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The Nonsymmetric Eigenvalue Drivers

The driver routines for the nonsymmetric eigenvalue problem are

xGEEV
eigenvalue/eigenvector driver,
xGEEVX
expert version of xGEEV (includes condition estimation),
xGEES
Schur form driver, and
xGEESX
expert version of xGEES (includes condition estimation).

For these subroutines, some tests are done by generating random matrices of a dimension and type chosen by the user, and computing error bounds similar to those used for the nonsymmetric eigenvalue computational routines. Other tests use a file of precomputed matrices and condition numbers, identical to that used for testing the nonsymmetric eigenvalue/vector condition estimation routines.

The parameters that can be varied in the random matrix tests are:



Susan Blackford 2001-08-13