git: openjdk/jdk16u: 8253409: Double-rounding possibility in float fma

[Joe Darcy]

Changeset: b7470f48
Author:    Joe Darcy <darcy at openjdk.org>
Date:      2021-02-25 20:44:54 +0000
URL:       https://git.openjdk.java.net/jdk16u/commit/b7470f48

8253409: Double-rounding possibility in float fma

Backport-of: e5304b3a994b1e291e4ac5258f473dd7874f163f

! src/java.base/share/classes/java/lang/Math.java
! test/jdk/java/lang/Math/FusedMultiplyAddTests.java