LU Factorization: A = P'*L*U ?

[Vivek Shanmuganathan \(95410006-BS\)]

Hello:

What is the Octave definition of LU-Factorisation of a
matrix A? As I understand from LAPACK documentation, the
factorisation is defined as

        A = P*L*U       ......  (1)

where U is upper diagonal, L is unit lower diagonal, and P
is the permutation matrix (unit matrix with rows
interchanged suitably to satisfy equation (1)). 

However, the value of the permutation matrix retuned by
Octave 2.0.14 (i386-redhat-linux-gnu) is actually
transpose(P) as given in (1).

Any comments?

Vivek...



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