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From Mauro Talevi <mauro.tal...@aquilonia.org>
Subject Re: [math] math 1.1 RCs and FCS
Date Fri, 14 Oct 2005 10:36:02 GMT
Phil,

Phil Steitz wrote:
> 
> 
> There are two open bugs holding up the release:
> http://issues.apache.org/bugzilla/show_bug.cgi?id=37019 (trivial)
> http://issues.apache.org/bugzilla/show_bug.cgi?id=37086 (requires some work)
> 
> I will try to get these sorted this weekend.  Patches, feedback
> welcome!  Any [math] committers out there, pls review mails and bug
> report on Complex classes and weigh in so we can resolve and get the
> release out.

Thanks for the update. Bugzilla server is down ATM.
But I've been following the issue 37019.
It's still not 100% clear what the "correct" scenario is:
should or should the NaNs have an impact on the result?
Two comments you made seem slightly inconsistent.

One:
"The general policy in [math] is to use NaN consistently with floating
point arithemtic specs (IEEE 754 for real, C99x Annex G for complex
arithmetic) so for statistics such as Sum, Mean, etc. that involve
arithmetic computations, NaN values force the return value to be NaN."

Two:
"This is definitely a bug, as the javadoc indicates clearly that NaN 
values should have no impact on the result:
"The result is NaN iff all values are NaN (i.e. NaN values have no 
impact on the value of the statistic)."
"

Could you clarify please? Is the javadoc wrong or the impl?

> We created a release branch once the contents of the 1.1 release were
> fixed.  That branch is MATH_1_1.  The svn trunk version includes some
> numerical analysis enhancements that will not be included in 1.1. 
> That's why the trunk version says 1.2

That's fine, but I guess what I was also asking is whether you have
a policy of releasing jars labeled 1.1-rc-* (I haven't been able to find
them) or only the final release.

Cheers


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