over the various <tt/Int/ types defined here.
<item>
+Right and left shifts by amounts greater than or equal to the width of
+the type result in either zero or -1, depending on the sign of the
+value being shifted. This is contrary to the behaviour in C, which is
+undefined; a common interpretation is to truncate the shift count to
+the width of the type, for example <tt>1 << 32 == 1</tt> in some
+C implementations.
+
+<item>
Hugs does not provide <tt/Int64/ at the moment.
</itemize>