Transform methods
This package provides a few transformers for signal analysis. All transformers provide both direct and inverse transforms.
- FastFourierTransformer (produces 
Complexresults) - FastCosineTransformer (produces real results)
 - FastSineTransformer (produces real results)
 - FastHadamardTransformer (produces real results)
 
 Hipparchus::Fast Fourier Transforms