Running Stage 4.1.1 & Player v.3.1.0-svn @ Ubuntu 12.04 LTS.

I would like to take the inverse of a nxn matrix to use in my GraphSlam.

The issues that I encountered:

- .inverse() Eigen-library (3.1.2) doesn't allow zero values, returns NaN

- The LAPACK (3.4.2) library doesn't allow to use negative values, allows zero values

(used this example code http://stackoverflow.com/questions/3519959/computing-the-inverse-of-a-matrix-using-lapack-in-c)

(used this example code http://stackoverflow.com/questions/3519959/computing-the-inverse-of-a-matrix-using-lapack-in-c)

- Pseudo inversion doesn't seem to allow negative values either

- Seldon (5.1.2) wouldn't compile for some reason

Did anyone successfully implemented an nxn matrix inversion code that allows negative and zero-values.

Did anyone successfully implemented an nxn matrix inversion code that allows negative and zero-values.

Any good library recommendations?

All help would be appreciated,

Regards,

Toon