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[Lapack] DGGEV routine available at LAPACK

Dear Musaddeuq,

DGGEV does not return the eigenvalues in any specified order.  (Of 
course, as you know it actually returns vectors ALPHAR, ALPHAI and BETA 
such that the jth eigenvalue is (ALPHAR(j) +i*ALPHAI(j))/BETA(j).)

Best wishes,

Sven Hammarling.

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