I am currently working for RDF and CDF mainly. I was planning to overload
LU function of *sage/matrix/matrix2.pyx* by defining new LU in
*sage/matrix/matrix_double_sparce.pyx* .
I couldn't understand what is multiprecision version but I guess you are
asking for RR or other inexact field.
Please correct me if I am wrong.
On Wednesday, February 28, 2024 at 9:51:32 PM UTC+5:30 Nils Bruin wrote:
> As Dima points out, SPLU decomposition is probably more useful in
> practice, so it's great to expose it. It should probably be exposed through
> a different method than PLU decomposition, though.
>
> For the return format: permutations are much more compact and efficient to
> describe permutations than permutation matrices. Also because of the
> parent: a permutation matrix is a {0,1}-valued matrix so it can be well
> represented over ZZ, rather than floats. So primarily the routine should
> expose that scipy exposes. Whether other bells and whistles are required is
> another matter.
>
> Is this only for system floats/complex numbers? or will you also be
> implementing multiprecision versions?
>
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