Summation based benchmark for calculators

[BobVA]

(12-26-2017 05:43 AM)mfleming Wrote:  

(12-26-2017 03:45 AM)BobVA Wrote:  HP-41CL / x50 speed: 100 iterations (139.2926) 15s

I get something different. 41CL, v5 board, TURBO 50. Using the Sigma+ function to accumulate intermediate values because it has the advantage of returning the index X each invocation. Twelve instructions from the loop header label to the bottom GTO with no instructions other than the 41C/CV/CX defaults:

Nice!

I used the ISG register increment and a STO+ register operation to accumulate the results. (I think it's the first HP-41 code I've written in about 15 years.
Nice diversion to leaf through the manual again, but I probably came up with the slowest imaginable implementation!)