It's basically fixed-point arithmetic[0] applied to base tau. So any integer value x that your computer is actually storing is conceptually the value 2 * pi * x

It's basically fixed-point arithmetic[0] applied to base tau. So any integer value x that your computer is actually storing is conceptually the value 2 * pi * x / 65536. [0]: https://en.wikipedia.org/wiki/Fixed-point_arithmetic https://en.wikipedia.org/wiki/Fixed-point_arithmetic