iswcntrl - test for control wide character

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

       The iswcntrl() function is the wide-character equivalent of the iscntrl(3) function.  It tests whether wc
       is a wide character belonging to the wide-character class "cntrl".

       The  wide-character  class  "cntrl"  is disjoint from the wide-character class "print" and therefore also
       disjoint from its subclasses "graph", "alpha", "upper", "lower", "digit", "xdigit", "punct".

       For an unsigned char c, iscntrl(c) implies iswcntrl(btowc(c)), but not vice versa.

       POSIX.1-2001, C99.

       Standard C library (libc, -lc)

       iswcntrl - test for control wide character

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

       The iswcntrl() function returns nonzero if wc is a wide character belonging to the  wide-character  class
       "cntrl".  Otherwise, it returns zero.

iscntrl(3), iswctype(3)

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

       C11, POSIX.1-2008.

#include<wctype.h>intiswcntrl(wint_twc);