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WCTYPE(3) Linux Programmer's Manual WCTYPE(3)
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.
C99.
The behavior of wctype() depends on the LC_CTYPE category of the current
locale.
iswctype(3)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
GNU 1999-07-25 WCTYPE(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface