Question

Division by invariant integers using multiplication examples

Answer 1

For example, version 1.02 of the IBM RS/6000 xlc and xlf compilers uses the integer multiply instruction to ex- pand signed integer divisions by 3, 5, 7, 9, 25, and 125, but not by other odd integer divisors below 256, and never for unsigned division. We assume an N–bit two's complement architecture.