Manpages - 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).

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)

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