// Copyright (c) 2013, 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 Iterable<E> reversed
/// Returns an [Iterable] of the objects in [this] list in reverse order.
/// @description Checks that the elements of [reversed] are the elements of
/// [this] in reverse order.
/// @author msyabro


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

Float32x4 pack(v) => new Float32x4.splat(v);

equal(obj1, obj2) {
  var res = obj1.equal(obj2);
  return res.flagX && res.flagY && res.flagZ && res.flagW;
}

check(List<Float32x4> list) {
  var l = new Float32x4List.fromList(list);
  var rev = l.reversed;
  for (int i = 0; i < list.length; ++i) {
    Expect.isTrue(equal(l.elementAt(list.length - 1 - i), rev.elementAt(i)));
  }
}

main() {
  check([]);
  check([pack(1.0)]);
  check([pack(1.0), pack(2.0)]);
  check([pack(1.0), pack(2.0), pack(3.0)]);
  var list = List<Float32x4>.filled(1000, pack(0.0));
  for (int i = 0; i < 1000; ++i) {
    list[i] = pack(i * 1.0);
  }
  check(list);
}