ISWCNTRLSection: Linux Programmer's Manual (3)
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NAMEiswcntrl - test for control wide character
#include <wctype.h> int iswcntrl(wint_t wc);
DESCRIPTIONThe 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".
RETURN VALUEThe iswcntrl() function returns nonzero if wc is a wide character belonging to the wide-character class "cntrl". Otherwise, it returns zero.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
|iswcntrl()||Thread safety||MT-Safe locale|
CONFORMING TOPOSIX.1-2001, POSIX.1-2008, C99.
NOTESThe behavior of iswcntrl() depends on the LC_CTYPE category of the current locale.
SEE ALSOiscntrl(3), iswctype(3)
COLOPHONThis 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/.
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