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Re: [PATCH] [Bug middle-end/33187] Missed cmove opportunity

On 8/28/07, Paolo Bonzini <bonzini@gnu.org> wrote:

> >> double sgn (double __x)
> >> {
> >>   return __x >= 0.0 ? 1.0 : -1.0;
> >> }
> >
> > For this testcase with -ffast-math, can't we just do copysign (1.0, __x) ?
>
> No, because -0.0 >= 0.0

Even with -ffast-math? IIRC, there [are | should be] no signed zeros
with fast math.

Uros.
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