hp prime - using stack in program

[bagriff]

I want to do a simple macro style program. To simplify, say I have a number in the 'x' register of the stack. I want to press a key and do a few steps of math on that value. Such as, multiple it by a number, subtract a number. I don't see how this is done on this calculator. The other HP RPN calculators made this very easy.

[BartdB]

Hi,

Unfortunately you can't write RPN style programs on the Prime, only HP Prime Basic programs.

For example if you have two values on the stack the following program will return the division of the values:

EXPORT PROG1(A,B)
BEGIN
RETURN A/B;
END;

Note that currently only one value can be returned to the stack. You can return multiple values in a list, but not on separate stack levels.

[bagriff]

This seems to just prompt for an input, it doesn't take the value from the stack

[BartdB]

That happens when you run it from the program menu. If you run it from the HOME screen (type PROG1 then ENTER) it will take values from the stack and return the answer. It can also be run from the Home screen by pressing Toolbox then User softkey then select PROG1, press ENTER with empty ().

[bagriff]

Thanks, that helps a lot. Doesn't seem like a lot of this stuff is documented.