NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

WCTYPE(3)                 Linux Programmer's Manual                WCTYPE(3)

NAME         top

       wctype - wide-character classification

SYNOPSIS         top

       #include <wctype.h>

       wctype_t wctype(const char *name);

DESCRIPTION         top

       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         top

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

ATTRIBUTES         top

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

       ┌──────────┬───────────────┬────────────────┐
       │Interface Attribute     Value          │
       ├──────────┼───────────────┼────────────────┤
       │wctype()  │ Thread safety │ MT-Safe locale │
       └──────────┴───────────────┴────────────────┘

CONFORMING TO         top

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

NOTES         top

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

SEE ALSO         top

       iswctype(3)

COLOPHON         top

       This page is part of release 4.08 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)