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(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 nonzero 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.
SEE ALSO
COLOPHON
- This page is part of release 3.25 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/.