wctype(3)
NAME
wctype - wide-character classification
SYNOPSIS
#include <wctype.h> wctype_t wctype(const char *name);
DESCRIPTION
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.
CONFORMING TO
C99.
NOTES
The behavior of wctype() depends on the LC_CTYPE category of the current locale.
SEE ALSO
COLOPHON
- This page is part of release 3.25 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/.