f02awf

f02awf © Numerical Algorithms Group, 2002.

Purpose

F02AWF All eigenvalues of complex Hermitian matrix (Black Box)

Synopsis

[r,ifail] = f02awf(ar,ai<,ifail>)

Description

 
 The complex Hermitian matrix A is first reduced to a real 
 tridiagonal matrix by n-2 unitary transformations, and a 
 subsequent diagonal transformation. The eigenvalues are then 
 derived using the QL algorithm, an adaptation of the QR 
 algorithm.

Parameters

f02awf

Required Input Arguments:

ar (:,:)                              real
ai (:,:)                              real

Optional Input Arguments:                       <Default>

ifail                                 integer  -1

Output Arguments:

r (:)                                 real
ifail                                 integer