if err.Cmp(maxErr) >= 0 {
				t.Errorf("prec = %d, Sqrt(%v) =\ngot err  %g;\nwant maxErr %g",
					prec, test.x, err, maxErr)
			}
		}
	}
}

func TestFloatSqrtSpecial(t *testing.T) {
	for _, test := range []struct {
		x    *Float
		want *Float
	}{
		{NewFloat(+0), NewFloat(+0)},
		{NewFloat(-0), NewFloat(-0)},
		{NewFloat(math.Inf(+1)), NewFloat(math.Inf(+1))},
	} {