HP49-50G: help for recursive

[DavidM]

(02-06-2024 01:29 PM)Gil Wrote:  I want to have max =x, yes, but
with the following 2 conditions:

- only for the first initial input value of x (afterwards, x is tranformed to a new x at each recursive loop)
- and only in the THEN condition for x was fulfilled before (if first IF test never gave THEN once, then max should not exist)

Apologies, my suggestion was based on the small snippet you showed, not as a result of studying the previous posts.

A quick perusal showed me that I'm not likely to understand what you're actually trying to solve here with the limited time that I can apply to it at present. I'll just make a couple of general observations:

• Compiled locals only make sense to use if you want to reference a local from a program that doesn't also contain that local's instantiation (-> command). Otherwise just create a normal local, perhaps at a higher scope level within that same program.
• Instead of checking for the existence of the local variable, could you STO 0 into it (before the first recursive call) to imply that no value has yet been stored? If so, it would simplify the check by allowing you to treat max as a boolean as well as the max x value. "IF max THEN...ELSE...END" would process the ELSE clause iff max=0, otherwise the THEN clause applies. That obviously wouldn't work if max=0 could occur with the normal processing of x values. I honestly don't know if that is appropriate here, though.