Function identity

test/compute-engine/special-functions.test.ts:743–751

(name: string, lhs: string, rhs: string, p = 60)

    expectApprox(ce.expr(['AiryAi', 1]), 0.13529241631288141, 1e-12);
  });

  test('Ai(-1) ≈ 0.5355608832923521', () => {
    expectApprox(ce.expr(['AiryAi', -1]), 0.5355608832923521, 1e-12);
  });

  test('Ai(3) ≈ 0.006591139357460719', () => {
    // Previous expected value (…7460011, tolerance 1e-5) was fitted to the
    // plain-double series; the series now sums in double-double (P0-24).
    expectApprox(ce.expr(['AiryAi', 3]), 0.006591139357460719, 1e-12);
  });

  test('Ai(10) ≈ 1.1047532552898686e-10 (asymptotic, was 7.6 digits)', () => {