newRPL - build 1255 released! [updated to 1299]

[BarryMead]

(01-09-2018 03:49 PM)Claudio L. Wrote:  It uses an approximated method, so they should all be approximated. But sometimes the numerical method might converge exactly to the value after some iterations. Since the iterations use divisions, any number that has factors of 2 and 5 can be represented exactly. I didn't check in detail every iteration, but if the method has all exact divisions for a certain number it's final result will be exact.

That explains the behavior of the square root function, but why does the XROOT function return better more accurate answers? If the square root function were implemented as a call to XROOT with the second parameter fixed at 2 it would behave as expected. I wrote my own SQRT function like this that works better than the built-in one.
« 2 XROOT » 'SQRT' STO