Robert Nystrom
fc1b1ecc71
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
39 lines
1008 B
Dart
39 lines
1008 B
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Dart test program for testing params.
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//
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// Contains test that is failing on dart2js. Merge this test with
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// 'number_identity_test.dart' once fixed.
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// VMOptions=--optimization-counter-threshold=10
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import "package:expect/expect.dart";
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import 'dart:typed_data';
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double uint64toDouble(int i) {
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var buffer = new Uint8List(8).buffer;
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var bdata = new ByteData.view(buffer);
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bdata.setUint64(0, i);
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return bdata.getFloat64(0);
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}
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testNumberIdentity() {
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var a = double.nan;
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var b = a + 0.0;
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Expect.isTrue(identical(a, b));
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a = uint64toDouble((1 << 64) - 1);
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b = uint64toDouble((1 << 64) - 2);
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Expect.isFalse(identical(a, b));
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a = 0.0 / 0.0;
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b = 1.0 / 0.0;
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Expect.isFalse(identical(a, b));
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}
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main() {
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for (int i = 0; i < 20; i++) {
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testNumberIdentity();
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}
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}
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