RFR: 8352585: Add special case handling for Float16.max/min x86 backend [v6]

[Jatin Bhateja]

On Fri, 28 Mar 2025 22:14:23 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> Basically assert if one is NaN and other is not.
>
> On further thought what you have also works. Though we could simplify the assertionCheck method to just one statement:
> public static boolean assertionCheck(Float16 actual, Float16 expected) {
>    return !actual.equals(expected);
> }
> This is because, the equals method takes care of NaNs. The [equals](https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/lang/Double.html#equals(java.lang.Object)) uses [representation equivalence](https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/lang/Double.html#repEquivalence), defining NaN arguments to be equal to each other.

DONE

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PR Review Comment: https://git.openjdk.org/jdk/pull/24169#discussion_r2023172099