wctype manual

wctype - wide-character classification

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

Return Value

The wctype() function returns a property descriptor if the name is valid.
Otherwise, it returns (wctype_t) 0.

Notes

The behavior of wctype() depends on the LC_CTYPE category of the current locale.

LibWchar2 information

Version

libwchar2 0.0.10

Date

Wed Aug 22 2018

Author

(c) PS 2018-2018

Manual author and license

Copyright

GNU Public License version 2. Manual license details