LinearAlgebra/addmul/mul!(::Matrix{BigFloat}, ::LinearAlgebra.LowerTriangular{Float64, S} where S<:AbstractMatrix{Float64}, ::LinearAlgebra.Hermitian{BigFloat, S} where S<:(AbstractMatrix{<:BigFloat}), α, β)/α = -0.693227481139754075911696418188512325286865234375, β = 0.0/β = 0 ignores C .= NaN @test returned_mat === Ccopy