kicad-developers team mailing list archive
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Re: Internal PCB Units?
Wed, 16 Dec 2009 13:24:05 -0000
--- In kicad-devel@xxxxxxxxxxxxxxx, Werner Almesberger <werner@...> wrote:
> Of course, no matter what you do, it's only a question of time until
> you hit a perversion you still can't cleanly represent. E.g., if you
> pick a 100 nm quantum, things like 507.8 mil or 182.9 mil raise
> interesting questions about rounding.
Ofcourse, we should take 20 nm (GCD for 0.1mil and 1mm) or less quantum to keep current accuracy. We may take 1 nm quantum to make KiCad accurate enough for some decades (and for chip design:)).
Only analytic number representation can remove rounding problem completely.:)