iswcntrl(3)

NAME

   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(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.

RETURN VALUE

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

ATTRIBUTES

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

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

CONFORMING TO

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

NOTES

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

SEE ALSO

   iscntrl(3), iswctype(3)

COLOPHON

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