RFR: 6506405: Math.abs(float) is slow

[Rémi Forax]

On Wed, 7 Jul 2021 20:28:37 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> Please consider this change to make the `float` and `double` versions of `java.lang.Math.abs()` branch-free.

Your patch change the semantics, actually
  `Math.abs(Integer.MIN_VALUE) == Integer.MIN_VALUE`
with your patch
  `Math.abs(Integer.MIN_VALUE) == Integer.MAX_VALUE`

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PR: https://git.openjdk.java.net/jdk/pull/4711