ISWCNTRL(L)         Linux Programmer's Manual         ISWCNTRL(L)



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  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(l)   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(l), iswctype(e)

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



GNU                         1999-07-25                ISWCNTRL(L)