Complex Division with Prescaling of Operands.

(eng) We adapt the radix-$r$ digit-recurrence division algorithm to complex division. By prescaling the operands, we make the selection of quotient digits simple. This leads to a simple hardware implementation, and allows correct rounding of complex quotient. To reduce large prescaling tables required for radices greater than $4$, we adapt the bipartite-table method to multiple-operand functions