LinearAlgebra/addmul/mul!(::Matrix{Float64}, ::LinearAlgebra.Diagonal{Int64, V} where V<:AbstractVector{Int64}, ::LinearAlgebra.Bidiagonal{Int64, V} where V<:AbstractVector{Int64}, α, β)/α = true, β = -0.46828241350127575/adjoint and transpose/fa = adjoint, fb = transpose @test returned_mat === Ccopy