HP Prime complex division problem in CAS

[parisse]

As for maxnorm on complex numbers, this is intended. For exact data computing a square root (L2 norm) is costly (or even impossible if the integer is too large to be factored), while |z| defined as|x|+|y| is also a norm (L1 norm) and much faster to compute (O(1)).
Linf norm could works as well.