mirror of
https://github.com/dart-lang/sdk
synced 2024-10-14 19:10:05 +00:00
0b58c4bd10
Retain the old values. Reapply of https://dart-review.googlesource.com/c/sdk/+/20680 with fixes for VM method fingerprints. Change-Id: Ie14e7ccc3194d5561983348e6b6752728913ff4d Reviewed-on: https://dart-review.googlesource.com/20664 Reviewed-by: Erik Ernst <eernst@google.com> Commit-Queue: Lasse R.H. Nielsen <lrn@google.com>
39 lines
1,008 B
Dart
39 lines
1,008 B
Dart
// Copyright (c) 2012, 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 test program for testing params.
|
|
//
|
|
// Contains test that is failing on dart2js. Merge this test with
|
|
// 'number_identity_test.dart' once fixed.
|
|
// VMOptions=--optimization-counter-threshold=10
|
|
|
|
import "package:expect/expect.dart";
|
|
import 'dart:typed_data';
|
|
|
|
double uint64toDouble(int i) {
|
|
var buffer = new Uint8List(8).buffer;
|
|
var bdata = new ByteData.view(buffer);
|
|
bdata.setUint64(0, i);
|
|
return bdata.getFloat64(0);
|
|
}
|
|
|
|
testNumberIdentity() {
|
|
var a = double.nan;
|
|
var b = a + 0.0;
|
|
Expect.isTrue(identical(a, b));
|
|
|
|
a = uint64toDouble((1 << 64) - 1);
|
|
b = uint64toDouble((1 << 64) - 2);
|
|
Expect.isFalse(identical(a, b));
|
|
|
|
a = 0.0 / 0.0;
|
|
b = 1.0 / 0.0;
|
|
Expect.isFalse(identical(a, b));
|
|
}
|
|
|
|
main() {
|
|
for (int i = 0; i < 20; i++) {
|
|
testNumberIdentity();
|
|
}
|
|
}
|