(RPL) percentage function % not preserving stack level 2

[cdmackay]

(01-06-2019 06:16 AM)RMollov Wrote:  DUP is not double ENTER, it is just another name for a single ENTER. Not a big deal to hit it quickly twice
IMHO the RPN implementation of those %-functions is better done (more consistent) in RPL. LASTARG loads both operands in the stack pushing previous result up, which is AFAIC the desired way of doing it; with RPN you have first operand in Y - visible, the second in L - invisible and result in X. [X<>Y] & [LastX] (3 keystrokes) will be needed to mimic what LASTARG achieves with 2. On the other hand I have no clue how and what for you use them, so my views may not be applicable in your case, just sharing ideas.

Thanks! I think that DUP does act as a double ENTER, as Joe notes.

Yes, I wasn't familiar with LASTARG. Amusingly, I'm so used to Ans on algebraic calculators that I didn't realise that it must do something different for RPN/RPL where it's obviously not needed. Using it for LASTARG is great.

Agreed that it's more flexible than the RPN route; I tended only to use Y, rather than X, after the % so the fact that X was only in LASTX wasn't a problem. But yes, better to have both.

thanks again for the ideas.