freebsd man page for wctype

WCTYPE(3)						   BSD Library Functions Manual 						 WCTYPE(3)

NAME
     iswctype, wctype -- wide character class functions

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wctype.h>

     int
     iswctype(wint_t wc, wctype_t charclass);

     wctype_t
     wctype(const char *property);

DESCRIPTION
     The wctype() function returns a value of type wctype_t which represents the requested wide character class and may be used as the second
     argument for calls to iswctype().

     The following character class names are recognised:

	   alnum   cntrl   ideogram   print   space   xdigit
	   alpha   digit   lower      punct   special
	   blank   graph   phonogram  rune    upper

     The iswctype() function checks whether the wide character wc is in the character class charclass.

RETURN VALUES
     The iswctype() function returns non-zero if and only if wc has the property described by charclass, or charclass is zero.

     The wctype() function returns 0 if property is invalid, otherwise it returns a value of type wctype_t that can be used in subsequent calls to
     iswctype().

EXAMPLES
     Reimplement iswalpha(3) in terms of iswctype() and wctype():

	   int
	   myiswalpha(wint_t wc)
	   {
		   return (iswctype(wc, wctype("alpha")));
	   }

SEE ALSO
     ctype(3), nextwctype(3)

STANDARDS
     The iswctype() and wctype() functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').  The ``ideogram'', ``phonogram'', ``special'', and
     ``rune'' character classes are extensions.

HISTORY
     The iswctype() and wctype() functions first appeared in FreeBSD 5.0.

BSD
								  March 27, 2004							       BSD