iswcntrl(3) -- Linux man page

 

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 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 non-zero if wc is a wide character belonging to the wide character class "cntrl". Otherwise it returns zero.  

CONFORMING TO

ISO/ANSI C, UNIX98  

SEE ALSO

iscntrl(3), iswctype(3)  

NOTES

The behaviour of iswcntrl depends on the LC_CTYPE category of the current locale.