}
		}

		if !isFinite(f) {
			continue
		}

		// 2. Check f is best approximation to r.
		if !checkIsBestApprox64(t, f, r) {
			// Append context information.
			t.Errorf("(input was %q)", input)
		}

		// 3. Check f->R->f roundtrip is non-lossy.
		checkNonLossyRoundtrip64(t, f)