DSBEVX Example

To find the eigenvalues in the half-open interval $ \left(\vphantom{-3, 3}\right.$ -3, 3$ \left.\vphantom{-3, 3}\right]$, and the corresponding eigenvectors, of the symmetric band matrix

A = $\displaystyle \left(\vphantom{
\begin{array}{rrrrr}
1 & 2 & 3 & 0 & 0 \\
2...
...3 & 4 & 5 \\
0 & 4 & 4 & 4 & 5 \\
0 & 0 & 5 & 5 & 5
\end{array} }\right.$$\displaystyle \begin{array}{rrrrr}
1 & 2 & 3 & 0 & 0 \\
2 & 2 & 3 & 4 & 0 \...
... 3 & 3 & 3 & 4 & 5 \\
0 & 4 & 4 & 4 & 5 \\
0 & 0 & 5 & 5 & 5
\end{array}$$\displaystyle \left.\vphantom{
\begin{array}{rrrrr}
1 & 2 & 3 & 0 & 0 \\
2...
...3 & 4 & 5 \\
0 & 4 & 4 & 4 & 5 \\
0 & 0 & 5 & 5 & 5
\end{array} }\right)$.

Example program
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