Xref: utzoo comp.lang.scheme:1436 comp.sys.ibm.pc:54284
Path: utzoo!utgpu!watserv1!watmath!att!dptg!ulysses!andante!mit-eddie!bu.edu!rpi!zaphod.mps.ohio-state.edu!usc!apple!agate!WEB.berkeley.edu!laba-4ic
From: laba-4ic@WEB.berkeley.edu (byron c go)
Newsgroups: comp.lang.scheme,comp.sys.ibm.pc
Subject: IBM PC XScheme numbers representation?
Message-ID: <1990Jul23.075719.8352@agate.berkeley.edu>
Date: 23 Jul 90 07:57:19 GMT
Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44)
Reply-To: laba-4ic@WEB.berkeley.edu (byron c go)
Organization: University of California, Berkeley
Lines: 23

I got XScheme for the PC today and am relatively pleased with the following
exception...

>(fib 9)
2432
>(fib 10)
-8448

(where fib is defined as (lambda (x) (if (= x 1) 1 (* x (fib (-1+ x))))))

it would seem that there is some kind of overflow error going on here.
does anybody know of a patch to the source code that fixes this?  perhaps
a change in the representation of integers?

thanks,

     byron

-----
byron c go	byron@QAL.berkeley.edu		laba-4ic@web.berkeley.edu
ab econ '92	 ...!ucbvax!QAL!byron		 ...!ucbvax!web!laba-4ic
"Help... I've become the anti-Dan_Kogai!  (I've started writing Scheme code
 and translating it to C for my programming projects!)"		- me