LinearAlgebra/addmul/mul!(::Matrix{ComplexF64}, ::LinearAlgebra.Hermitian{ComplexF32, S} where S<:(AbstractMatrix{<:ComplexF32}), ::LinearAlgebra.SymTridiagonal{ComplexF64, V} where V<:AbstractVector{ComplexF64}, α, β)/α = -0.003638611479096864 - 0.2404205663122282im, β = -0.003638611479096864 - 0.2404205663122282im @test ≈(collect(returned_mat), exp_val, rtol = rtol, atol = atol)