Often the naive method is all right as you aren’t really concerned by the fact that numbers close to zero don’t have the maximum precision possible – particular

Often the naive method is all right as you aren’t really concerned by the fact that numbers close to zero don’t have the maximum precision possible – particularly when your use case has a certain "native scale" and what amounts to a fixed point approach works fine. And especially if the results are going to be discretized at some point anyway (eg. computer graphics).