RFR: 8370057: Correct scale handling of BigDecimal.sqrt

[Raffaello Giulietti]

On Fri, 17 Oct 2025 23:10:30 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> Correct scale handling of BigDecimal.sqrt to conform to IEEE 754.

In the test, starting [here](https://github.com/jddarcy/jdk/blob/2393649538a1fc33801d50c257b4e8dbeb2f821b/test/jdk/java/math/BigDecimal/SquareRootTests.java#L555), there's a comment about an algorithm presented in a paper.

Is it still relevant?

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PR Review: https://git.openjdk.org/jdk/pull/27882#pullrequestreview-3356358011