JDK-8316708 : Augment WorstCaseTests with more cases
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.lang
  • Affected Version: 22
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2023-09-22
  • Updated: 2025-10-22
  • Resolved: 2024-03-01
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JDK 23
23 b13Fixed
Related Reports
Relates :  
JDK-8332066 - AArch64: Math test failures since JDK-8331558
Relates :  
JDK-8370370 - Add still more cases to WorstCaseTests
Relates :  
JDK-8229259 - Math.hypot result not always within 1 ulp of exact result
Relates :  
JDK-8331558 - AArch64: optimize integer remainder
Relates :  
JDK-8326530 - Widen allowable error bound of Math.tan
Relates :  
JDK-8327487 - Further augment WorstCaseTests with more cases
Description
A new paper 

 "Accuracy of Mathematical Functions in Single, Double, Double Extended, and Quadruple Precision"
by Brian Gladman, Vincenzo Innocente and Paul Zimmermann

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.
Comments
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/15879 Date: 2023-09-22 05:36:02 +0000
17-10-2024
Changeset: 7f02f07f Author: Joe Darcy <darcy@openjdk.org> Date: 2024-03-01 19:30:35 +0000 URL: https://git.openjdk.org/jdk/commit/7f02f07f754c942735ba15d70858cd1661a658c0
01-03-2024
High-precision math library results computed with http://www.apfloat.org/calculator/.
28-02-2024