RFR: 8077587: BigInteger Roots [v78]

[Raffaello Giulietti]

On Wed, 3 Sep 2025 09:47:16 GMT, fabioromano1 <duke at openjdk.org> wrote:

>> src/java.base/share/classes/java/math/MutableBigInteger.java line 2060:
>> 
>>> 2058:                  * Instead of shifting the approximate root into the original range right now,
>>> 2059:                  * we only duplicate its bit length and then refine it with Newton's recurrence,
>>> 2060:                  * using a congruent shifted radicand, in order to avoid computing and
>> 
>> Maybe clarify what "congruent" means here
>
> The way the radicand is determined is specified in the same comment below.

What I mean is that "congruent" usually has a specific mathematical meaning, which is not what is meant here, IIUC.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24898#discussion_r2318445423