RFR: JDK-8329557: Fix statement around MathContext.DECIMAL128 rounding

[Raffaello Giulietti]

On Tue, 2 Apr 2024 23:43:24 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> Happened to notice a semantic typo in the description of MathContext.DECIMAL128, use of "decimal64" where "decimal128" was intended, and added some additional information to make the related descriptions more informative.

src/java.base/share/classes/java/math/MathContext.java line 106:

> 104:      * rounding mode of {@link RoundingMode#HALF_EVEN HALF_EVEN}.
> 105:      * Note the exponent range of decimal128 (min exponent of -6143,
> 106:      * max exponent of 6144) is <em>not</em> used for rounding.

The exponent ranges are all correct, but... why mention them in the first place if they are not used?

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PR Review Comment: https://git.openjdk.org/jdk/pull/18587#discussion_r1549913966