blob: 6330cdf188e13ea0d8db081b72787cba6758027d [file] [log] [blame]
 // Copyright (c) 2016, 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 bool operator ==(Object other) /// Test whether this value is numerically equal to other. /// /// If both operands are doubles, they are equal if they have the same /// representation, except that: /// /// - zero and minus zero (0.0 and -0.0) are considered equal. They both have the /// numerical value zero. /// - NaN is not equal to anything, including NaN. If either operand is NaN, /// the result is always false. /// If one operand is a double and the other is an int, they are equal if the /// double has an integer value (finite with no fractional part) and /// identical(doubleValue.toInt(), intValue) is true. /// /// If both operands are integers, they are equal if they have the same value. /// /// Returns false if other is not a num. /// /// Notice that the behavior for NaN is non-reflexive. This means that equality /// of double values is not a proper equality relation, as is otherwise required /// of operator==. Using NaN in, e.g., a HashSet will fail to work. The behavior /// is the standard IEEE-754 equality of doubles. /// /// If you can avoid NaN values, the remaining doubles do have a proper equality /// relation, and can be used safely. /// /// Use compareTo for a comparison that distinguishes zero and minus zero, and /// that considers NaN values as equal. /// @description Check that integer values are equal if they have the same value /// @author sgrekhov@unipro.ru import "../../../Utils/expect.dart"; main() { Expect.isTrue(0 == 0); Expect.isTrue(2 == 2); Expect.isTrue(2147483648 == 2147483648); Expect.isTrue(-2147483647 == -2147483647); Expect.isTrue(4294967296 == 4294967296); Expect.isTrue(-4294967295 == -4294967295); Expect.isTrue(9007199254740991 == 9007199254740991); int x = 1; int y = 1; Expect.isTrue(x == y); }