hg: jdk/sandbox: 8230074: Improve specification for {Math, StrictMath}.negateExact

[chris.hegarty at oracle.com]

Changeset: 3da1848cc39b
Author:    darcy
Date:      2019-08-28 22:30 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/3da1848cc39b

8230074: Improve specification for {Math, StrictMath}.negateExact
Reviewed-by: bpb

! src/java.base/share/classes/java/lang/Math.java
! src/java.base/share/classes/java/lang/StrictMath.java