// Copyright (c) 2017, 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 int signMask
/// Extract the top bit from each lane return them in the first 4 bits. "x" lane
/// is bit 0. "y" lane is bit 1. "z" lane is bit 2. "w" lane is bit 3.
/// @description Checks that the signMask is read-only and cannot be set.
/// @author ngl@unipro.ru


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

main() {
  dynamic obj = new Int32x4(1, 2, 3, 4);
  Expect.throws(() { obj.signMask = 0; }, (e) => e is NoSuchMethodError);
}