RFR: 8366478: BigDecimal roots [v4]

[Joe Darcy]

On Fri, 17 Oct 2025 16:23:58 GMT, Raffaello Giulietti <rgiulietti at openjdk.org> wrote:

> OK, so let's go with the truncated division for now, since `sqrt()` delegates to `ntRoot()`. As for the name, shall we replace it with `rootn()`?

In this case, I do think "rootn()" is probably the better name.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27148#discussion_r2443803392