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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Calculators, cosines, and floating point computation
From: Tony Oz
Date: 2019 Jun 3, 02:43 -0700
From: Tony Oz
Date: 2019 Jun 3, 02:43 -0700
Dear Frank, thanks for the article.
When mentioning the "forensics" results I actually meant this table.
Because the CN topic is relatively new to me - I fell into the very "lore-drivenness" of internet in relation to the Haversines vs Cosines. However I have my own experience with this "lore-drivenness" - when I was fine-tuning my carburetor I stumbled across lots and lots of copy-pasted rubbish originating from one very old FIDONET post. Indeed this is a problem.
Now to Cosines: this very same problem became apparent to me when I attempted to create an eye-pleasing NatHav table and its' "floating point" spin-off. To keep the resolution near 180° end I had to invent the "floating nines".
Regards,
Tony
60°N 30°E
