RFR: 8325438: Add exhaustive tests for Math.round intrinsics [v9]

[Hamlin Li]

On Mon, 22 Apr 2024 15:51:03 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> @theRealAph out of office, so don't have much time to think this through. But maybe we want both, a slower IR test which ensures we have the desired IR (with random input values), and also a non-IR test that is faster and checks the correct results more exhaustively?
>
> Totally. Then, at least for float, you've got it all.

Thanks. I've added new tests which check full 32 bits range for Float.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17753#discussion_r1575964785