WCTYPE
NAME SYNOPSIS DESCRIPTION RETURN VALUE CONFORMING TO SEE ALSO NOTES
wctype - wide character classification
#include 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 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.
isalnum__ classification function
isalpha classification function isblank classification function iscntrl classification function isdigit classification function isgraph classification function islower classification function isprint classification function ispunct classification function isspace classification function isupper classification function isxdigit classification function
The wctype function returns a property descriptor if the name is valid. Otherwise it returns (wctype_t)0.
ISO/ANSI C, UNIX98
iswctype(3)
The behaviour of wctype depends on the LC_CTYPE category of the current locale.
2 pages link to wctype(3):