r.Multiply(&x, &xinv) r.reduce() if one != r { t.Errorf("random inversion identity failed, got: %x for field element %x", r, x) } zero := Element{} x.Set(&zero) if xx := xinv.Invert(&x); xx != &xinv { t.Errorf("inverting zero did not return the receiver") } else if xinv.Equal(&zero) != 1 { t.Errorf("inverting zero did not return zero") } } func TestSelectSwap(t *testing.T) { a := Element{358744748052810, 1691584618240980, 977650209285361, 1429865912637724, 560044844278676} b := Element{84926274344903, 473620666599931,...