LinearAlgebra/addmul/mul!(::Matrix{BigFloat}, ::LinearAlgebra.Symmetric{Float64, S} where S<:(AbstractMatrix{<:Float64}), ::LinearAlgebra.UnitLowerTriangular{BigFloat, S} where S<:AbstractMatrix{BigFloat}, α, β)/α = 1.226308350749189202133493381552398204803466796875, β = 0.0/adjoint and transpose/fa = identity, fb = adjoint @test returned_mat === Ccopy