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From Phil Steitz patch submission for Issue #20175
The attached patch includes the following improvements to Univariate and
UnivariateImpl:
* Improved efficiency of min, max and product maintenance when windowSize is
limited by incorporating suggestion posted to commons-dev by Brend Worden
(added author credit). Thanks, Brent!
* Added javadoc specifying NaN contracts for all statistics, definitions for
geometric and arithmetic means.
* Made some slight modifications to UnivariateImpl to make it consistent with
NaN contracts
* All interface documentation moved to Univariate. The interface specification
includes the NaN semantics and a first attempt at clealy defining exactly
what "rolling" means and how this effects what statistics are defined when.
* Added test cases to verify that min, max, product are correctly maintained
when "rolling" and to verify that NaN contracts are satisfied.
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jakarta/commons/proper/math/trunk/project.xml