Stalled Patches

[Feng Wang]

 --- Paul Brook <paul@codesourcery.com> µÄÕýÎÄ£º> On Friday 02 April 2004
12:51, Joost VandeVondele wrote:
> > It has nothing to do with the accuracy of the math libraries, the question
> > is if the constant needs to be converted to real*4 before
> > assignment in
> >
> > real*8 x=1.7
> >
> > as done in most compilers, or if it is OK to assign the real*8
> > approximation.
> 
Right. I once added the conversion to gfortran and got the same result with
those commercial compilers.

> Ah, I see. I think the GMP->tree conversion is the wrong place to be doing 
> this, so the patch is still ok.
> 
> The frontend doesn't accurately model the target floating point arithmetic,
> so 
> there are probably other places where we may have excess precision or 
> incorrect rounding.
I think this is one of reasons causing gfortran not to pass SPEC2K 200.

Feng Wang

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