fvec_quadratic_peak_mag method
finds magnitude of peak by quadratic interpolation
See Quadratic Interpolation of Spectral Peaks, by Julius O. Smith III
\param x vector to get the magnitude of the interpolated peak position from
\param p index of the peak in vector x
\return magnitude of interpolated peak
Implementation
double fvec_quadratic_peak_mag(
ffi.Pointer<fvec_t> x,
double p,
) {
return _fvec_quadratic_peak_mag(
x,
p,
);
}