Optimization bug with floating-point?

[Steve Kargl]

On Tue, Mar 12, 2019 at 07:45:41PM -0700, Steve Kargl wrote:
> 
> cc -O -fno-builtin -o z a.c -lm && ./z
> cc -O2 -fno-builtin -o z a.c -lm && ./z
> cc -O3 -fno-builtin -o z a.c -lm && ./z
> 
> 
> Max ULP: 23.061242
> Count: 39          (# of ULP that exceeds 21)
> 

These results do not change if one uses /usr/local/bin/clang60.

-- 
Steve