RFR: JDK-8316708: Augment WorstCaseTests with more cases [v2]

[Joe Darcy]

> 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.

Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:

  Add stated error bounds.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15879/files
  - new: https://git.openjdk.org/jdk/pull/15879/files/57b112cd..3b5fc48c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15879&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15879&range=00-01

  Stats: 27 lines in 1 file changed: 27 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15879.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15879/head:pull/15879

PR: https://git.openjdk.org/jdk/pull/15879