Under some circumstances, whenever I call DEVCCG to diagonalize a general complex matrix, the program gets stuck inside and never returns. I do not even get out an error code so that I may continue with the rest of the program. I assume the iterative diagonalization inside the procedure does not converge in an allowed number of times. (I cannot access the innards of the code.)(adsbygoogle = window.adsbygoogle || []).push({});

Question: Are there some matrices that will not be diagonalizable with DEVCCG? Which types of matrices it cannot handle? Thank you very much.

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# IMSL diagonalizing a general complex matrix (DEVCCG)

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