wctype

NAME

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 character may or may not have. In other words, it represents a class of wide characters. This type's nature is implementation-dependent, but the special value (wctype_t) 0 denotes an invalid property. Nonzero wctype_t values can be passed to the iswctype(3) 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(3) classification function
   "alpha" - realizes the isalpha(3) classification function
   "blank" - realizes the isblank(3) classification function
   "cntrl" - realizes the iscntrl(3) classification function
   "digit" - realizes the isdigit(3) classification function
   "graph" - realizes the isgraph(3) classification function
   "lower" - realizes the islower(3) classification function
   "print" - realizes the isprint(3) classification function
   "punct" - realizes the ispunct(3) classification function
   "space" - realizes the isspace(3) classification function
   "upper" - realizes the isupper(3) classification function
   "xdigit" - realizes the isxdigit(3) classification function
 

RETURN VALUE

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

CONFORMING TO

C99.

NOTES

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

SEE ALSO

iswctype(3)

COLOPHON

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