Copyright: Thomas Rode / DL1DUZ
Release: 0.2
09/05/2012

Class FFTdata

public class FFTdata

Provides a set of arrays in the BigInteger format to perform FFT operations.
 
Constructor:

FFTdata(int FFTpower, int MaxDigits)

Arrays declared as "global": "RealArray" to keep the real data. "ImagArray" to keep the imaginary data.

Parameter: "FFTpower" specifies the length of the arrays as 2^FFTpower. "MaxDigits" specifies the precision of the input
           data by giving the maximum number digits to be expected. This parameter is used by the FFT to calculate the
           sine table data with the appropirate precision. As an example, if the biggest number in the arrays is 9999,
           "MaxDigits" should be 4.

Throws: "IllegalArgumentException" for "FFTpower"<2 or "MaxDigits"<1.
 
Methods:

 public int getLength()
   Returns 2^FFTpower.

 public int getPower()
   Returns FFTpower.

 public int getPrecision()
   Returns the calculated precision. This method is used by the FFT.