f := func(sc Scalar) bool {
		return isReduced(sc.Bytes())
	}
	if err := quick.Check(f, quickCheckConfig(1024)); err != nil {
		t.Errorf("generated unreduced scalar: %v", err)
	}
}

func TestScalarSetCanonicalBytes(t *testing.T) {
	f1 := func(in [32]byte, sc Scalar) bool {
		// Mask out top 4 bits to guarantee value falls in [0, l).
		in[len(in)-1] &= (1 << 4) - 1
		if _, err := sc.SetCanonicalBytes(in[:]); err != nil {