wctype(3) BSD Library Functions Manual wctype(3)
NAME
iswctype, iswctype_l, wctype, wctype_l -- 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);
#include <wctype.h>
#include <xlocale.h>
int
iswctype_l(wint_t wc, wctype_t charclass, locale_t loc);
wctype_t
wctype_l(const char *property, locale_t loc);
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.
Although the iswctype() and wctype() functions use the current locale,
the iswctype_l() and wctype_l() functions may be passed locales directly.
See xlocale(3) for more information.
RETURN VALUES
The iswctype() function returns non-zero if and only if wc has the prop-
erty 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), xlocale(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
Mac OS X 10.8 - Generated Sat Sep 1 06:29:20 CDT 2012