compare different FFT implementations
generating input signals
initializing FFTW
duration: 637.193
Armadillo FFT:
duration: 4.37427
convolution:
duration: 471.615
Armadillo FFT-Pow2-convolution:
duration: 7.50905
maximum difference of result: 0.0197754
FFTW FFT-Pow2-convolution:
duration: 0.528795
maximum difference of result: 0.020142
Armadillo FFT-convolution:
duration: 390.823
maximum difference of result: 0.0200195
Armadillo convolution:
duration: 487.721
maximum difference of result: 0