Re: [BUG] lua 5.2 luai_hashnum bug with threads

[Oliver Kroth <oliver.kroth@...>]

you may consider to always run the Lua state with the same FPU precision 
settings.
This would frexp() operate consistently in both threads.

-- Oliver
> 'luai_hashnum'  FAILS to generate a DETERMINISTIC hash value for identical keys when executed non-concurrently on separate threads.
>
> It is the fault of different precision controls being set on different threads, one of which is automatically set to 24 bits when using DirectX without
> the D3DCREATE_FPU_PRESERVE flag.  (But not strictly limited to DX, anyone wanting to increase floating point performance
> with the sacrifice of precision).