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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(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.

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
       C99.

NOTES
       The behavior of iswcntrl() depends on the LC_CTYPE category of the current locale.

SEE ALSO
       iscntrl(3), iswctype(3)

COLOPHON
       This page is part of release 3.22 of the Linux man-pages project.  A description of the project,  and  informa-
       tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



GNU                               1999-07-25                       ISWCNTRL(3)