| /* |
| * 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 Float64x2List asFloat64x2List([int offsetInBytes = 0, int length]) |
| * Creates a Float64x2List view of a region of this byte buffer. |
| * The view is backed by the bytes of this byte buffer. Any changes made to the |
| * Float64x2List will also change the buffer, and vice versa. |
| * @description Checks that method asFloat64x2List creates a Float64x2List view |
| * of a region of this byte buffer, and any changes made to Float64x2List will |
| * also change the buffer, and vice versa. |
| * @author ngl@unipro.ru |
| * @issue 43204 |
| */ |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| void check(ByteBuffer buffer){ |
| int bufSizeInBytes = buffer.lengthInBytes; |
| Float64x2List res = buffer.asFloat64x2List(0); |
| Float64x2List res1 = buffer.asFloat64x2List(0); |
| int viewSizeInBytes = res.lengthInBytes; |
| int viewLength = res.length; |
| int shift = (Float64x2List.bytesPerElement == 16) ? 4 : 0; |
| |
| Expect.isTrue(res is Float64x2List); |
| Expect.equals(bufSizeInBytes >> shift, viewLength); |
| |
| if (viewSizeInBytes != 0) { |
| // Expect.equals(res[0], res1[0]); |
| Expect.equals(res1[0].x, res[0].x); |
| Expect.equals(res1[0].y, res[0].y); |
| |
| Float64x2 v1 = new Float64x2(2.0, 2.1);//, 2.2, 2.3); |
| // set value to the first element of res1 |
| res1[0] = v1; |
| // the first element of res is equal to set value |
| Expect.equals(v1.x, res[0].x); |
| Expect.equals(v1.y, res[0].y); |
| |
| Float64x2 v2 = new Float64x2(4.0, 4.1);//, 4.2, 4.3); |
| // set value to the last element of res |
| res[viewLength - 1] = v2; |
| // the last element of res1 is equal to set value |
| Expect.equals(v2.x, res[viewLength - 1].x); |
| Expect.equals(v2.y, res[viewLength - 1].y); |
| } |
| Expect.notEquals(res, res1); |
| Expect.equals(res.buffer, res1.buffer); |
| } |
| |
| main() { |
| var list0 = <int>[]; |
| var list1 = new List.filled(5, 0); |
| var list2 = new List.filled(8, 0); |
| var list3 = new Int32x4List(1); |
| var list4 = new Int32x4List(5); |
| var list5 = new Int32x4List(0); |
| |
| check((new Int8List.fromList(list0)).buffer); |
| check((new Int8List.fromList(list1)).buffer); |
| check((new Int8List.fromList(list2)).buffer); |
| |
| check((new Int16List.fromList(list0)).buffer); |
| check((new Int16List.fromList(list1)).buffer); |
| check((new Int16List.fromList(list2)).buffer); |
| |
| check((new Int32List.fromList(list0)).buffer); |
| check((new Int32List.fromList(list1)).buffer); |
| check((new Int32List.fromList(list2)).buffer); |
| |
| check((new Int64List.fromList(list0)).buffer); |
| check((new Int64List.fromList(list1)).buffer); |
| check((new Int64List.fromList(list2)).buffer); |
| |
| check((new Int32x4List.fromList(list5)).buffer); |
| check((new Int32x4List.fromList(list3)).buffer); |
| check((new Int32x4List.fromList(list4)).buffer); |
| } |