RFR: 8343829: Unify decimal and hexadecimal parsing in FloatingDecimal [v6]

[Shaojin Wen]

On Fri, 2 May 2025 12:00:13 GMT, Raffaello Giulietti <rgiulietti at openjdk.org> wrote:

>> See the JBS bug for some details.
>
> Raffaello Giulietti has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains nine additional commits since the last revision:
> 
>  - Remove unused BIG_DECIMAL_EXPONENT
>  - Merge branch 'master' into 8343829
>  - Merge branch 'master' into 8343829
>  - Redacted comments.
>  - Merge branch 'master' into 8343829
>  - Minors in comments.
>  - Removed repeated comment.
>  - Refactoring some code and comments.
>  - 8343829: Unify decimal and hexadecimal parsing in FloatingDecimal

We can do some cleanup before this PR, such as #24999

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PR Comment: https://git.openjdk.org/jdk/pull/22737#issuecomment-2847085253