| // 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 abstract int round() |
| * Returns the integer closest to this. |
| * Rounds away from zero when there is no closest integer: |
| * (3.5).round() == 4 and (-3.5).round() == -4. |
| * @description Checks that [:round():] does not change the object. |
| * @author msyabro |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| check(double d) { |
| double oldVal = d; |
| d.round(); |
| Expect.equals(oldVal, d); |
| } |
| |
| main() { |
| check(.0); |
| check(.1); |
| check(1.0); |
| check(33.333); |
| check(4.9406564584124654e-324); // min subnormal |
| check(2.2250738585072014e-308); // min normal |
| check(1.7976931348623157e308); // max normal |
| } |
