x.SetFrac(a, b)
	a = x.Num()
	b = x.Denom()
	a.SetInt64(5)
	b.SetInt64(3)
	if x.Cmp(q53) != 0 {
		t.Errorf("3) got %s want %s", x, q53)
	}
}

func TestFloat32Distribution(t *testing.T) {
	// Generate a distribution of (sign, mantissa, exp) values
	// broader than the float32 range, and check Rat.Float32()
	// always picks the closest float32 approximation.
	var add = []int64{
		0,