LinearAlgebra/addmul/mul!(::Matrix{ComplexF64}, ::LinearAlgebra.Tridiagonal{ComplexF64, V} where V<:AbstractVector{ComplexF64}, ::LinearAlgebra.UpperTriangular{ComplexF64, S} where S<:AbstractMatrix{ComplexF64}, α, β)/α = 1.0 + 0.0im, β = 0.9037055656943378 - 0.30370996893212265im/adjoint and transpose/fa = identity, fb = transpose @test returned_mat === Ccopy