NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON 

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

NAME         top

       iswcntrl - test for control wide character

SYNOPSIS         top

       #include <wctype.h>
       int iswcntrl(wint_t wc);

DESCRIPTION         top

       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         top

       The iswcntrl() function returns nonzero if wc is a wide character
       belonging to the wide-character class "cntrl".  Otherwise, it returns
       zero.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌───────────┬───────────────┬────────────────┐
       │Interface  │ Attribute     │ Value          │
       ├───────────┼───────────────┼────────────────┤
       │iswcntrl() │ Thread safety │ MT-Safe locale │
       └───────────┴───────────────┴────────────────┘

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008, C99.

NOTES         top

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

SEE ALSO         top

       iscntrl(3), iswctype(3)

COLOPHON         top

       This page is part of release 4.12 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)

Pages that refer to this page: isalpha(3),  iswctype(3)