JDK 9 RFC on 6667086: Double.doubleToLongBits(final double value) contains inefficient test for NaN

[Paul Sandoz]

On Jan 15, 2014, at 10:28 PM, Brian Burkhalter <brian.burkhalter at oracle.com> wrote:

> Issue:	https://bugs.openjdk.java.net/browse/JDK-6667086
> Webrev:	http://cr.openjdk.java.net/~bpb/6667086/webrev/
> 
> According to micro-benckmarks, there is no statistically significant performance change due to applying this patch but the code definitely looks cleaner.
> 

Looks OK.

I would hope at least the generated machine code from your updated method would be simpler.

In a comment of the bug there are some optimizations proposed to other methods (Math.nextAfter/nextUp), might be useful to fix those too or capture in another bug if the intention is to evaluate?

Paul.