Function arpack_ng::eigenvalues

pub fn eigenvalues<F>(
    av: F, 
    n: usize, 
    which: &Which, 
    nev: usize, 
    ncv: usize, 
    maxiter: usize
) -> Result<Array1<Complex64>, Error> where
    F: FnMut(ArrayView1<'_, Complex64>, ArrayViewMut1<'_, Complex64>),