Re: [ublas] determinant and norm

From: Eddie Vedder (Eddie.Vedder_at_[hidden])
Date: 2005-12-19 10:36:34

> The determinant is 
> usually computed from the LU factorization: compute the product of the 
> diagonal of U and you have the determinant.

I computed the LU factorisation of the matrix with ATLAS bindings function
lu_factor(A,ipiv) where A holds the LU factorisation. The problem is, that
the product of the diagonal results in a determinant with wrong sign. I
found out, this has to do with the pivoting. How can I find out the correct
sign of the determinant?

Ed

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