This function is missing on some platforms:
HP-UX 11.00, IRIX 6.5, Solaris 2.6, Interix 3.5.
@item
-On Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
+On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize