I sometimes use my HP32S for simple calculations on complex numbers, thanks to the CMPLXxxx functions. However, I always regret the lack of CMPLXx<>y, CMPLXenter and CMPLXx^2. CMPLXx<>y can be easily done with RDN RDN (here, RDN means "R-Down-Arrow"). CMPLXx^2 could be done with CMPLXenter CMPLX*, if CMPLXenter was only existing.

Are you able to find a simple sequence that simulate CMPLXenter? (I mean a sequence which duplicates the complex number in x,y to z,t)

I just found a simple way after years of research (I'm hardly joking ...). So I'm curious to know if some of you are more clever than I was to find a solution.

I will post my solution in a few days.