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
|
var assert = require('assert')
var UINT32 = require('..').UINT32
describe('multiply method', function () {
describe('0*0', function () {
it('should return 0', function (done) {
var u = UINT32(0).multiply( UINT32(0) )
assert.equal( u.toNumber(), 0 )
done()
})
})
describe('1*0', function () {
it('should return 0', function (done) {
var u = UINT32(1).multiply( UINT32(0) )
assert.equal( u.toNumber(), 0 )
done()
})
})
describe('0*1', function () {
it('should return 0', function (done) {
var u = UINT32(0).multiply( UINT32(1) )
assert.equal( u.toNumber(), 0 )
done()
})
})
describe('low bit*high bit', function () {
it('should return n', function (done) {
var n = Math.pow(2, 17)
var u = UINT32(3).multiply( UINT32(n) )
assert.equal( u.toNumber(), 3*n )
done()
})
})
describe('high bit*low bit', function () {
it('should return n', function (done) {
var n = Math.pow(2, 17)
var u = UINT32(n).multiply( UINT32(3) )
assert.equal( u.toNumber(), 3*n )
done()
})
})
describe('high bit*high bit', function () {
it('should return n', function (done) {
var n = 'FFFFFFFF'
var u = UINT32(n, 16).multiply( UINT32(n, 16) )
assert.equal( u.toNumber(), 1 )
done()
})
})
})
|