3.18 iswcntrl—control wide character test

Synopsis

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

Description
iswcntrl is a function which classifies wide-character values that are categorized as control characters.

Returns
iswcntrl returns non-zero if c is a control wide character.

Portability
iswcntrl is C99.

No supporting OS subroutines are required.