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(c) 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(3), iswctype(3)
NOTES
The behaviour of iswcntrl depends on the LC_CTYPE category
of the current locale.
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