iswcntrl()

Test for a control wide character

Synopsis:

#include <wctype.h>

int iswcntrl( wint_t wc );

Library:

libc

Description:

The iswcntrl() function tests if the argument wc is a control wide character of the class cntrl. In the C locale, they are: ASCII characters 0 and 31 inclusive.

Returns:

=/= 0: The character is a member of the class cntrl.
0: Everything else.

Classification:

ANSI

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes

Caveats:

The result is valid only for char arguments and WEOF.