ladybird/Libraries/LibJS/Tests/builtins/Math/Math.atanh.js

test("basic functionality", () => {
  expect(Math.atanh).toHaveLength(1);

  expect(Math.atanh(-2)).toBeNaN();
  expect(Math.atanh(2)).toBeNaN();
  expect(Math.atanh(-1)).toBe(-Infinity);
  // FIXME: expect(Math.atanh(0)).toBe(0);
  expect(Math.atanh(0.5)).toBeCloseTo(0.549306);
  // FIXME: expect(Math.atanh(1)).toBe(Infinity);
});