DSTEVD Example

To find all the eigenvalues and eigenvectors of the symmetric tridiagonal matrix

A = $\displaystyle \left(\vphantom{
\begin{array}{rrrr}
1 & 1 & 0 & 0 \\
1 & 4 & 1 & 0 \\
0 & 1 & 9 & 1 \\
0 & 0 & 1 & 16
\end{array} }\right.$$\displaystyle \begin{array}{rrrr}
1 & 1 & 0 & 0 \\
1 & 4 & 1 & 0 \\
0 & 1 & 9 & 1 \\
0 & 0 & 1 & 16
\end{array}$$\displaystyle \left.\vphantom{
\begin{array}{rrrr}
1 & 1 & 0 & 0 \\
1 & 4 & 1 & 0 \\
0 & 1 & 9 & 1 \\
0 & 0 & 1 & 16
\end{array} }\right)$,

The example program for DSTEV illustrates the computation of error bounds for the eigenvalues and eigenvectors.

Example program
Example data
Example results