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 charac-
ters. This type's nature is implementation-dependent, but the special
value (wctype_t) 0 denotes an invalid property. Non-zero wctype_t val-
ues 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 cur-
rent locale.
iswctype(3)
This page is part of release 3.05 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)