Subject: Re: Math Library
Date: Sun, 29 May 1994 00:34:34 -0400 (EDT)
From: Lamar Milligan <lamarm@moe.coe.uga.edu>

On Sat, 28 May 1994, MiKE wrote:

> 
> On Fri, 27 May 1994, MR. R.L.COLLIER wrote:
> > can one of you guys be more specific on where in the amninet this library is
 as I would very much like to get it!!
>  aminet: util/libs (I think)
> 
> For those that care, I ran the benchmarks for the libraries on my a1200
> (4Mb Fast,'881 co-pro, vanilla '020)
> I'll just list the total times (in seconds) , as it does about 15 different
> functions 
> The old versions of my libraris were 37.1 as supplied with WB3.0
> The new libraries are v40.3
> 
> 					before		after
> mathdoubtranstest			208.38s		184.87s	
> (tests mathsieeedoubtrans.library)     
> 
> mathsingtrantest			142.08		120.49
> 
> mathtranstest				591.97		143.82
> 
> 
> The speedups in the mathdoubtranstest and the mathsingtest were almost
> toatlly due to speed up in the 'pow' function. (which I asume is powers).
> 					before		after
> 	ie mathdoubtrans     DPPow	44.65		24.02
> 	   mathsingtrans     SPPow	27.49		5.61
> 
> Would anyone with knowledge of how these functions relate to ray-tracing
> algorithms, please tell me whether I can expect any decrease in rendering
> times with these improvements.  I suspect that only the doubtrans library
> is important and that the Pow function is not heavily used with ray
> tracing;  so overall I don't expect better Imagine render times.
> 
> (I only have the INT version from AF, so I can't test render times)
> 
> MiKE
>    cheng@sun.mech.uq.oz.au  The Uni of Queensland. Brisbane. Australia   
>             "I don't stand on ceremony; he never stood on me." 
> 
> 
> 
	Better yet, could someone post some -rendering- times with 
before-and-after figures?  This would be of much more practical use.
I assume these libraries are for use on any 1200 or higher Amiga?
		Benjamin Milligan
		lamarm@moe.coe.uga.edu


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