LinearAlgebra/addmul/mul!(::Matrix{ComplexF64}, ::LinearAlgebra.SymTridiagonal{ComplexF64, V} where V<:AbstractVector{ComplexF64}, ::LinearAlgebra.UnitUpperTriangular{ComplexF64, S} where S<:AbstractMatrix{ComplexF64}, α, β)/α = 0.921693599173184 + 0.05676219168202381im, β = false/adjoint and transpose/fa = identity, fb = adjoint @test returned_mat === Ccopy