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Date: Wed, 19 Sep 2012 20:28:09 +1100 (NCT)
From: "Julien Anxionnat (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
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Subject: [jira] [Commented] (MATH-863) new Quaternion class added in complex
 package
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    [ https://issues.apache.org/jira/browse/MATH-863?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D134585=
25#comment-13458525 ]=20

Julien Anxionnat commented on MATH-863:
---------------------------------------

Thanks for your comments.

Ok for creating two issues (Precision improvements and new Quaternion class=
), and for all your points.

I'll propose a new .patch asap just concerning the Quaternion.

Yannick (my coworker) will open the discussion about the improvements in th=
e Precision class asap too.
               =20
> new Quaternion class added in complex package
> ---------------------------------------------
>
>                 Key: MATH-863
>                 URL: https://issues.apache.org/jira/browse/MATH-863
>             Project: Commons Math
>          Issue Type: New Feature
>    Affects Versions: 3.1
>            Reporter: Julien Anxionnat
>         Attachments: quaternion.patch
>
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> This patch provides a new class for the mathematical object "Quaternion" =
in the complex package.
> This quaternion is considered as a mathematical object (the Hamilton's hy=
percomplex number).
> Note that it's not a rotation quaternion which has to be a quaternion of =
norm one. Although this feature could be used for a getter in the Rotation =
class.
> This patch provides also some improvements in Precision class : a "double=
 comparison epsilon" and a method to compute relative comparison.
> (Please, note that's it's my first contribution, and I apologize in advan=
ce for my mistakes=E2=80=A6)=20

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