LinearAlgebra/addmul/mul!(::Matrix{ComplexF64}, ::Matrix{ComplexF64}, ::LinearAlgebra.UnitLowerTriangular{ComplexF64, S} where S<:AbstractMatrix{ComplexF64}, α, β)/α = true, β = 0.0 + 0.0im/adjoint and transpose/fa = transpose, fb = identity @test ≈(collect(returned_mat), exp_val, rtol = rtol, atol = atol)