LibTest/math/pow_A06_t01.dart

// 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.

// @dart = 2.9

/// @assertion num pow(num x, num exponent)
/// For doubles, pow(x, y) handles edge cases as follows:
/// ...
///  - if [x] is negative (but not -0.0) and [y] is a finite non-integer, the
///    result is NaN.
/// @description Checks that if [x] is a negative number and
/// [y] is a finite non-integer, the result is NaN.
/// @author pagolubev
/// @reviewer msyabro


import "dart:math" as Math;
import "../../Utils/expect.dart";

main() {
  Expect.isTrue(Math.pow(-1, 0.5).isNaN);
  Expect.isTrue(Math.pow(-1, 1/3).isNaN);

  Expect.isTrue(Math.pow(-1.111, -0.5).isNaN);
  Expect.isTrue(Math.pow(-1.111, -2/3).isNaN);

  Expect.isTrue(Math.pow(-4.9406564584124654e-324, -1.1).isNaN);
  Expect.isTrue(Math.pow(-4.9406564584124654e-324, 0.5).isNaN);
}