[PATCH v2] Remove isinf uses that rely on signed return value

[Joseph Myers]

On Fri, 18 Sep 2015, Wilco Dijkstra wrote:

> > Wilco Dijkstra wrote:
> > I found a few more cases where isinf is used to get the signbit. Clean these up to improve the
> > readability and maintainability and allow inlining. Generated code is virtually identical once
> > isinf is inlined using the GCC builtin.
> > 
> > OK for commit?
> 
> Ping

OK.

-- 
Joseph S. Myers
joseph@codesourcery.com