Function ewt 

pub fn ewt(signal: &Signal<f64>, config: &EWTConfig) -> Result<EWTResult>

Decompose signal into adaptive Meyer sub-bands via EWT.

Errors

• WaveletError::SignalTooShort for signals of length < 4.
• WaveletError::NumericError if any input sample is non-finite.
• WaveletError::InvalidParameter if max_bands == 0, if a SpectrumPreproc field is out of range, if a BoundaryDetection::Manual boundary falls outside (0, 2π · (n / 2) / n) (= (0, π) for even n, (0, π·(n−1)/n) for odd n) or boundaries are not strictly increasing, or if GammaStrategy::Fixed violates Eq. 8.