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Example (from Program LA_SYGVX_EXAMPLE)

The results below are computed with $\epsilon = 1.19209 \times 10^{-7}$.
Matrices $A$ and $B$ are the same as in Example 1 for LA_SYGV.

The call:
CALL LA_SYGVX( A, B, W,
3, 'V', VL=-10.0_wp, VU=10.0_wp, M=M, IFAIL=IFAIL )8.1

${\bf W, M}$ and IFAIL on exit:

\begin{displaymath}
\begin{array}{cc} {\bf W} \\
\begin{array}{\vert r\vert} ...
...hline
0 \\ 0 \\ 0 \\ 0 \\ 0 \\
\hline \end{array} \end{array}\end{displaymath}

The only eigenvalue of the problem $B\,A\,z = \lambda \, z$ in the range $[-10, 10]$ is: 5.14902

The corresponding eigenvector converged successfully and is:

\begin{displaymath}\left( \begin{array}{ccccc}
8.35024 \times {10}^{-1} & -1.715...
...89412 \times {10}^{-1} & 1.08019 & 1.32203 \end{array} \right) \end{displaymath}



Susan Blackford 2001-08-19