Re: Using floating point calculations in kernel module (x86/amd64)

Hi,

> Even if by the nowadays standard ot seems strange, I suspect that you have no hard floating point support in you processor.
> In fact __adddf3 and __muldf3 seem to be a soft implementation for floating point add and multiply support, while __floatunsidf is related to int to float conversions.
> They are services provided at a very low level, possible at the compiler one.to emulate floating point
> RTAI has found a similar problem  in supporting complex math at the kernel level.
> I solved it by  using what made available by LLVM.ORG, but the functions I needed rely on the availability of a hard FPU support for add/mul/div. A fact that may the matter far simpler.
> Yours, instead, seem at the core of the basic FPU emulation, which is another matter.

The kernel build system includes building for softfloat. I will try your 
suggestions.

Thanks for your informations.

regards

    W. Holzke

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