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Linux 2.6 - man page for wctype (linux section 3posix)

WCTYPE(P)			    POSIX Programmer's Manual				WCTYPE(P)

NAME
       wctype - define character class

SYNOPSIS
       #include <wctype.h>

       wctype_t wctype(const char *property);

DESCRIPTION
       The wctype() function is defined for valid character class names as defined in the current
       locale. The property argument is a string identifying a generic character class for  which
       codeset-specific  type  information is required. The following character class names shall
       be defined in all locales:

	  alnum 		       digit			    punct
	  alpha 		       graph			    space
	  blank 		       lower			    upper
	  cntrl 		       print			    xdigit

       Additional character class names defined in the locale definition file (category  LC_CTYPE
       ) can also be specified.

       The  function shall return a value of type wctype_t, which can be used as the second argu-
       ment to subsequent calls of iswctype().	The wctype() function shall determine  values  of
       wctype_t  according  to	the  rules  of	the coded character set defined by character type
       information in the program's locale (category LC_CTYPE ). The values returned by  wctype()
       shall be valid until a call to setlocale() that modifies the category LC_CTYPE .

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

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       iswctype() , the Base Definitions volume of IEEE Std 1003.1-2001, <wctype.h>

COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable	Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003					WCTYPE(P)


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