Calculator test

[Thomas Klemm]

(12-08-2024 07:36 AM)C.Ret Wrote:  This observation exactly match how the HP-15C works, except there is no specific command apart setting flag 8 which is the complex-mode toggle or indicator.

The HP-15C does not have a complex data type, so the result can only be determined using flag 8. However, the HP-42S can also calculate with complex numbers in REALRES mode.
In addition, toggling flag 8 clears the imaginary part of the complex numbers in the stack.
The default is different, which is why Darren received an Error 0.

These are subtleties, but I agree they are similar.