JDK 15 RF(pre)R of JDK-8241374: add Math.absExact

[Brian Burkhalter]

Hi Joe,

> On Mar 30, 2020, at 6:31 AM, Chris Hegarty <chris.hegarty at oracle.com> wrote:
> 
>> Full webrev for review include including tests:
>> 
>>    http://cr.openjdk.java.net/~darcy/8241374.0/ <http://cr.openjdk.java.net/~darcy/8241374.0/>
>> 
>> and the companion CSR:
>> 
>>    https://bugs.openjdk.java.net/browse/JDK-8241805 <https://bugs.openjdk.java.net/browse/JDK-8241805>
> 
> Looks good to me.

Likewise.

> I do like the explanatory paragraph about the asymmetry in the range of two's complement integer values. An alternative, or addition, would be a link to JLS 4.2.1 - Integral Types and Values [1], which shows the asymmetry from a language perspective.

I also like this suggestion.

Brian

> -Chris.
> 
> [1] https://docs.oracle.com/javase/specs/jls/se14/html/jls-4.html#jls-4.2.1 <https://docs.oracle.com/javase/specs/jls/se14/html/jls-4.html#jls-4.2.1>