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From: skh@nl.cs.cmu.edu (Steve Handerson)
Newsgroups: sci.math.num-analysis,sci.math,comp.sources.wanted,alt.sources.wanted,misc.wanted
Subject: C Singular Value Decomposition package?
Message-ID: <10489@pt.cs.cmu.edu>
Date: 17 Sep 90 18:27:52 GMT
Organization: Carnegie-Mellon University, CS/RI
Lines: 21

Folks,

I'm in dire need of a singular-value-decomposition package
for arbitrary size (large) matrices.

If anyone has one already implemented and working in C,
I'd really appreciate it.
I have algorithms with non-C code,
but have been unable to write code from them that works.

Alternatively, if anyone can tell me in simple terms
what to do with the eigenvalues and eigenvectors of
A * transpose(A) and transpose(A) * A 
so that the three actually multiply together to form the original
matrix, I'd appreciate that too.

Please mail me at skh@nl.cs.cmu.edu internet, and I guess
...!nl.cs.cmu.edu!skh from a backbone sight on the internet
otherwise, and I'll post a summary on sci.math.num-analysis.

-- Steve