Summation on HP 42S

[ijabbott]

(09-28-2018 12:33 AM)Thomas Okken Wrote:  Don't get me wrong, optimizers are great when they work, but when they don't, they can cause malfunctions in the weirdest places. Keep in mind that in the greater scheme of things, Free42 is a pretty simple piece of software, where bugs tend to be noticed quickly. I shudder to think what obscure optimizer bugs could do in really complex information systems!

Question is, how do you know the optimizer is at fault? It could be at fault, but more often than not it is invalid assumptions of the programmer that is at fault. (No accusations intended here. I'm just stating the general case.)