[
https://issues.apache.org/jira/browse/MATH-863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13460340#comment-13460340
]
Luc Maisonobe commented on MATH-863:
------------------------------------
Let's wait for Juliens's tests and adjust the javadoc accordingly.
We may end up having some classes supporting non-commutative fields and other
requiring commutative fields and just state that in the doc, or we may add a
CommutativeField marker interface which would extend Field, or we could add a
isCommutative method in the Field interface and check that were needed. I'm not
sure the Java typing mechanism is sufficient, so either simple documentation or
runtime checks may be helpful.
If the test does not work at all and since your other example show it doesn't
work either, then we could simply improve the interface javadoc saying that it
only supports commutative fields.
> 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_adjustments.patch, quaternion.patch,
> quaternion_v2.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
> hypercomplex 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 advance
> for my mistakes…)
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
