WCTYPE(3)                                                    Linux Programmer's Manual                                                   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 charac-
       ters.  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.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +----------+---------------+----------------+
       |Interface | Attribute     | Value          |
       +----------+---------------+----------------+
       |wctype()  | Thread safety | MT-Safe locale |
       +----------+---------------+----------------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, C99.

NOTES

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

SEE ALSO

       iswctype(3)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU                                                                 2015-08-08                                                           WCTYPE(3)