AriCalculator is a home made pocket calculator.

[Paul Dale]

I thought the choice of CORDIC was more to do with it being tiny to implement and reusable between many transcendental functions. Polynomial and rational approximations tend to require a lot of constants. They also require repeated multiplications which could hurt performance, so it is believable that this was involved in the decision.

Newton's method for square root requires a division per iteration, but each iteration should double the number of correct digits. In other words, it converges very quickly if the initial estimate is close enough.


Pauli