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diagonalizzation routine


Hi people, i'm trying to build a diagonalization routine by myself.
I'm partcularly interested in finding the transformation matrix
operating the change from the non diagonal form the diagonal one.

D=U^t * M * V

I'd like to express such a matrix as a rotation in order to find the
euler angles parametrizing such a transformation.

I need to apply this routine to hermitian and not hermitian matrix.
Do you know a ready to use solution to my problem?
a package for mathematica or notebooks developed fram mathematica
users doing the job?

google is avaricious in this matter, thanks for any help you would
give.
roberto


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