Solving large illconditioned systens of LE's with ROOT

Hi,

I thinking of replacing a bit of FORTRAN (cernlib mathlib) code that is beeing used to solve ill conditioned systems of linear equations of the form

Ax=b,

A a mxn matrix (typically 100x2000)
x a 1xm vector
and
b a 1xn vector.

with c++ code. Could I expect good performance with the ROOT linear packages using for example SVD to solve the problem?

cheers

Joa

Hi Joa,

Yes, TDecompSVD class should be up to the task . In the tutorial
solveLinear.C, exaples are shown .

Eddy