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    Command:

    iswcntrl

    
    
    

    SYNOPSIS

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

    DESCRIPTION

           The  iswcntrl()  function is the wide-character equivalent of the iscn-
           trl(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

       Multithreading (see pthreads(7))
           The iswcntrl() function is thread-safe  with  exceptions.   It  can  be
           safely  used  in multithreaded applications, as long as setlocale(3) is
           not called to change the locale during its execution.
    
    
    

    CONFORMING TO

           C99.
    
    
    

    NOTES

           The behavior of iswcntrl() depends on the LC_CTYPE category of the cur-
           rent locale.
    
    
    

    SEE ALSO

           iscntrl(3), iswctype(3)
    
    
    

    GNU 2014-02-10 ISWCNTRL(3)

    
    
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