blob: 966ff9c7b23925f259b4a5b0a5a24ec1fd482e86 [file] [log] [blame]
 // 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 num pow(num x, num exponent) /// For doubles, pow(x, y) handles edge cases as follows: /// ... /// - if [x] is -Infinity or -0.0 and [y] is an odd integer, then the result /// is -pow(-[x] ,[y]). /// @description Checks the result when [x] is -Infinity or -0.0 and [y] is an /// odd integer. /// @author pagolubev import "dart:math" as Math; import "../../Utils/expect.dart"; main() { Expect.equals( double.negativeInfinity, Math.pow(double.negativeInfinity, 1)); Expect.equals( double.negativeInfinity, Math.pow(double.negativeInfinity, 1.0)); Expect.equals( double.negativeInfinity, Math.pow(double.negativeInfinity, 11)); Expect.equals( double.negativeInfinity, Math.pow(double.negativeInfinity, 11.0)); Expect.equals(.0, Math.pow(double.negativeInfinity, -1)); Expect.isTrue(Math.pow(double.negativeInfinity, -1).isNegative); Expect.equals(.0, Math.pow(double.negativeInfinity, -1.0)); Expect.isTrue(Math.pow(double.negativeInfinity, -1.0).isNegative); Expect.equals(.0, Math.pow(double.negativeInfinity, -11)); Expect.isTrue(Math.pow(double.negativeInfinity, -11).isNegative); Expect.equals(.0, Math.pow(double.negativeInfinity, -11.0)); Expect.isTrue(Math.pow(double.negativeInfinity, -11.0).isNegative); Expect.equals(.0, Math.pow(-.0, 1)); Expect.isTrue(Math.pow(-.0, 1).isNegative); Expect.equals(.0, Math.pow(-.0, 1.0)); Expect.isTrue(Math.pow(-.0, 1.0).isNegative); Expect.equals(.0, Math.pow(-.0, 11)); Expect.isTrue(Math.pow(-.0, 11).isNegative); Expect.equals(.0, Math.pow(-.0, 11.0)); Expect.isTrue(Math.pow(-.0, 11.0).isNegative); Expect.equals(double.negativeInfinity, Math.pow(-.0, -1)); Expect.equals(double.negativeInfinity, Math.pow(-.0, -1.0)); Expect.equals(double.negativeInfinity, Math.pow(-.0, -11)); Expect.equals(double.negativeInfinity, Math.pow(-.0, -11.0)); }