LinearAlgebra/addmul/mul!(::Matrix{Int32}, ::LinearAlgebra.Tridiagonal{Int32, V} where V<:AbstractVector{Int32}, ::LinearAlgebra.SymTridiagonal{Int32, V} where V<:AbstractVector{Int32}, α, β)/α = true, β = -10/adjoint and transpose/fa = adjoint, fb = identity @test ≈(collect(returned_mat), exp_val, rtol = rtol, atol = atol)