HP-42s Entering 4 complex numbers on the stack

[J-F Garnier]

(05-28-2023 09:42 AM)Vincent Weber Wrote:  A common reproach made to the 42S is that its complex numbers implantation, while being one the best, does not allow to enter 4 complex numbers on the stack in the row, since 2 stack levels are needed to create a complex number (as opposed to the 15c which has a parallel imaginary stack, or to the 35S that allows one-line entry).

Yes, and this little annoyance is made worst by the fact that COMPLEX saves the X content into LaxtX, which is not only useless since X is not lost but also prevents to use LastX as an auxiliary register to input these 4 complex values.

BTW, I'm one of the few who see the HP-32S/32SII way to enter a complex value on the stack (imag part first, then real part) much more natural on a RPN machine, than the algebraic order of the 42S.

J-F