iswcntrl

iswcntrl - test for control wide character

#include <wctype.h>
 I int iswcntrl(wint_t  wc );

The R 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.

The R iswcntrl () function returns non-zero if wc is a wide character belonging to the wide-character class "cntrl". Otherwise it returns zero.

C99.

The behavior of R iswcntrl () depends on the LC_CTYPE category of the current locale.

iscntrl(3), iswctype(3)