Mail Archives: geda-user/2015/09/13/19:14:29
On Sep 13, 2015, at 5:00 PM, DJ Delorie <dj AT delorie DOT com> wrote:
>
>>> Also, most rational vectors do not have a rational magnitude.
>>
>> If you have a Pythagorean triple (x, y, h), x^2+y^2==h^2, it
>> represents an angle arctan(y/x).
>
> Except that h is typically *not* an integer. Once you go off-integer,
> you hit the FPU precision problem, because in the FPU all numbers are
> on a "grid”.
It is if (x, y, h) is a Pythagorean triple. By definition. https://en.wikipedia.org/wiki/Pythagorean_triple
John Doty Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com
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