I suggest that you consult the C99 standard. 
See: http://www.lysator.liu.se/c/

Perry

<bryan@terran.org> writes:
> I apologize in advance if this is OT, but I've been scouring the 'Net for
> some time and still can't find the answer.  I have been using "intX_t" and
> "u_intX_t" for years in my applications because I believed it was the
> portable thing to do according to POSIX 1003.1.  I have had no problems
> between NetBSD, Linux and HP-UX.   Recently, I discovered that these types
> are not defined anywhere on SunOS 5.6.  Instead, there is "intX_t" (yes,
> the same) and "uintX_t".  These are defined via <inttypes.h>.  Now I see
> that NetBSD, Linux and HP-UX define these as well.  Am I incorrect to use
> the (apparently) old-style "u_intX_t"?  It seems these newer types (via
> <inttypes.h>) are UNIX-98.  I would like to know if this supercedes the
> POSIX types.

-- 
Perry E. Metzger		perry@piermont.com
--
"Ask not what your country can force other people to do for you..."