| // 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 operator +(num other) |
| /// @description Checks that if one operand is a positive infinity and the other |
| /// is a negative infinity the result is NaN. |
| /// @author pagolubev |
| |
| import "../../../Utils/expect.dart"; |
| |
| |
| final double positive_infinity = 1 / 0; |
| final double negative_infinity = -1 / 0; |
| |
| checkNaN(d) { |
| var msg = 'Expected: NaN, actual: $d'; |
| Expect.isTrue(d.isNaN, msg); |
| } |
| |
| main() { |
| checkNaN(positive_infinity + negative_infinity); |
| checkNaN(negative_infinity + positive_infinity); |
| |
| checkNaN(double.infinity + double.negativeInfinity); |
| checkNaN(double.negativeInfinity + double.infinity); |
| } |