User-defined functions in Free42

[Albert Chan]

(01-11-2021 04:47 AM)Thomas Okken Wrote:  The number of inputs and outputs could be parameterized pretty easily. Since neither can be greater than four, all possibilities could be expressed with a two-digit number, so the syntax could be, say, FUNC 31 for 3 inputs, 1 output. I see no reason not to allow all 25 possibilities.

Why do we need to specify number of inputs ?
I thought the goal is to return original stack, except for the outputs.

Since the stack is tiny, is it better to save them all ?
Then, we specify number of outputs to return.
Program may have branch that return 2 outputs, another branch just 1.

Example, say LBLS = Label, but save all stacks

LBLS "TEST"
+
*
÷
RTN1 ; only 1 return, restore the rest.