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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/*
* Tests to verify we're writing doubles correctly
*/
var ASSERT = require('assert');
function test() {
var buffer = new Buffer(16);
buffer.writeDouble(2.225073858507201e-308, 0, true);
buffer.writeDouble(2.225073858507201e-308, 8, false);
ASSERT.equal(0x00, buffer[0]);
ASSERT.equal(0x0f, buffer[1]);
ASSERT.equal(0xff, buffer[2]);
ASSERT.equal(0xff, buffer[3]);
ASSERT.equal(0xff, buffer[4]);
ASSERT.equal(0xff, buffer[5]);
ASSERT.equal(0xff, buffer[6]);
ASSERT.equal(0xff, buffer[7]);
ASSERT.equal(0xff, buffer[8]);
ASSERT.equal(0xff, buffer[9]);
ASSERT.equal(0xff, buffer[10]);
ASSERT.equal(0xff, buffer[11]);
ASSERT.equal(0xff, buffer[12]);
ASSERT.equal(0xff, buffer[13]);
ASSERT.equal(0x0f, buffer[14]);
ASSERT.equal(0x00, buffer[15]);
buffer.writeDouble(1.0000000000000004, 0, true);
buffer.writeDouble(1.0000000000000004, 8, false);
ASSERT.equal(0x3f, buffer[0]);
ASSERT.equal(0xf0, buffer[1]);
ASSERT.equal(0x00, buffer[2]);
ASSERT.equal(0x00, buffer[3]);
ASSERT.equal(0x00, buffer[4]);
ASSERT.equal(0x00, buffer[5]);
ASSERT.equal(0x00, buffer[6]);
ASSERT.equal(0x02, buffer[7]);
ASSERT.equal(0x02, buffer[8]);
ASSERT.equal(0x00, buffer[9]);
ASSERT.equal(0x00, buffer[10]);
ASSERT.equal(0x00, buffer[11]);
ASSERT.equal(0x00, buffer[12]);
ASSERT.equal(0x00, buffer[13]);
ASSERT.equal(0xf0, buffer[14]);
ASSERT.equal(0x3f, buffer[15]);
buffer.writeDouble(-2, 0, true);
buffer.writeDouble(-2, 8, false);
ASSERT.equal(0xc0, buffer[0]);
ASSERT.equal(0x00, buffer[1]);
ASSERT.equal(0x00, buffer[2]);
ASSERT.equal(0x00, buffer[3]);
ASSERT.equal(0x00, buffer[4]);
ASSERT.equal(0x00, buffer[5]);
ASSERT.equal(0x00, buffer[6]);
ASSERT.equal(0x00, buffer[7]);
ASSERT.equal(0x00, buffer[8]);
ASSERT.equal(0x00, buffer[9]);
ASSERT.equal(0x00, buffer[10]);
ASSERT.equal(0x00, buffer[11]);
ASSERT.equal(0x00, buffer[12]);
ASSERT.equal(0x00, buffer[13]);
ASSERT.equal(0x00, buffer[14]);
ASSERT.equal(0xc0, buffer[15]);
buffer.writeDouble(1.7976931348623157e+308, 0, true);
buffer.writeDouble(1.7976931348623157e+308, 8, false);
ASSERT.equal(0x7f, buffer[0]);
ASSERT.equal(0xef, buffer[1]);
ASSERT.equal(0xff, buffer[2]);
ASSERT.equal(0xff, buffer[3]);
ASSERT.equal(0xff, buffer[4]);
ASSERT.equal(0xff, buffer[5]);
ASSERT.equal(0xff, buffer[6]);
ASSERT.equal(0xff, buffer[7]);
ASSERT.equal(0xff, buffer[8]);
ASSERT.equal(0xff, buffer[9]);
ASSERT.equal(0xff, buffer[10]);
ASSERT.equal(0xff, buffer[11]);
ASSERT.equal(0xff, buffer[12]);
ASSERT.equal(0xff, buffer[13]);
ASSERT.equal(0xef, buffer[14]);
ASSERT.equal(0x7f, buffer[15]);
buffer.writeDouble(0*-1, 0, true);
buffer.writeDouble(0*-1, 8, false);
ASSERT.equal(0x80, buffer[0]);
ASSERT.equal(0x00, buffer[1]);
ASSERT.equal(0x00, buffer[2]);
ASSERT.equal(0x00, buffer[3]);
ASSERT.equal(0x00, buffer[4]);
ASSERT.equal(0x00, buffer[5]);
ASSERT.equal(0x00, buffer[6]);
ASSERT.equal(0x00, buffer[7]);
ASSERT.equal(0x00, buffer[8]);
ASSERT.equal(0x00, buffer[9]);
ASSERT.equal(0x00, buffer[10]);
ASSERT.equal(0x00, buffer[11]);
ASSERT.equal(0x00, buffer[12]);
ASSERT.equal(0x00, buffer[13]);
ASSERT.equal(0x00, buffer[14]);
ASSERT.equal(0x80, buffer[15]);
}
test();
|