WANTED: Eigensys-Solver of Real Nonsym Matrix in C

Markus Lautenbacher lauten at ss7
Tue May 7 03:08:27 AEST 1991


Hello,

can any kind soul help me on the following point. I need a numerically
stable (old K&R style or ANSI) C code that gives *all* eigenvectors
*and* eigenvalues for a *real nonsymmetric* matrix. The size of
matrices to handle will be limited by about 15x15, performance in not
that critical but the lack of symmetry in the input matrix is.
I know such a thing has been coded in FORTRAN as part of EISPACK but I
need it in C.

I would appreciate C code or hints to references on proper algorithms
how to implement such a routine.

If you know anything that might help me could you please drop me a
email.

Thanx in advance,
                 MARKUS
--
MARKUS E. LAUTENBACHER,
Technical University Munich,    | phone:    0049/89/3209-2398
Physics Dept.-Theo. Physics T31,| Internet:
D-8046 Garching, FRG.           | lauten at feynman.t30.physik.tu-muenchen.de



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