iswcntrl - test for control wide character


SYNOPSIS

       #include <wctype.h>

       int iswcntrl (wint_t wc);


DESCRIPTION

       The  iswcntrl function is the wide-character equivalent of
       the iscntrl function. It tests whether wc is a wide  char­
       acter 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   iswcn­
       trl(btowc(c)), but not vice versa.


RETURN VALUE

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


CONFORMING TO

       ISO/ANSI C, UNIX98


SEE ALSO

       iscntrl(3), iswctype(3)


NOTES

       The behaviour of iswcntrl depends on the LC_CTYPE category
       of the current locale.


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