RFR: 8338694: x86_64 intrinsic for tanh using libm [v2]

[Srinivas Vamsi Parasa]

On Fri, 13 Sep 2024 23:10:19 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> Hi Joe (@jddarcy),
>> 
>> As suggested by Sandhya (@sviswa7), I added ~750 fixed point tests for tanh in `TanhTests.java` using the quad precision tanh implementation in libquadmath library from gcc. 
>> 
>> Please let me know if this looks good.
>
> @vamsi-parasa In my thoughts the best way to do this is add the additional tests points to HyperbolicTests.java itself in the testcases array of testTanh() method. We should remove all the other changes from HyperbolicTests.java. Also no need for separate TanhTests.java file.

Hi Sandhya(@sviswa7), please see the updated code in `HyperbolicTests.java` which removes the previous random based tests with the new fixed point tests. Also removed the `TanhTests.java`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20657#discussion_r1761642227