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From: Giuseppe Bilotta (giuseppe.bilotta_at_[hidden])
Date: 2008-02-23 17:41:53

Hello all,

I was wondering if it was possible to 'decompose' a matrix into its diagonal
and lower and upper triangles, in uBLAS.

The idea would be, given some matrix M, to have some methods like


to return a diagonal_adaptor with the diagonal of M,


to return triangular matrices of the appropriate type with the lower and upper
triangles of the matrix M (thus excluding the diagonal of the matrix), in such
a way that

M = M.diagonal() + M.lower_triangle() + M.upper_triangle()

Is there anything like this in uBLAS?

Giuseppe "Oblomov" Bilotta