|
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
|
ISWCNTRL(3) Linux Programmer's Manual ISWCNTRL(3)
iswcntrl - test for control wide character
#include <wctype.h>
int iswcntrl(wint_t wc);
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.
The iswcntrl() function returns nonzero if wc is a wide character
belonging to the wide-character class "cntrl". Otherwise, it returns
zero.
For an explanation of the terms used in this section, see
attributes(7).
┌───────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────┼───────────────┼────────────────┤
│iswcntrl() │ Thread safety │ MT-Safe locale │
└───────────┴───────────────┴────────────────┘
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of iswcntrl() depends on the LC_CTYPE category of the
current locale.
iscntrl(3), iswctype(3)
This page is part of release 4.15 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)
Copyright and license for this manual page
|
HTML rendering created 2018-02-02 by Michael Kerrisk, author of The Linux Programming Interface, maintainer of the Linux man-pages project. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH.
|
|