LinearAlgebra/addmul/mul!(::Matrix{Float64}, ::LinearAlgebra.Bidiagonal{Float32, V} where V<:AbstractVector{Float32}, ::LinearAlgebra.Tridiagonal{Int64, V} where V<:AbstractVector{Int64}, α, β)/α = 0.1876463449382885, β = 0.0 @test returned_mat === Ccopy