[PATCH] Remove __isinf uses that rely on signed return value

[Joseph Myers]

On Tue, 2 Jun 2015, Wilco Dijkstra wrote:

> The printf code contains a few uses of __isinf where the sign is used - 
> replace these with separate isinf and signbit.

Why?  Isn't the point of glibc's isinf returning a signed value that you 
can do such combined operations?

I'd also really recommend separating safe cleanups that don't change the 
stripped installed shared libraries at all (other than assertion line 
numbers), such as moving to use the type-generic macros internally, from 
any other changes that might affect the installed binaries.  And when 
something shouldn't change the (stripped) installed binaries, verify that 
it doesn't, and state the platform on which you did such verification.

-- 
Joseph S. Myers
joseph@codesourcery.com