RFR: 8366478: BigDecimal roots [v20]

[Joe Darcy]

On Sun, 26 Oct 2025 21:05:53 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:
> 
>   Code optimization

src/java.base/share/classes/java/math/BigDecimal.java line 2320:

> 2318:                 }
> 2319: 
> 2320:                 if (increment)

Per coding conventions, please add {} around `root = root.add(1L)`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27148#discussion_r2464417970