1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// 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.getfloat64
description: >
Boolean littleEndian argument coerced in ToBoolean
info: |
24.2.4.6 DataView.prototype.getFloat64 ( 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, "Float64").
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, Symbol]
---*/
var buffer = new ArrayBuffer(8);
var sample = new DataView(buffer, 0);
sample.setUint8(0, 67);
sample.setUint8(1, 17);
sample.setUint8(2, 0);
sample.setUint8(3, 0);
sample.setUint8(4, 0);
sample.setUint8(5, 0);
sample.setUint8(6, 20);
sample.setUint8(7, 68);
// False
assert.sameValue(sample.getFloat64(0), 1196268651021585, "no arg");
assert.sameValue(sample.getFloat64(0, undefined), 1196268651021585, "undefined");
assert.sameValue(sample.getFloat64(0, null), 1196268651021585, "null");
assert.sameValue(sample.getFloat64(0, 0), 1196268651021585, "0");
assert.sameValue(sample.getFloat64(0, ""), 1196268651021585, "the empty string");
// True
assert.sameValue(sample.getFloat64(0, {}), 92233720368620160000, "{}");
assert.sameValue(sample.getFloat64(0, Symbol("1")), 92233720368620160000, "symbol");
assert.sameValue(sample.getFloat64(0, 1), 92233720368620160000, "1");
assert.sameValue(sample.getFloat64(0, "string"), 92233720368620160000, "string");
reportCompare(0, 0);
|
