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 non-zero 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.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
