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iswalpha (3)
  • iswalpha (3) ( Solaris man: Библиотечные вызовы )
  • iswalpha (3) ( FreeBSD man: Библиотечные вызовы )
  • iswalpha (3) ( Русские man: Библиотечные вызовы )
  • >> iswalpha (3) ( Linux man: Библиотечные вызовы )
  • iswalpha (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    iswalpha - test for alphabetic wide character
     
    

    SYNOPSIS

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

    DESCRIPTION

    The iswalpha() function is the wide-character equivalent of the isalpha(3) function. It tests whether wc is a wide character belonging to the wide-character class "alpha".

    The wide-character class "alpha" is a subclass of the wide-character class "alnum", and therefore also a subclass of the wide-character class "graph" and of the wide-character class "print".

    Being a subclass of the wide-character class "print", the wide-character class "alpha" is disjoint from the wide-character class "cntrl".

    Being a subclass of the wide-character class "graph", the wide-character class "alpha" is disjoint from the wide-character class "space" and its subclass "blank".

    Being a subclass of the wide-character class "alnum", the wide-character class "alpha" is disjoint from the wide-character class "punct".

    The wide-character class "alpha" is disjoint from the wide-character class "digit".

    The wide-character class "alpha" contains the wide-character classes "upper" and "lower".

    The wide-character class "alpha" always contains at least the letters aqAaq to aqZaq and aqaaq to aqzaq.  

    RETURN VALUE

    The iswalpha() function returns non-zero if wc is a wide character belonging to the wide-character class "alpha". Otherwise it returns zero.  

    CONFORMING TO

    C99.  

    NOTES

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

    SEE ALSO

    isalpha(3), iswctype(3)  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


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