RFR: 8318915: Enhance checks in BigDecimal.toPlainString() [v2]

[Raffaello Giulietti]

On Tue, 7 Nov 2023 18:22:08 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Raffaello Giulietti has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Using repeat() instead of loop.
>
> src/java.base/share/classes/java/math/BigDecimal.java line 3518:
> 
>> 3516:             for (int i = 0; i < trailingZeros; i++) {
>> 3517:                 buf.append('0');
>> 3518:             }
> 
> A bit more compact as:
> Suggestion:
> 
>             StringBuilder buf = new StringBuilder(len);
>             buf.append(str);
>             buf.repeat('0', trailingZeros);

More compact and potentially faster.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16457#discussion_r1385435137