iswcntrl — test for control wide character
#include <wctype.h>
int
iswcntrl( |
wint_t | wc) ; |
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.
The iswcntrl
() function
returns non-zero if wc
is a wide character
belonging to the wide-character class "cntrl". Otherwise it
returns zero.
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