iswcntrl

ISWCNTRL(3)                Linux Programmer's Manual               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
       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  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  cur-
       rent locale.



GNU                               1999-07-25                       ISWCNTRL(3)