// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion double atan2(num a, num b)
/// Returns NaN if either argument is NaN.
/// @description Checks result if one of arguments is NaN.
/// @author msyabro
/// @reviewer pagolubev
/// @needsreview undocumented


import "dart:math" as Math;
import "../../Utils/expect.dart";

main() {
  Expect.isTrue(Math.atan2(double.nan, double.infinity).isNaN);
  Expect.isTrue(Math.atan2(double.nan, double.negativeInfinity).isNaN);
  Expect.isTrue(Math.atan2(double.nan, 1).isNaN);
  Expect.isTrue(Math.atan2(double.infinity, double.nan).isNaN);
  Expect.isTrue(Math.atan2(double.negativeInfinity, double.nan).isNaN);
  Expect.isTrue(Math.atan2(1, double.nan).isNaN);
  Expect.isTrue(Math.atan2(double.nan, double.nan).isNaN);
}