iswctype - wide-character classification

       For an explanation of the terms used in this section, see attributes(7).
       ┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                                                                   │ Attribute     │ Value   │
       ├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │ iswctype()                                                                  │ Thread safety │ MT-Safe │
       └─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘

       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), then 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.

       POSIX.1-2001, C99.

       Standard C library (libc, -lc)

       iswctype - wide-character classification

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

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

iswalnum(3), iswalpha(3), iswblank(3), iswcntrl(3), iswdigit(3), iswgraph(3),  iswlower(3),  iswprint(3),
       iswpunct(3), iswspace(3), iswupper(3), iswxdigit(3), wctype(3)

Linux man-pages 6.9.1                              2024-05-02                                        iswctype(3)

       C11, POSIX.1-2008.

#include<wctype.h>intiswctype(wint_twc,wctype_tdesc);