RFR: 8368822: Refactor Float16.valueOf(double) [v2]

[Raffaello Giulietti]

On Sun, 28 Sep 2025 21:08:53 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> Refactoring to express the code more in terms of symbolic concepts rather than raw constants.
>
> Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add overflow and underflow constants.

Looks good

-------------

Marked as reviewed by rgiulietti (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27540#pullrequestreview-3279943093