Re: Hashing on System.Address

[Matthew Heaney <matthewjheaney@earthlink.net>]

Robert A Duff <bobduff@shell01.TheWorld.com> writes:

> "Matthew Heaney" <mheaney@on2.com> writes:
> > Use System.Storage_Elements.To_Integer to convert the address to an
> > Integer_Address, and then convert that to type Hash_Type.
> 
> It might be a good idea to divide that by 8, since most addresses have
> zeros in the low three bits.

Good idea.  The other thing I haven't really figured out is what to do
if you have a 64-bit address, and Hash_Type is only 32.  Ideally you'd
like to compute a 32-bit hash value that uses all 64 bits of the
address.

Alternatively, you could use the ordered container, since type
System.Address has a less than ("<") relational operator.