redhat man page for wctype

WCTYPE(3)						     Linux Programmer's Manual							 WCTYPE(3)

NAME
       wctype - wide character classification

SYNOPSIS
       #include <wctype.h>

       wctype_t wctype(const char *name);

DESCRIPTION
       The  wctype_t  type represents a property which a wide character may or may not have. In other words, it represents a class of wide charac-
       ters.  This type's nature is implementation dependent, but the special value (wctype_t)0 denotes an invalid property. Nonzero wctype_t val-
       ues can be passed to the iswctype function to actually test whether a given wide character has the property.

       The  wctype  function returns a property, given by its name. The set of valid names depends on the LC_CTYPE category of the current locale,
       but the following names are valid in all locales.
	 "alnum" - realizes the isalnum classification function
	 "alpha" - realizes the isalpha classification function
	 "blank" - realizes the isblank classification function
	 "cntrl" - realizes the iscntrl classification function
	 "digit" - realizes the isdigit classification function
	 "graph" - realizes the isgraph classification function
	 "lower" - realizes the islower classification function
	 "print" - realizes the isprint classification function
	 "punct" - realizes the ispunct classification function
	 "space" - realizes the isspace classification function
	 "upper" - realizes the isupper classification function
	 "xdigit" - realizes the isxdigit classification function

RETURN VALUE
       The wctype function returns a property descriptor if the name is valid. Otherwise it returns (wctype_t)0.

CONFORMING TO
       ISO/ANSI C, UNIX98

SEE ALSO
       iswctype(3)

NOTES
       The behaviour of wctype depends on the LC_CTYPE category of the current locale.

GNU
								    1999-07-25								 WCTYPE(3)