From: Phil DeMier
Date: Wed, 19 Mar 2008 10:47:05 -0400
The INFO parameter for dspevx only describes a failure with eigenvectors
failing to converge.
INFO (output) INTEGER
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value
> 0: if INFO = i, then i eigenvectors failed to converge.
Their indices are stored in array IFAIL.
If DSTEBZ fails and JOBZ='N', then dspevx will return with INFO>0 but it
has nothing to do with an eigenvector converging failure.
Should INFO be set to zero after DSTEBZ returns?
Thanks and best regards,
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