regression in tgamma?

[Keith Packard]

Jeff Johnston <jjohnstn@redhat.com> writes:

> I am also seeing inf instead of -inf for both tgamma and tgammaf in my
> testing.

Yeah, looks like there are quite a few fixes in picolibc that I haven't
had time to send over to newlib.

I've also fixed a bunch of exception problems when compiling with clang,
which is happy to evaluate expressions known at compile time, even
though that doesn't generate exceptions at runtime. (things like 'return
one/zero;')

I've also generated tests for return values, exceptions and errnos for
the math functions to make sure they match the relevant specs and also
match glibc (mostly as a way to check the tests).

Anyone is welcome to pull those fixes out of picolibc and get them into
newlib; I probably won't have time for a while.

-- 
-keith
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