RFR: JDK-8316708: Augment WorstCaseTests with more cases

[Joe Darcy]

On Fri, 22 Sep 2023 05:36:02 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> A new paper
> 
>  "Accuracy of Mathematical Functions in Single, Double, Double Extended, and Quadruple Precision"
> by Brian Gladman, Vincenzo Innocente and Paul Zimmermann
> https://members.loria.fr/PZimmermann/papers/accuracy.pdf
> 
> details the inputs with generate the worst-case observed errors in different math library implementations. The FDLIBM-related worst cases should be added to the test suite.

Upon further reflection, I think it is worthwhile to include the worst-case tests from the more of the other math library implementations to better test potential intrinsifications of the various methods.

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PR Comment: https://git.openjdk.org/jdk/pull/15879#issuecomment-1961898103