HP49-50G: help for recursive

[DavidM]

(02-06-2024 11:57 AM)Gil Wrote:  « -> x
«
IFERR '<-max' RCL
THEN x ->
<-max
«
»
ELSE DROP
END <-max
»
»

What I then need is the <—max variable outside the IF... THEN... END structure.

Why not simply create <-max at the same time you create x? It appears that you initialize the value of <-max to be whatever value x has, so I would think you could change the first line in your code to:
« DUP -> x <-max
...

That way the scope of <-max is now the same as x, which I believe may be what you want here. This keeps you from having to test if <-max exists, since it is now guaranteed to exist everywhere that x exists.