Basic RPL question

[rprosperi]

(02-25-2016 03:05 PM)Graan Wrote:  Just started to do some programming on my HP48GX and got into trouble that is probably very basic:

I have 3 global variables (KP,KI and KD) I want to use in a program but first want to convert them to local variables (kp, ki and kd):

1) Bring the global variables to stack
2) store as local variables -> kp ki kd

This is what I tried (and some other unsuccessful attempts):

<<
KP KI KD
-> kp ki kd
<<
do something
>>
>>

Your idea looks correct; what does not work, or what error did you get, etc.? The code fragment shown is not enough to understand the problem. Generally though, one would recall the global variables to the stack in the calling program, not within the program that is processing them locally.