// 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)
/// A variant of atan.
/// Converts both arguments to doubles.
/// @description Checks that an Error is thrown when argument is a null (not a
/// number).
/// @author msyabro
/// @reviewer pagolubev
/// @needsreview undocumented


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

void checkNPE(var arg1, var arg2) {
  Expect.throws(() {
    Math.atan2(arg1, arg2);
  });
}
main() {
  checkNPE(null, 1);
  checkNPE(1, null);
  checkNPE(null, null);
  checkNPE(double.nan, null);
}