LinearAlgebra/addmul/mul!(::Matrix{BigFloat}, ::LinearAlgebra.UpperTriangular{Float64, S} where S<:AbstractMatrix{Float64}, ::LinearAlgebra.Hermitian{BigFloat, S} where S<:(AbstractMatrix{<:BigFloat}), α, β)/α = -0.9506618080002897652747151369112543761730194091796875, β = 0.0/adjoint and transpose/fa = identity, fb = transpose @test returned_mat === Ccopy