LibTest/typed_data/Float32x4List/Float32x4List.view_A01_t01.dart

// 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
/// Float32x4List.view(
///     ByteBuffer buffer, [
///     int byteOffset = 0,
///     int length
/// ])
/// Creates a [Float32x4List] view of the specified region in buffer.
/// @description Checks that an instance of Float32x4List is created.
/// @author msyabro


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

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

void check(List<Float32x4> array, int offset, int length) {
  var tmp = new Float32x4List.fromList(array);
  var byteBuffer = tmp.buffer;
  var l = new Float32x4List.view(byteBuffer, offset, length);
  Expect.isTrue(l is Float32x4List);
}

main() {
  var elemSize = Float32x4List.bytesPerElement;
  check([], 0, 0);
  check([
    pack(3.4028234663852886e38), pack(1.401298464324817e-45),
    pack(1.1754943508222875e-38)
  ], 0, 3);
  check([pack(1000.0), pack(1000.0), pack(1000.0)], 0, 3);
  check([
    pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0),
    pack(6.0), pack(7.0), pack(8.0), pack(9.0), pack(10.0), pack(11.0),
    pack(12.0), pack(13.0), pack(14.0), pack(15.0), pack(16.0), pack(17.0)
  ], 0, 18);
  check([
    pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0),
    pack(6.0), pack(7.0), pack(8.0), pack(9.0), pack(10.0), pack(11.0),
    pack(12.0), pack(13.0), pack(14.0), pack(15.0), pack(16.0), pack(17.0)
  ], 5 * elemSize, 13);
  check([
    pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0),
    pack(6.0), pack(7.0), pack(8.0), pack(9.0), pack(10.0), pack(11.0),
    pack(12.0), pack(13.0), pack(14.0), pack(15.0), pack(16.0), pack(17.0)
  ], 17 * elemSize, 1);
}