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From "Vladimir Gorr" <vvg...@gmail.com>
Subject Re: ITC's java.math package contribution
Date Fri, 21 Apr 2006 00:30:36 GMT
Hi Daniel,

indeed it makes sense to compare the performance both implementations of
java.math package
using the real applications. If you have any results could you plase to make
them public?
I want to look at them. Besides I'd pefer to slightly correct you about the
SVN repository already contains full implemenation of the java.math package
for Java 1.5 (please look at the HARMONY-380 issue for details).

Thanks,
Vladimir Gorr
Intel Middleware Products Division.


On 4/21/06, Daniel Fridlender <dfridlender@gmail.com> wrote:
>
> Dear all,
>
> on behalf of ITC I have updated our contribution of the package
> java.math including some recent optimizations (HARMONY-199).  I think
> it  would be interesting to compare our implementation with the one
> donated by Intel (HARMONY-39).  In order to do that, it would be nice
> to have a collection of applications were the package is used.
>
> So far, we have tried both implementations with a realistic
> application (RSA key generation) and our implementation turned out to
> have a significantly better performance.
>
> Another point is that we implemented the full 1.5 API functionality,
> which in the case of BigDecimal amounts to having about twice as many
> methods as in the 1.4.2 API.  This may have little significance now,
> but it will definitely be important when Harmony moves to 1.5
>
> Our implementation uses 1.5 syntax since the 1.5 API includes an Enum
> (RoundingMode).
> It should be easy to obtain a 1.4.2 implementation of the 1.4.2 API from
> it.
>
> Some more information about our development can be found at
> http://www.fitc.unc.edu.ar/javadev/math/
>
> Daniel Fridlender
>
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