Manual Pages  — WCTYPE

iswctype – wide character class functions

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES EXAMPLES SEE ALSO STANDARDS HISTORY

Standard C Library (libc, -lc)

#include <wctype.h>

int
iswctype(wint_t wc, wctype_t charclass);

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

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 iswctype().

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

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