Re: declare 64 bit integers?

(message (Hello 'jrwats@xxxxxxxxx)
(you :wrote :on '(Thu, 27 Sep 2007 04:09:24 -0000))
(

j> I'm writing a chess program using rotate bitboards (64 bit integers)
j> (http://en.wikipedia.org/wiki/Bitboard) . Anyways, I'm competing
j> against some people writing the program in Java and C++, and I want to
j> top them when I get mine all compiled. So I know you can declare
j> fixnums (28-bit), but is there any way to declare 64-bit integers to
j> get compiled LISP running super fast?

i'm afraid it won't run "super fast" (if you mean using directly machine
registers/CPU instructions) on any available implementation.
you can pick one -- for example, SBCL -- and ask developers if it's possible
to extend compiler to suport this stuff.

if you are not aiming for "absolutely fast" you can check bit vectors etc..

check what it does in disassembly, in any way..

)
(With-best-regards '(Alex Mizrahi) :aka 'killer_storm)
"Hanging In The Balance Of Deceit And Blasphemy")


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