iswcntrl - test for control wide character


   #include <wctype.h>

   int iswcntrl(wint_t wc);


   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.


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


   For  an  explanation  of  the  terms  used   in   this   section,   see

   Interface   Attribute      Value          
   iswcntrl()  Thread safety  MT-Safe locale 


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


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


   iscntrl(3), iswctype(3)


   This page is part of release 4.09 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

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