frac32 in
int32.positive Multiply
int32.positive Divide
frac32 out
int64_t ratio;
if (inlet_Divide) {
float inf = inlet_Divide << 21;
ratio = ((int)(281474976710656.f / inf) * inlet_Multiply) >> 6;
} else
ratio = 1 << 27;
outlet_out = ___SMMUL(ratio << 3, inlet_in << 2) * 64;