wctype - wide character classification


SYNOPSIS

       #include <wctype.h>

       wctype_t wctype (const char *name);


DESCRIPTION

       The wctype_t type represents a property which a wide char­
       acter may or may not have. In other words, it represents a
       class of wide characters.  This type's nature is implemen­
       tation  dependent,  but  the  special  value   (wctype_t)0
       denotes  an  invalid property. Nonzero wctype_t values can
       be passed  to  the  iswctype  function  to  actually  test
       whether a given wide character has the property.

       The wctype function returns a property, given by its name.
       The set of valid names depends on the LC_CTYPE category of
       the  current  locale, but the following names are valid in
       all locales.
         "alnum" - realizes the isalnum classification function
         "alpha" - realizes the isalpha classification function
         "blank" - realizes the isblank classification function
         "cntrl" - realizes the iscntrl classification function
         "digit" - realizes the isdigit classification function
         "graph" - realizes the isgraph classification function
         "lower" - realizes the islower classification function
         "print" - realizes the isprint classification function
         "punct" - realizes the ispunct classification function
         "space" - realizes the isspace classification function
         "upper" - realizes the isupper classification function
         "xdigit" - realizes the isxdigit classification function


RETURN VALUE

       The wctype function returns a property descriptor  if  the
       name is valid. Otherwise it returns (wctype_t)0.


CONFORMING TO

       ISO/ANSI C, UNIX98


SEE ALSO

       iswctype(3)


NOTES

       The  behaviour  of wctype depends on the LC_CTYPE category
       of the current locale.


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