LibTest/core/double/operator_unary_minus_A01_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 double operator unary-()
/// @description Checks [:unary-():] on a bunch of values.
/// @author pagolubev

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


check(double d) {
  double neg = -d;
  Expect.isTrue(neg.isNegative);
  Expect.equals(d, neg.abs());
  neg = -neg;
  Expect.isFalse(neg.isNegative);
  Expect.equals(d, neg);
}

main() {
  Expect.equals(.0, -0);
  check(.1);
  check(1.0);
  check(33.333);
  check(4.9406564584124654e-324);  // min subnormal
  check(2.2250738585072014e-308);  // min normal
  check(1.7976931348623157e308);  // max normal
}