LinearAlgebra/addmul/mul!(::Matrix{Float64}, ::LinearAlgebra.Hermitian{Float64, S} where S<:(AbstractMatrix{<:Float64}), ::LinearAlgebra.Tridiagonal{Float32, V} where V<:AbstractVector{Float32}, α, β)/α = 1.0, β = 0.4972929150861598 @test returned_mat === Ccopy