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The PCTREVC/PZTREVC test program performs a right and
left eigenvector calculation of a triangular matrix followed by
a residual checks of the calculated eigenvectors.
The following tests will be performed on P_TREVC. The
basic test is:
using the 1-norm. It also tests the normalization of .
where is the upper Hessenberg matrix, is the order of the
matrix, is the j-th eigenvector, and m-norm is the max-norm of a
vector, and represents PxLAMCH( ICTXT, 'P' ). The max-norm of a
complex n-vector in this case is the