| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-dataview.prototype.getint16 |
| description: > |
| Return values from Buffer |
| info: | |
| 24.2.4.8 DataView.prototype.getInt16 ( byteOffset [ , littleEndian ] ) |
| |
| 1. Let v be the this value. |
| 2. If littleEndian is not present, let littleEndian be false. |
| 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int16"). |
| |
| 24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type ) |
| |
| ... |
| 14. Let bufferIndex be getIndex + viewOffset. |
| 15. Return GetValueFromBuffer(buffer, bufferIndex, type, isLittleEndian). |
| ... |
| |
| 24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type [ , isLittleEndian |
| ] ) |
| |
| ... |
| 8. If isLittleEndian is false, reverse the order of the elements of rawValue. |
| ... |
| features: [DataView.prototype.setUint8] |
| ---*/ |
| |
| var buffer = new ArrayBuffer(8); |
| var sample = new DataView(buffer, 0); |
| |
| sample.setUint8(0, 127); |
| sample.setUint8(1, 255); |
| sample.setUint8(2, 255); |
| sample.setUint8(3, 255); |
| sample.setUint8(4, 128); |
| sample.setUint8(5, 0); |
| sample.setUint8(6, 1); |
| sample.setUint8(7, 0); |
| |
| assert.sameValue(sample.getInt16(0, false), 32767, "0, false"); |
| assert.sameValue(sample.getInt16(1, false), -1, "1, false"); |
| assert.sameValue(sample.getInt16(2, false), -1, "2, false"); |
| assert.sameValue(sample.getInt16(3, false), -128, "3, false"); |
| assert.sameValue(sample.getInt16(4, false), -32768, "4, false"); |
| assert.sameValue(sample.getInt16(5, false), 1, "5, false"); |
| assert.sameValue(sample.getInt16(6, false), 256, "8, false"); |
| |
| assert.sameValue(sample.getInt16(0, true), -129, "0, true"); |
| assert.sameValue(sample.getInt16(1, true), -1, "1, true"); |
| assert.sameValue(sample.getInt16(2, true), -1, "2, true"); |
| assert.sameValue(sample.getInt16(3, true), -32513, "3, true"); |
| assert.sameValue(sample.getInt16(4, true), 128, "4, true"); |
| assert.sameValue(sample.getInt16(5, true), 256, "5, true"); |
| assert.sameValue(sample.getInt16(6, true), 1, "6, true"); |