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dsvdc
2000 Jul 05
0
svd() (Linpack) problems/bug for ill-conditioned matrices (PR#594)
...NPACK routine DSVDC() which did not converge in 30 QR iterations.
example code appended
--- The examples I've found are machine dependent and disjoint for Linux &
Solaris.
HOWEVER: S-PLUS 5.1 on both machines does NOT fail for the identical
matrices!
S-PLUS has basically .Fortran("dsvdcs" ,
and looks like it is calling Linpack as well, but note that the subroutine
has an extra "s" appended (``S version of Linpack'' ??).
---
Then I had a short look at GSL (GNU scientific library)
http://sourceware.cygnus.com/gsl/
which calls a LAPACK (instead of LINPACK)...