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I am looking for a C or C++ or fortran library that implements the Jacobi eigenvalue algorithm:

do you know if it is available?

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closed as off topic by Grigory M, Asaf Karagila, t.b., Zev Chonoles Dec 13 '11 at 3:37

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up vote 2 down vote accepted

The SelfAdjointEigenSolver of eigen ( uses the Jacobi algorithm.

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thanks! better to use 3.0.4 or 3.1.0 alpha? – Andrea Zonca Dec 7 '11 at 20:10

This contains a shell archive of a bunch of FORTRAN routines implementing a version of the Jacobi method, due to Ivan Slapničar. See this paper for details on the algorithm.

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