HP-UX 11i March 2002 Release Notes

New and Changed Internationalization Features
Multibyte Support Extension and Unix98 Support
Chapter 15
258
fputwc(), putwc(), putwchar()
The type of first argument is changed from wint_t to wchar_t.
freopen()
Regardless of the mode of underlying stream, after a successful call to the freopen()
function, the orienting of the stream is cleared and the associated mbstate_t object is
set to describe an initial conversion state.
wcschr(), wcsrchr()
The type of second argument is changed from wint_t to wchar_t.