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(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
       belonging to the wide-character class "cntrl".  Otherwise, it returns
       zero.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(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
       current locale.

SEE ALSO
       iscntrl(3), iswctype(3)

COLOPHON
       This page is part of release 5.02 of the Linux man-pages project.  A
       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)