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    Command:

    iswdigit

    
    
    

    SYNOPSIS

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

    DESCRIPTION

           The  iswdigit()  function  is  the  wide-character  equivalent  of  the
           isdigit(3) function.  It tests whether wc is a wide character belonging
           to the wide-character class "digit".
    
           The  wide-character  class  "digit" is a subclass of the wide-character
           class "xdigit", and therefore also a  subclass  of  the  wide-character
           class  "alnum",  of  the  wide-character class "graph" and of the wide-
           character class "print".
    
           Being a subclass of the wide character class "print", the  wide-charac-
           ter class "digit" is disjoint from the wide-character class "cntrl".
    
           Being  a subclass of the wide-character class "graph", the wide-charac-
           ter class "digit" is disjoint from the wide-character class "space" and
           its subclass "blank".
    
           Being  a subclass of the wide-character class "alnum", the wide-charac-
           ter class "digit" is disjoint from the wide-character class "punct".
    
           The wide-character class "digit" is disjoint  from  the  wide-character
           class  "alpha" and therefore also disjoint from its subclasses "lower",
           "upper".
    
           The wide-character class "digit" always contains exactly the digits '0'
           to '9'.
    
    
    

    RETURN VALUE

           The  iswdigit()  function  returns  nonzero  if  wc is a wide character
           belonging to the wide-character class "digit".   Otherwise  it  returns
           zero.
    
    
    

    CONFORMING TO

           C99.
    
    
    

    NOTES

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

    SEE ALSO

           isdigit(3), iswctype(3)
    
    
    

    GNU 1999-07-25 ISWDIGIT(3)

    
    
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