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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.

CONFORMING TO

       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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