RFR: 8366478: BigDecimal roots [v25]

[Raffaello Giulietti]

On Mon, 27 Oct 2025 15:34:33 GMT, fabioromano1 <duke at openjdk.org> wrote:

>> An implementation of `BigDecimal.nthRoot(int, MathContext)`.
>
> fabioromano1 has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update method name in comments

At some point we also need good whitebox tests, possibly covering all the code paths.
Further, an update of the CSR with the new name is needed as well.

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PR Comment: https://git.openjdk.org/jdk/pull/27148#issuecomment-3452238915