sparc64 fmulq emulation glitch?

[Rene Rebe <rene@exactcode.de>]

Hi all,

during some testing I accidently found fmulq that I think is emulated by
the kernel for this CPU type:

cpu             : TI UltraSparc II  (BlackBird)
fpu             : UltraSparc II integrated FPU

to not yield the corrent results for powers of two in the range [-8,+8] . For
example this tiny example:

int main ()
{
        long double a = 2;
        long double b = 1.0;
        a *= b;
        printf ("%Lf\n", a);
}

built with: gcc -m64 -mhard-quad-float

yields: 4

I tried to get thru the kernel code but have not yet garsped
all the macro magic ... Maybe someone has an idea?

(Kernel is 2.6.17-rc6)

Yours,

-- 
René Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
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