`scipy.sparse.linalg._eigen.arpack._arpacklib:dneupd_wrap`

Summary

Internal wrapper for the ARPACK dneupd routine (double precision).

This function is called after dnaupd converges to compute the final eigenvalues and, optionally, the eigenvectors.

state : dict: The final state dictionary from a converged dnaupd run.
rvec : bool: If true, compute and return the eigenvectors in z.
howmny : str: Specifies which eigenvectors to compute ('A' for all, 'S' for selected).
select : ndarray, int32: A logical array specifying which Ritz values to target.
dr : ndarray, float64: On return, contains the real parts of the computed eigenvalues.
di : ndarray, float64: On return, contains the imaginary parts of the computed eigenvalues.
z : ndarray, float64: On return, contains the computed eigenvectors if rvec is true.
sigmar : float: Real part of the shift used in shift-invert mode.
sigmai : float: Imaginary part of the shift used in shift-invert mode.
...: (other array arguments: workev, resid, v, ipntr, workd, workl)