LinearAlgebra/addmul/mul!(::Matrix{Float64}, ::LinearAlgebra.UnitUpperTriangular{Float64, S} where S<:AbstractMatrix{Float64}, ::LinearAlgebra.UnitLowerTriangular{Float32, S} where S<:AbstractMatrix{Float32}, α, β)/α = 1.6252945144080595, β = false/adjoint and transpose/fa = identity, fb = transpose @test returned_mat === Ccopy