This repository has been archived by the owner on Apr 22, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 7.3k
/
test-writedouble.js
129 lines (120 loc) · 4.37 KB
/
test-writedouble.js
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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
/*
* Tests to verify we're writing doubles correctly
*/
var SlowBuffer = process.binding('buffer').SlowBuffer;
var ASSERT = require('assert');
function test(clazz) {
var buffer = new clazz(16);
buffer.writeDoubleBE(2.225073858507201e-308, 0);
buffer.writeDoubleLE(2.225073858507201e-308, 8);
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.writeDoubleBE(1.0000000000000004, 0);
buffer.writeDoubleLE(1.0000000000000004, 8);
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.writeDoubleBE(-2, 0);
buffer.writeDoubleLE(-2, 8);
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.writeDoubleBE(1.7976931348623157e+308, 0);
buffer.writeDoubleLE(1.7976931348623157e+308, 8);
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.writeDoubleBE(0 * -1, 0);
buffer.writeDoubleLE(0 * -1, 8);
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(Buffer);
test(SlowBuffer);