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Tridiagonal * Diagonal should return Tridiagonal #31870

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matthieugomez opened this issue Apr 29, 2019 · 1 comment · Fixed by #31889

Contributor

matthieugomez commented Apr 29, 2019 •

edited

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Currently it returns a SparseMatrix

typeof(Tridiagonal(zeros(2), zeros(3), zeros(3)) * Diagonal(zeros(3)))
# 3×3 SparseArrays.SparseMatrixCSC{Float64,Int64} with 0 stored entries

Contributor

mcognetta commented Apr 29, 2019

Huh, I must have missed this in #28883. I'll fix it unless someone else wants to try it out.

mcognetta mentioned this issue

making Bi/Tri/Sym times Diag output a structured matrix (not sparse) #31889

Merged

andreasnoack closed this as completed in #31889

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