R-alpha: eigen() bug

Ben Bolker ben@eno.Princeton.EDU
Tue, 1 Jul 1997 13:09:25 -0400 (EDT)

  It looks like there may be a mismatch between the library function and
the C code ... the help file for eigen() says that the function checks to
see if the matrix is symmetrix first, and passes it off to different
routines in different cases.  It looks like eigen() doesn't actually
bother to do any checking, and just *assumes* it's symmetric ...

Benjamin Bolker          Dep't of Ecology and Evolutionary Biology,
ben@eno.princeton.edu    Princeton University
tel: (609) 258-6886,     fax: (609) 258-1334

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