Discussion around the Swiss Micros DM42 calculator.
I explained my reasoning for using 68 to Mr. Cornea; he repeated it should be 69 but didn't explain why. Oh well. I made the change and it will be in the next official release (Free42 3.0.1 has my work-around which avoids bid128_hypot() altogether). The patch using 68 isn't bad, of course, if Marius Cornea is right about 69 then my version can potentially lose 1 digit of precision, which is still a lot better than the original which can lose 33. (Or is it 32? Or 34? Aaaah )