wctype - wide-character classification
#include <wctype.h>
wctype_t wctype(const char *name);
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 characters. This
type's nature is implementation-dependent, but the special value
(wctype_t)
0 denotes an invalid property. Nonzero
wctype_t values can be
passed to the
iswctype(3) 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(3) classification function
"alpha" - realizes the isalpha(3) classification function
"blank" - realizes the isblank(3) classification function
"cntrl" - realizes the iscntrl(3) classification function
"digit" - realizes the isdigit(3) classification function
"graph" - realizes the isgraph(3) classification function
"lower" - realizes the islower(3) classification function
"print" - realizes the isprint(3) classification function
"punct" - realizes the ispunct(3) classification function
"space" - realizes the isspace(3) classification function
"upper" - realizes the isupper(3) classification function
"xdigit" - realizes the isxdigit(3) classification function
The
wctype() function returns a property descriptor if the
name is
valid. Otherwise, it returns
(wctype_t) 0.
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| wctype () |
Thread safety |
MT-Safe locale |
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of
wctype() depends on the
LC_CTYPE category of the
current locale.
iswctype(3)