Linux cli command iswcntrl

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command iswcntrl and provides detailed information about the command iswcntrl, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the iswcntrl.

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NAME 🖥️ iswcntrl 🖥️

test for control wide character

LIBRARY

Standard C library (libc, -lc)

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).

InterfaceAttributeValue

iswcntrl()

Thread safetyMT-Safe locale

STANDARDS

C11, POSIX.1-2008.

HISTORY

POSIX.1-2001, C99.

NOTES

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

SEE ALSO

iscntrl(3), iswctype(3)

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