| // 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 Float32x4List asFloat32x4List([int offsetInBytes = 0, int length]) |
| /// Creates a Float32x4List view of a region of this byte buffer. |
| /// The view is backed by the bytes of this byte buffer. Any changes made to the |
| /// Float32x4List will also change the buffer, and vice versa. |
| /// @description Checks that method asFloat32x4List creates a Float32x4List view |
| /// of a region of this byte buffer, and any changes made to Float32x4List will |
| /// also change the buffer, and vice versa. |
| /// @author ngl@unipro.ru |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| void check(ByteBuffer buffer){ |
| int bufSizeInBytes = buffer.lengthInBytes; |
| var res = buffer.asFloat32x4List(0); |
| Float32x4List res1 = buffer.asFloat32x4List(0); |
| int viewSizeInBytes = res.lengthInBytes; |
| int viewLength = res.length; |
| int shift = (Float32x4List.bytesPerElement == 16) ? 4 : 0; |
| |
| Expect.isTrue(res is Float32x4List); |
| Expect.runtimeIsType<Float32x4List>(res); |
| Expect.equals(bufSizeInBytes >> shift, viewLength); |
| |
| if (viewSizeInBytes != 0) { |
| Expect.equals(res1[0].x, res[0].x); |
| Expect.equals(res1[0].y, res[0].y); |
| Expect.equals(res1[0].z, res[0].z); |
| Expect.equals(res1[0].w, res[0].w); |
| |
| Float32x4 v1 = new Float32x4(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); |
| Expect.equals(v1.z, res[0].z); |
| Expect.equals(v1.w, res[0].w); |
| |
| Float32x4 v2 = new Float32x4(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.equals(v2.z, res[viewLength - 1].z); |
| Expect.equals(v2.w, res[viewLength - 1].w); |
| } |
| 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); |
| |
| if (!isJS) { |
| 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); |
| } |