This is the mail archive of the
mailing list for the GCC project.
Re: Simplify floating point conversions II
> > On Wed, Nov 06, 2002 at 06:54:41PM +0100, Jan Hubicka wrote:
> > > + For fast math it would be safe probably to convert (float)sqrt(x)
> > (double)((float)a + (float)b)
> > where A = B = 2**127. The result should be +Inf, not 2**128.
> I am doing that only when the mode of + is wider.
> > Finally, I think it is alarmingly incorrect that
> > (float)((double)a + (double)b))
> > does not result in a quantity of type float, as requested.
> Here I do that. When a and b are floats, I will produce
> is that wrong?
I see, you were shooting for something like
(float)((long double)a + (long double)b)
for a and b being double. That will result in (a+b) not casted to float
that is wrong. I am adding recursive call to convert_to_real when this
> > r~