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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, 08:08 -0700
From: Tony Oz
Date: 2019 Jun 3, 08:08 -0700
Dear Frank,
You've said:
Apps can do that. :) You just toss in an extended precision library. But a real calculator? I don't think you'll find one!
The author of the "forensics" site mentions that he now meets modern no-name Chinese calculators that do 9°=9°, he thinks/speculates that those are in binary (rather than in more usual BCD) mode with 80-bits registers, which is equivalent to a 24-place precision.
Regards,
Tony
60°N 30°E
