[Coco] Nitros9 C and maths lib

[James Jones]

Virtual FPU device? Is that documented? How much state information does it
keep around?

On Mon, Jun 10, 2019 at 2:24 AM Walter Zambotti <zambotti at iinet.net.au>
wrote:

> I have converted my raytrace program to use the virtual FPU device in OVCC.
>
>
>
> It improves performance by around 50 times.
>
>
>
> As I was no longer using any function (pow,sin,cos) from the standard
> mlib.l
> library I removed it from the link and it links without any issue however
> the floating point maths computations are all zero!!!
>
>
>
> This seems strange.  Why would I need to include a library that is no
> longer
> referenced?
>
>
>
> So if I use either of these two compile commands:
>
>
>
> cc -A raytrace.c -l=/dd/lib/mlib.l -m=8k
>
>
>
> or
>
>
>
> cc -A raytrace.c -m=8k
>
>
>
> Both compile and link without error however only the former produces
> correct
> output.
>
>
>
> Walter
>
>
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