Is There A 39gII Applet or Program yet which does RPN?



#8

Hi,

I was just wondering from the 39gII user community whether anyone has yet attempted to fashion a program or applet which would simulate run-mode RPN on that machine. It seems like it would be a fun project.

Thanks,
Jake


#9

I support Jake's suggestion. To me, HP calculators must have RPN.

cheers,

hpnut in Malaysia


#10

Be aware that an advanced calculator manipuling vectors, matrix, list, local variable as well as private subroutine, symbolic expression is closer to an RPL calculator than an RPN one ! :-)

Edited: 5 Oct 2012, 3:19 a.m.


#11

Long time ago, I wrote in Turbo Pascal an interpreted RPN language wich was a mixt of RPL and Forth

With the powerfull embeded language of the 39gII it is possible to write this. But i see some big limitations about :

- Interactive usage and displaying stack
- Energy cnosumption in this interactive usage
- 39gII language don't allow to use "paramaters per variable" nor pointer
- I don't find such thing as the VTYPE command in the 39gII

If I have some time I will try what it can be do ....

#12

I will have to look at my notes, but I think I have done an RPN program for the 39G once.

#13

I wrote a program for the 39gs that supports basic RPN. About the level of an HP35 or perhaps an HP45.

Don't know that it would work on a 39gII though. If I ever pick up a 39gII I will convert it to that platform.

-Marwan


#14

Hello Maruan,

There is no 39gII app for RPN. The closest I can think of (and I have been using that machine a lot recently) is a series of function(s) that initialize the stack (in a column matrix that has 4 rows representing the stack) and then using other functions to execute math operations and evaluate functions. Each function would return the matrix that simulates the stack. This is a simple approach, but might actually works by using the Pascal-like programming language of the machine.

Namir


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