Re: RMCL 5.2 on Snow Leopard: floating point issues

getting closer to WHAT is happening but not WHY. Keep in mind this  
worked on Leopard but not Snow Leopard. I would assume this is has  
something to do with the new version of Rosetta. Here are some  
stunning listener interactions (this is in a Listerner 1 process  
"initial" breaking after the error occurring for the first time  
resulting in float /0 errors):

1 > 3
3
;; OK
1 > 3.0
1.06099791E-315
;; HUH!!!

1 > (setq *read-default-float-format* 'short-float)
SHORT-FLOAT
1 > 3
3
1 > 3.3
0.0
1 > (float 3)
0.0
1 > (+ 4.5 5.5)
0.0

Looks as if ANY kind of float returned is a 0.0

Meanwhile, in the regular listerner things are still working as  
expected.

I am stumped at the moment and would appreciate any pointer or even  
wild guesses on how RMCL could possibly enter this state.

So far I have only seen the problem in process initial but I am not  
sure if this is relevant.

all the best,  Alex






On Oct 14, 2009, at 2:57 PM, Terje Norderhaug wrote:

> On Oct 14, 2009, at 9:15 AM, Alexander Repenning wrote:
>> What kinds of  issues do people have out there with RMCL 5.2 and
>> Snow Leopard (OS X, 10.6.1)?
>>
>> Things almost work here but there are some strange floating point
>> issues (with shorts).
>>
>> At least we get further, ironically, with RCML 5.2 than CCL 1.3
>> which immediately quits. What is the version of CCL one should use
>> to work under OS X 10.6.1?
>
> Are these the same as the problems discussed in issue 8 at
> mcl.googlecode.com?
>
>   http://code.google.com/p/mcl/issues/detail?id=8
>
> Gary made some changes to the floating point functionality, but come
> to think about it, these changes may not have been propagated into
> the distribution yet:
>
>   http://code.google.com/p/mcl/source/detail?
> r=ff3f7eb878e5d61e1a8e83f6d19b3a3ea86de346
>
> -- Terje
> _______________________________________________
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Prof. Alexander Repenning

University of Colorado
Computer Science Department
Boulder, CO 80309-430

vCard: http://www.cs.colorado.edu/~ralex/AlexanderRepenning.vcf

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