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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
File Name: 11.4.8.js
ECMA Section: 11.4.8 Bitwise NOT Operator
Description: flip bits up to 32 bits
no special cases
Author: christine@netscape.com
Date: 7 july 1997
Data File Fields:
VALUE value passed as an argument to the ~ operator
E_RESULT expected return value of ~ VALUE;
Static variables:
none
*/
var SECTION = "11.4.8";
var VERSION = "ECMA_1";
startTest();
writeHeaderToLog( SECTION + " Bitwise Not operator");
for ( var i = 0; i < 35; i++ ) {
var p = Math.pow(2,i);
new TestCase( SECTION, "~"+p, Not(p), ~p );
}
for ( i = 0; i < 35; i++ ) {
var p = -Math.pow(2,i);
new TestCase( SECTION, "~"+p, Not(p), ~p );
}
test();
function ToInteger( n ) {
n = Number( n );
var sign = ( n < 0 ) ? -1 : 1;
if ( n != n ) {
return 0;
}
if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY ) {
return n;
}
return ( sign * Math.floor(Math.abs(n)) );
}
function ToInt32( n ) {
n = Number( n );
var sign = ( n < 0 ) ? -1 : 1;
if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
return 0;
}
n = (sign * Math.floor( Math.abs(n) )) % Math.pow(2,32);
n = ( n >= Math.pow(2,31) ) ? n - Math.pow(2,32) : n;
return ( n );
}
function ToUint32( n ) {
n = Number( n );
var sign = ( n < 0 ) ? -1 : 1;
if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
return 0;
}
n = sign * Math.floor( Math.abs(n) )
n = n % Math.pow(2,32);
if ( n < 0 ){
n += Math.pow(2,32);
}
return ( n );
}
function ToUint16( n ) {
var sign = ( n < 0 ) ? -1 : 1;
if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
return 0;
}
n = ( sign * Math.floor( Math.abs(n) ) ) % Math.pow(2,16);
if (n <0) {
n += Math.pow(2,16);
}
return ( n );
}
function Mask( b, n ) {
b = ToUint32BitString( b );
b = b.substring( b.length - n );
b = ToUint32Decimal( b );
return ( b );
}
function ToUint32BitString( n ) {
var b = "";
for ( var p = 31; p >=0; p-- ) {
if ( n >= Math.pow(2,p) ) {
b += "1";
n -= Math.pow(2,p);
} else {
b += "0";
}
}
return b;
}
function ToInt32BitString( n ) {
var b = "";
var sign = ( n < 0 ) ? -1 : 1;
b += ( sign == 1 ) ? "0" : "1";
for ( var p = 30; p >=0; p-- ) {
if ( (sign == 1 ) ? sign * n >= Math.pow(2,p) : sign * n > Math.pow(2,p) ) {
b += ( sign == 1 ) ? "1" : "0";
n -= sign * Math.pow( 2, p );
} else {
b += ( sign == 1 ) ? "0" : "1";
}
}
return b;
}
function ToInt32Decimal( bin ) {
var r = 0;
var sign;
if ( Number(bin.charAt(0)) == 0 ) {
sign = 1;
r = 0;
} else {
sign = -1;
r = -(Math.pow(2,31));
}
for ( var j = 0; j < 31; j++ ) {
r += Math.pow( 2, j ) * Number(bin.charAt(31-j));
}
return r;
}
function ToUint32Decimal( bin ) {
var r = 0;
for ( var l = bin.length; l < 32; l++ ) {
bin = "0" + bin;
}
for ( var j = 0; j < 31; j++ ) {
r += Math.pow( 2, j ) * Number(bin.charAt(31-j));
}
return r;
}
function Not( n ) {
n = ToInt32(n);
n = ToInt32BitString(n);
var r = "";
for( var l = 0; l < n.length; l++ ) {
r += ( n.charAt(l) == "0" ) ? "1" : "0";
}
n = ToInt32Decimal(r);
return n;
}
|
