LibTest/core/double/toDouble_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.

/// @assertion double toDouble()
/// @description Checks that [:toDouble():] returns the exact value on bunch of
/// values.
/// @author pagolubev

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

inner_check(d) {
  var v = d.toDouble();
  Expect.isTrue(v is double);
  Expect.equals(v, d);
}

check(double d) {
  inner_check(d);
  inner_check(-d);
}

main() {
  check(1.0000000000000002);
  check(0.9999999999999999);
  check(1.1);
  check(0.9);
  check(1.4999999999999998);
  check(1.5000000000000002);

  check(2.0000000000000004);
  check(1.9999999999999998);
  check(2.1);
  check(1.9);
  check(2.4999999999999996);
  check(2.5000000000000004);

  check(3.0000000000000004);
  check(2.9999999999999996);
  check(3.1);
  check(2.9);
  check(3.4999999999999996);
  check(3.5000000000000004);

  check(1024.0000000000002);
  check(1023.9999999999999);
  check(1024.1);
  check(1023.9);
  check(1024.4999999999998);
  check(1024.5000000000002);

  check(32767.002);
  check(32766.998);
  check(32767.1);
  check(32766.9);
  check(32767.499999999996);
  check(32767.500000000004);

  check(6031769.000000001);
  check(6031768.999999999);
  check(6031769.1);
  check(6031768.9);
  check(6031769.499999999);
  check(6031769.500000001);

  check(2147483647.0000002);
  check(2147483646.9999998);
  check(2147483647.1);
  check(2147483646.9);
  check(2147483647.4999998);
  check(2147483647.5000002);

  check(4503599627370495.5);
}