rules of
40       the coded character set defined by character type  information  in  the
41       program's  locale (category LC_CTYPE ). The values returned by wctype()
42       shall be valid until a call to setlocale() that modifies  the  category
43       LC_CTYPE .
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RETURN VALUE

46       The  wctype() function shall return 0 if the given character class name
47       is not valid for the current locale (category LC_CTYPE ); otherwise, it
48       shall  return  an  object of type wctype_t that can be used in calls to
49       iswctype().
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ERRORS

52       No errors are defined.
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54       The following sections are informative.
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EXAMPLES

57       None.
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APPLICATION USAGE

60       None.
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RATIONALE

63       None.
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FUTURE DIRECTIONS

66       None.
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SEE ALSO

69       iswctype(),  the  Base  Definitions  volume  of   IEEE Std 1003.1-2001,
70       <wctype.h>
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73       Portions  of  this text are reprinted and reproduced in electronic form
74       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
75       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
76       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
77       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
78       event of any discrepancy between this version and the original IEEE and
79       The  Open Group Standard, the original IEEE and The Open Group Standard
80       is the referee document. The original Standard can be  obtained  online
81       at http://www.opengroup.org/unix/online.html .
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85IEEE/The Open Group                  2003                           WCTYPE(3P)
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