[linuxdc-dev]Re: [linuxsh-dev] Floating point problems - Dreamcast 2.4.10-pre6 kernel

[Adrian M. <ad...@mc...>]

On Friday 28 Dec 2001 2:54 am, NIIBE Yutaka wrote:
> Adrian McMenamin wrote:
>  > costab[k] = 1.0 / (2.0 * cos( 3.14159265358979323846 * ((double) k * 2.0
>  > + 1.0) / (double) divv));
>
> [...]
>
>  > So: the questions are - is this a known problem, has it been fixed in
>  > later kernels or have I just got it wrong?
>
> I don't know if this is related, we have a FPU bug wrt floating point
> to double conversion.  For example, compiling runtime of Java, GCC
> fails because of exception.
>
> I have experimental fix for this issue, I'll send this to linuxsh-dev
> soon.

Just to close this. I rebuilt my tools and upgraded to gcc 3.0.3 and now the 
programme compiles and runs fine.

Not sure what the problem was exactly - could have been a badly patched 
compiler, could have been a corrupted library - but it works now.

Adrian