LinearAlgebra/addmul/mul!(::Matrix{BigFloat}, ::LinearAlgebra.Bidiagonal{Float64, V} where V<:AbstractVector{Float64}, ::Matrix{Float64}, α, β)/α = 1.0, β = -0.21509344140875941153723260867991484701633453369140625/adjoint and transpose/fa = adjoint, fb = identity @test returned_mat === Ccopy