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From: lauten@ss7 (Markus Lautenbacher)
Newsgroups: sci.math.num-analysis,comp.sources.wanted,comp.lang.c
Subject: WANTED: Eigensys-Solver of Real Nonsym Matrix in C
Summary: WANTED: Eigensys-Solver of Real Nonsym Matrix in C
Keywords: eigenvector eigenvalue eigensystem C c matrix
Message-ID: <lauten.673549707@ss7>
Date: 6 May 91 17:08:27 GMT
Sender: news@Informatik.TU-Muenchen.DE
Organization: Technische Universitaet Muenchen, Germany
Lines: 24


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@feynman.t30.physik.tu-muenchen.de