Arctangent function program [HP-42S, Free42]

[Thomas Klemm]

(09-21-2024 05:31 PM)Albert Chan Wrote:  Slightly improved Thomas code

Nice.
But please note that the reason for the following lines is that operations like X↑2 or R↑ are missing on the HP-12C:

Code:

42 ENTER            ; t     t       2t
43 ×                ; t^2   2t

Therefore I avoided them to make a translation easier.
And with this of course goes all the arithmetic stack operations.
What about DSE, you may ask.
As often this is left as an exercise to the reader.