Path: utzoo!attcan!uunet!cs.dal.ca!iisat!promac
From: promac@iisat.UUCP (Promac Systems)
Newsgroups: comp.sys.amiga.tech
Subject: Lattice 5.02 floating point
Message-ID: <6@iisat.UUCP>
Date: 26 May 89 02:09:14 GMT
Distribution: na
Organization: International Information Service, Dart., NS
Lines: 16

I seem to be having a problem with accessing the 68881 directly in my 2500.
I have been in contact with Lattice and just got an ear full of static. The
problem seems to be in a few of the functions(ie log(xx)) gives me an answer
that is way off of what it should be(where xx stands for a floating point #).
ie. I run the savage benchmark using lc -fi -Lm, and I get an answer of 
    about 2.5E+04. I also get the same answer when using the normal math librari    -es. But when I access the 68881 by using the m68881.h header and -f8
    option on the compiler I get an answer of 3.483E+308???????

I have also tried to recompile DBW-Render and QRT with this option and they
just crash when they hit the math chip.

Any suggestions?? I tried the above examples with MANX and all is well.

later
Barry Comer                 
promac@iisat.UUCP