NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Integer-only celestial navigation in C99
From: Frank Reed
Date: 2026 Jul 20, 06:17 -0700
From: Frank Reed
Date: 2026 Jul 20, 06:17 -0700
Could you tell us more about what you mean by "integer only"? From a certain perspective, celestial navigation calculations were always integer only. In mathematical computation, this would usually be termed "fixed point arithmetic". Especially in the "Age of Sail" navigators were working spherical trigonometry problems by adding up five or six-sigit logarithms. When you see the work on paper, they're doing plain addition of five or six-digit integers.
Could you tell us more about your project?
Frank Reed
