iswctype, wctype -- wide character class functions
Standard C Library (libc, -lc)
iswctype(wint_t wc, wctype_t charclass);
wctype(const char *property);
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 special
alpha digit lower punct upper
blank graph phonogram space xdigit
The iswctype() function checks whether the wide character wc is in the
character class charclass.
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
Reimplement iswalpha(3) in terms of iswctype() and wctype():
return (iswctype(wc, wctype("alpha")));
The iswctype() and wctype() functions conform to IEEE Std 1003.1-2001
(``POSIX.1''). The ``ideogram'', ``phonogram'' and ``special'' character
classes are extensions.
The iswctype() and wctype() functions first appeared in FreeBSD 5.0.
FreeBSD 5.2.1 October 3, 2002 FreeBSD 5.2.1 [ Back ]