Example Program to calculate Factorial

[Dieter]

(02-02-2018 09:58 PM)Gerson W. Barbosa Wrote:  Try adding EEX as your first step. If it works that’ll make 8 steps. Still pretty good!

PS: It will work only for x=0 and x=1. ...

On the HP25 it also works for other input. This seems to be related to a bug, err... "special feature" that has been discussed earlier: R/S obviously does not terminate number entry so that the EEX is appended to the entered number.

But this only works if you manually type your input. You can't recall it from a register, like [RCL] 2 [R/S]. ;-)

(02-02-2018 09:58 PM)Gerson W. Barbosa Wrote:  I have a dead 29C in front of me and can’t think of anything better than [ x=0 ] [ e^x ], which makes 9 steps.

What about this?

Code:

01  STO 0
02  1
03  x>y?
04  STO 0
05  LBL 0
06  RCL 0
06  x
07  DSZ
09  GTO 0

Same number of steps but a tiny bit faster as no transcendental function is required.

Dieter