LibTest/core/double/operator_multiplication_A01_t03.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.

/// @assertion double operator *(num other)
/// @description Checks that if one of the operands is a zero and the other is 
/// an infinity the result is NaN.
/// @author pagolubev

import "../../../Utils/expect.dart";

checkNaN(d) {
  var msg = 'expected: NaN, actual: $d';
  Expect.isTrue(d.isNaN, msg);
}

main() {
  checkNaN(double.infinity * .0);
  checkNaN(.0 * double.infinity);

  checkNaN(double.infinity * (-.0));
  checkNaN((-.0) * double.infinity);

  checkNaN(double.negativeInfinity * .0);
  checkNaN(.0 * double.negativeInfinity);

  checkNaN(double.negativeInfinity * (-.0));
  checkNaN((-.0) * double.negativeInfinity);
}