| /* |
| * 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 getUint64( |
| * int byteOffset, [ |
| * Endian endian = Endian.big |
| * ]) |
| * Returns the positive integer represented by the eight bytes starting at the |
| * specified [byteOffset] in this object, in unsigned binary form. |
| * The return value will be between 0 and pow(2, 64) - 1, inclusive. |
| * @description Checks that the correct value is returned. |
| * @author msyabro |
| */ |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var u64 = new Uint64List.fromList([ |
| 0, 1, 9223372036854775807, 1844674407370955161, 12, 54, 100, 23, 98, |
| 23, 43, 15, 3 |
| ]); |
| var u32 = new Uint32List.fromList( |
| [0x62e7a17b, 0xf7ec7100, 0xe7180101, 0x1f83ccbb]); |
| int bytesInElement = Uint64List.bytesPerElement; |
| |
| var byteDataFromU64 = new ByteData.view(u64.buffer); |
| for (int i = 0; i < byteDataFromU64.lengthInBytes / bytesInElement; ++i) { |
| Expect.equals(u64[i], |
| byteDataFromU64.getUint64(i*bytesInElement, Endian.little)); |
| } |
| |
| var byteDataFromU32 = new ByteData.view(u32.buffer); |
| var expectedBigEndian = [8908655946015829239, 72366452581892895]; |
| var expectedLittleEndian = [-581966005364350597, 2270883744532922625]; |
| for (int i = 0; i < byteDataFromU32.lengthInBytes / bytesInElement; ++i) { |
| Expect.equals(expectedBigEndian[i], |
| byteDataFromU32.getUint64(i * bytesInElement, Endian.big)); |
| Expect.equals(expectedLittleEndian[i], |
| byteDataFromU32.getUint64( |
| i * bytesInElement, Endian.little)); |
| } |
| } |