| /* |
| * 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. |
| */ |
| /** |
| * @assertion double acos(num x) |
| * Returns a value in the range 0..PI, or NaN if [x] is outside the range -1..1. |
| * @description Checks returned values on arguments outside [-1, 1]. |
| * @reviewer pagolubev |
| * @author msyabro |
| */ |
| |
| import "dart:math" as Math; |
| import "../../Utils/expect.dart"; |
| |
| main() { |
| Expect.isTrue(Math.acos(-10).isNaN); |
| Expect.isTrue(Math.acos(10).isNaN); |
| Expect.isTrue(Math.acos(1.0000000000001).isNaN); |
| Expect.isTrue(Math.acos(-1.0000000000001).isNaN); |
| |
| Expect.isTrue(Math.acos(double.nan).isNaN); |
| Expect.isTrue(Math.acos(double.infinity).isNaN); |
| Expect.isTrue(Math.acos(double.negativeInfinity).isNaN); |
| } |