Torture tests: what do they mean?

[Jim Horn]

Alan Sultan's CORDIC article is a fine introduction. It misses one important simplification, though - instead of multiplying the result of the rotations by K, you can start with (K,0) as the initial vector. Then *no* multiplication is needed other than the binary shifts and adds. This was covered in the HP Journal article on the HP35 algorithms. Pretty nifty!