Re: [hatari-devel] FPU trig functions emulation accuracy?

[Thorsten Otto <admin@xxxxxxxxxxx>]

On Sonntag, 6. Dezember 2020 00:05:36 CET Eero Tamminen wrote:

> Was there ever effort to fix trig errors reported

> by Douglas test tool?

 

I don't know how douglas's tools work (especially, how does it qualify results of random data as correct or not?), but Toni Willen and me have gone through great details to verify a lot of test cases.

 

Note also the especially the trig functions produce slightly different results on real hardware, depending on FPU type. So in order to determine whether a result is correct or not, you will need at least a printout of the input values that were used, the expected result, and the actual result.