iswcntrl

ISWCNTRL(3)                 Linux Programmer's Manual                ISWCNTRL(3)



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.



GNU                               July 25, 1999                      ISWCNTRL(3)