ultrix man page for iswctype

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

NAME
       iswctype - wide-character classification

SYNOPSIS
       #include <wctype.h>

       int iswctype(wint_t wc, wctype_t desc);

DESCRIPTION
       If wc is a wide character having the character property designated by desc (or in other words: belongs to the character class designated by
       desc), the iswctype() function returns nonzero.  Otherwise, it returns zero.  If wc is WEOF, zero is returned.

       desc must be a character property descriptor returned by the wctype(3) function.

RETURN VALUE
       The iswctype() function returns nonzero if the wc has the designated property.  Otherwise, it returns 0.

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

       +-----------+---------------+---------+
       |Interface  | Attribute     | Value   |
       +-----------+---------------+---------+
       |iswctype() | Thread safety | MT-Safe |
       +-----------+---------------+---------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C99.

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

SEE ALSO
       iswalnum(3), iswalpha(3), iswblank(3), iswcntrl(3), iswdigit(3), iswgraph(3), iswlower(3), iswprint(3),  iswpunct(3),  iswspace(3),  iswup-
       per(3), iswxdigit(3), wctype(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                                                         ISWCTYPE(3)