RFR: 8367603: Optimize exact division in BigDecimal [v24]

[fabioromano1]

On Mon, 27 Oct 2025 19:50:46 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> fabioromano1 has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Respond to review feedback
>
> src/java.base/share/classes/java/math/BigDecimal.java line 1794:
> 
>> 1792:         if (this.signum() == 0) // 0/y
>> 1793:             return zeroValueOf(preferredScale);
>> 1794:         else {
> 
> The old algorithm has relatively few paths through it for different arguments.
> 
> Do the existing test cases provide adequate coverage of the new set of code paths?

I think they do, @rgiulietti do you think the test coverage is adequate?

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PR Review Comment: https://git.openjdk.org/jdk/pull/27271#discussion_r2472693270