On 5 January 2016 at 13:11, Sarah Armstrong
<sarahj.armstron...@gmail.com> wrote:
> or
> 999,999,999,999,999,967,336,168,804,116,691,273,849,533,185,806,555,472,917,961,779,471,295,845,921,727,862,608,739,868,455,469,056.00

You wouldn't want to get anywhere near this limit, though.

The real practical limit is the number of significant figures in the
floating-point format (about 16). The difference between 1e99 and the
next smallest representable number is about 10^83 complete
revolutions.

For a 90:1 rotary and a 4096 count encoder you have an angular
resolution of 3.5 arc seconds. or .0.001 degrees. After only
99999999999 degrees the double precision format can no longer
discriminate between numbers one encoder count apart. A fairly fast
rotary could get there in less than 100 years.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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