eigen_hermv()

void linalg::eigen_hermv	(	int	size,
		std::complex< double > *	A,
		double *	eval,
		std::complex< double > *	evec
	)

Evaluate the eigen set of a given Hermitian matrix \(A\).

Purpose

Evaluate the eigen system of a given Hermitian matrix \(A\), and put the eigen values into "eval" and and the eigen vectors into "evec".

Parameters

size	Size of the matrix \(A\).
A	A Hermitian matrix given as a pointer.
eval	A complex vector into which the eigen values are set. Given as a pointer.
evec	A complex Matrix into which the eigen vectors are set. Given as a pointer.

Definition at line 134 of file linalg_eigen.cpp.

References get_cdmatrix(), get_dvector(), and set_cdmatrix().

                                                                                   {
    cdmatrix A_eigen;
    cdmatrix evec_eigen;   
    dvector eval_eigen;
    set_cdmatrix(n,A,A_eigen);
    Eigen::SelfAdjointEigenSolver<cdmatrix> eigensolver(A_eigen);
    eval_eigen=eigensolver.eigenvalues();
    evec_eigen=eigensolver.eigenvectors();
    get_cdmatrix(n,evec,evec_eigen);
    get_dvector(n,eval,eval_eigen);
}

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