(And implicit about which don't.)
p4raw-id: //depot/cfgperl@5157
64-bit clean, they are explictly forced to be 32-bit because of
tangled backward compatibility issues. This limitation is subject to
change. Bit arithmetics for bit vector scalars (created by vec()) are
-not limited in their width.
+not limited in their width, you can use the & | ^ ~ operators on such
+scalars.
Last but not least: note that due to Perl's habit of always using
floating point numbers the quads are still not true integers.