| // 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 int offsetInBytes |
| /// Returns the offset in bytes into the underlying byte buffer of this view. |
| /// @description Checks that the returned offset is correct. |
| /// @author msyabro |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Float32x4 pack(v) => new Float32x4.splat(v); |
| |
| 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.equals(offset, l.offsetInBytes); |
| } |
| |
| main() { |
| var elemSize = Float32x4List.bytesPerElement; |
| check([], 0, 0); |
| check([pack(1.0)], 0, 1); |
| check([ |
| 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) |
| ], 0, 1); |
| check([ |
| 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) |
| ], 9 * elemSize, 1); |
| check([ |
| 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) |
| ], 5 * elemSize, 5); |
| } |