The method Math.tan has a 1 ulp error bound.
Recent work (https://members.loria.fr/PZimmermann/papers/accuracy.pdf) has found a case where the reference implementation of Math.tan has a 1.02 ulp error, which is (slightly) larger than the stated bound. The problematic input is 0x1.3f9605aaeb51bp+21.
The specification should be amended to accommodate the larger observed error bound.
Recent work (https://members.loria.fr/PZimmermann/papers/accuracy.pdf) has found a case where the reference implementation of Math.tan has a 1.02 ulp error, which is (slightly) larger than the stated bound. The problematic input is 0x1.3f9605aaeb51bp+21.
The specification should be amended to accommodate the larger observed error bound.
- csr for
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JDK-8326537 Widen allowable error bound of Math.tan
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- Closed
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- relates to
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JDK-8316708 Augment WorstCaseTests with more cases
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- Resolved
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JDK-8316688 Widen allowable error bound of Math.hypot
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- Resolved
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- links to
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Commit
openjdk/jdk/63f6a563
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Review(master)
openjdk/jdk/17973