| // Copyright (c) 2013, 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. |
| |
| import 'package:expect/expect.dart'; |
| |
| main() { |
| Expect.equals(0.0, 0.0.truncateToDouble()); |
| Expect.equals(0.0, double.MIN_POSITIVE.truncateToDouble()); |
| Expect.equals(0.0, (2.0 * double.MIN_POSITIVE).truncateToDouble()); |
| Expect.equals(0.0, (1.18e-38).truncateToDouble()); |
| Expect.equals(0.0, (1.18e-38 * 2).truncateToDouble()); |
| Expect.equals(0.0, 0.49999999999999994.truncateToDouble()); |
| Expect.equals(0.0, 0.5.truncateToDouble()); |
| Expect.equals(0.0, 0.9999999999999999.truncateToDouble()); |
| Expect.equals(1.0, 1.0.truncateToDouble()); |
| Expect.equals(1.0, 1.000000000000001.truncateToDouble()); |
| // The following numbers are on the border of 52 bits. |
| // For example: 4503599627370499 + 0.5 => 4503599627370500. |
| Expect.equals(4503599627370496.0, 4503599627370496.0.truncateToDouble()); |
| Expect.equals(4503599627370497.0, 4503599627370497.0.truncateToDouble()); |
| Expect.equals(4503599627370498.0, 4503599627370498.0.truncateToDouble()); |
| Expect.equals(4503599627370499.0, 4503599627370499.0.truncateToDouble()); |
| |
| Expect.equals(9007199254740991.0, 9007199254740991.0.truncateToDouble()); |
| Expect.equals(9007199254740992.0, 9007199254740992.0.truncateToDouble()); |
| Expect.equals(double.MAX_FINITE, double.MAX_FINITE.truncateToDouble()); |
| |
| Expect.equals(0.0, (-double.MIN_POSITIVE).truncateToDouble()); |
| Expect.equals(0.0, (2.0 * -double.MIN_POSITIVE).truncateToDouble()); |
| Expect.equals(0.0, (-1.18e-38).truncateToDouble()); |
| Expect.equals(0.0, (-1.18e-38 * 2).truncateToDouble()); |
| Expect.equals(0.0, (-0.49999999999999994).truncateToDouble()); |
| Expect.equals(0.0, (-0.5).truncateToDouble()); |
| Expect.equals(0.0, (-0.9999999999999999).truncateToDouble()); |
| Expect.equals(-1.0, (-1.0).truncateToDouble()); |
| Expect.equals(-1.0, (-1.000000000000001).truncateToDouble()); |
| Expect.equals(-4503599627370496.0, (-4503599627370496.0).truncateToDouble()); |
| Expect.equals(-4503599627370497.0, (-4503599627370497.0).truncateToDouble()); |
| Expect.equals(-4503599627370498.0, (-4503599627370498.0).truncateToDouble()); |
| Expect.equals(-4503599627370499.0, (-4503599627370499.0).truncateToDouble()); |
| Expect.equals(-9007199254740991.0, (-9007199254740991.0).truncateToDouble()); |
| Expect.equals(-9007199254740992.0, (-9007199254740992.0).truncateToDouble()); |
| Expect.equals(-double.MAX_FINITE, (-double.MAX_FINITE).truncateToDouble()); |
| |
| Expect.equals(double.INFINITY, double.INFINITY.truncateToDouble()); |
| Expect.equals( |
| double.NEGATIVE_INFINITY, double.NEGATIVE_INFINITY.truncateToDouble()); |
| Expect.isTrue(double.NAN.truncateToDouble().isNaN); |
| |
| Expect.isTrue(0.0.truncateToDouble() is double); |
| Expect.isTrue(double.MIN_POSITIVE.truncateToDouble() is double); |
| Expect.isTrue((2.0 * double.MIN_POSITIVE).truncateToDouble() is double); |
| Expect.isTrue((1.18e-38).truncateToDouble() is double); |
| Expect.isTrue((1.18e-38 * 2).truncateToDouble() is double); |
| Expect.isTrue(0.49999999999999994.truncateToDouble() is double); |
| Expect.isTrue(0.5.truncateToDouble() is double); |
| Expect.isTrue(0.9999999999999999.truncateToDouble() is double); |
| Expect.isTrue(1.0.truncateToDouble() is double); |
| Expect.isTrue(1.000000000000001.truncateToDouble() is double); |
| Expect.isTrue(4503599627370496.0.truncateToDouble() is double); |
| Expect.isTrue(4503599627370497.0.truncateToDouble() is double); |
| Expect.isTrue(4503599627370498.0.truncateToDouble() is double); |
| Expect.isTrue(4503599627370499.0.truncateToDouble() is double); |
| Expect.isTrue(9007199254740991.0.truncateToDouble() is double); |
| Expect.isTrue(9007199254740992.0.truncateToDouble() is double); |
| Expect.isTrue(double.MAX_FINITE.truncateToDouble() is double); |
| |
| Expect.isTrue((-double.MIN_POSITIVE).truncateToDouble() is double); |
| Expect.isTrue((2.0 * -double.MIN_POSITIVE).truncateToDouble() is double); |
| Expect.isTrue((-1.18e-38).truncateToDouble() is double); |
| Expect.isTrue((-1.18e-38 * 2).truncateToDouble() is double); |
| Expect.isTrue((-0.49999999999999994).truncateToDouble() is double); |
| Expect.isTrue((-0.5).truncateToDouble() is double); |
| Expect.isTrue((-0.9999999999999999).truncateToDouble() is double); |
| Expect.isTrue((-1.0).truncateToDouble() is double); |
| Expect.isTrue((-1.000000000000001).truncateToDouble() is double); |
| Expect.isTrue((-4503599627370496.0).truncateToDouble() is double); |
| Expect.isTrue((-4503599627370497.0).truncateToDouble() is double); |
| Expect.isTrue((-4503599627370498.0).truncateToDouble() is double); |
| Expect.isTrue((-4503599627370499.0).truncateToDouble() is double); |
| Expect.isTrue((-9007199254740991.0).truncateToDouble() is double); |
| Expect.isTrue((-9007199254740992.0).truncateToDouble() is double); |
| Expect.isTrue((-double.MAX_FINITE).truncateToDouble() is double); |
| } |