- Performance Analysis:
  Sometimes the answer is simple:
    Sometimes you just need to change the options you are using from the macro:
    - On the last page we saw an example where the speed was being driven by the call to `Math.max(double,double)` in `Logarithm.SS(..)`.
    - If you look back at the macro you will see that `FFT` has been given the `/LOG` switch.
    - A quick check of the explain file for `FFT` shows the following switches:

          /DBF     Compute dB Log output using fast exponent
                   overlay method (good to +-.5 dB)
          /LOG     Output 20log of power spectral density

    - In this case there are two options: the high-precision one (`/LOG`) and the fast one (`/DBF`).
    Sometimes you just need to change the methods you are using in a primitive:
    - Example: The `Table.putAll(..)` method in `Table` has the following warning message:

          This method is slower than using merge(Keyable)
          when given a KeyVector or a Table in KV mode.

  Sometimes the answer is not simple:
    Sometimes a faster algorithm is required.
    Sometimes the computation just can't be done any quicker.