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
