On Dec 21, 2012, at 4:18, Thomas Neidhart <thomas.neidh...@gmail.com> wrote:

> On Thu, Dec 20, 2012 at 11:26 AM, Gilles Sadowski <
> gil...@harfang.homelinux.org> wrote:
>
>> Hi.
>>
>> Please have a look at the next candidate (RC5), and vote for the release
>> of Commons Math 3.1.
>>
>> ----------
>> Tag:
>>  https://svn.apache.org/repos/asf/commons/proper/math/tags/MATH_3_1_RC5/
>>
>> Site:
>>  http://people.apache.org/builds/commons/math/3.1/RC5/
>>
>> Binaries:
>>
>> https://repository.apache.org/content/repositories/orgapachecommons-052/org/apache/commons/commons-math3/3.1/
>>
>> [ ] +1 Release it.
>> [ ] +0 Go ahead; I don't care.
>> [ ] -0 There are a few minor glitches: ...
>> [ ] -1 No, do not release it because ...
>>
>> This vote will close in 72 hours.
>> ----------
>
> Hi,
>
> this is not yet my vote, just a request for clarification.
>
> I checked again the Clirr errors, and there are still the two related to
> the probability method in LogNormal and NormalDistribution.
>
> In 3.0, there was a method with only 1 parameter, which always returned 0.
> Now there is a probability method with two parameters, which is defined in
> the implemented interface AbstractRealDistribution.
>
> You mentioned that this is a false positive, but I doubt this. Maybe the
> probability method was never used, but then it should at least be mentioned
> in the release notes.
>
> Sorry to be pedantic about this.

Clirr lists 7 errors, so strictly speaking it does not looks like 3.1
is binary compatible with 3.0. I see these options:

1) document 3.1 as not BC. This is not what we usually do in Commons.
2) fix the clirr errors in the code. This is the safe option.
3) make this a 4.0 releases and change the packages and maven
coordinates. This seems like a high price and likely not what the
[math] community intends for a real 4.0.

Gary


>
> Thomas

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