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 iscn-
       trl(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 nonzero if wc is a wide  character  be-
       longing  to  the  wide-character  class "cntrl".  Otherwise, it returns
       zero.

ATTRIBUTES
       For an  explanation  of  the  terms  used  in  this  section,  see  at-
       tributes(7).

       +-----------+---------------+----------------+
       |Interface  | Attribute     | Value          |
       +-----------+---------------+----------------+
       |iswcntrl() | Thread safety | MT-Safe locale |
       +-----------+---------------+----------------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C99.

NOTES
       The behavior of iswcntrl() depends on the LC_CTYPE category of the cur-
       rent locale.

SEE ALSO
       iscntrl(3), iswctype(3)

COLOPHON
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       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.

GNU                               2015-08-08                       ISWCNTRL(3)