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

[NIIBE Y. <gn...@m1...>]

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.
--