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[Lapack] [lapackers] bug in DGEHRD



There is a permutation that makes this matrix 2x2 block triangular,

Mmm, I can not find this permutation ...

I found the permutation that makes the matrix block-triangular by eyeball,
based on the Kronecker-product-like spyplot of the matrix:
[ ... ]
This makes it block lower triangular where the first block is 24x24 and
the second 4x4.

well, so long, for the 2x2 block triangularity then ....

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