WCTYPE(3)

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() 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.