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
|
/* 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/. */
/*global intl_NumberFormat: false, */
var numberFormatCache = new Record();
/**
* Format this Number object into a string, using the locale and formatting options
* provided.
*
* Spec: ECMAScript Language Specification, 5.1 edition, 15.7.4.3.
* Spec: ECMAScript Internationalization API Specification, 13.2.1.
*/
function Number_toLocaleString() {
// Steps 1-2. Note that valueOf enforces "this Number value" restrictions.
var x = callFunction(std_Number_valueOf, this);
// Steps 2-3.
var locales = arguments.length > 0 ? arguments[0] : undefined;
var options = arguments.length > 1 ? arguments[1] : undefined;
// Step 4.
var numberFormat;
if (locales === undefined && options === undefined) {
// This cache only optimizes for the old ES5 toLocaleString without
// locales and options.
if (numberFormatCache.numberFormat === undefined)
numberFormatCache.numberFormat = intl_NumberFormat(locales, options);
numberFormat = numberFormatCache.numberFormat;
} else {
numberFormat = intl_NumberFormat(locales, options);
}
// Step 5.
return intl_FormatNumber(numberFormat, x, /* formatToParts = */ false);
}
// ES6 draft ES6 20.1.2.4
function Number_isFinite(num) {
if (typeof num !== "number")
return false;
return num - num === 0;
}
// ES6 draft ES6 20.1.2.2
function Number_isNaN(num) {
if (typeof num !== "number")
return false;
return num !== num;
}
// ES6 draft ES6 20.1.2.5
function Number_isSafeInteger(number) {
// Step 1.
if (typeof number !== 'number')
return false;
// Step 2.
if (!Number_isFinite(number))
return false;
// Step 3.
var integer = ToInteger(number);
// Step 4.
if (integer !== number)
return false;
// Step 5. If abs(integer) <= 2**53 - 1, return true.
if (std_Math_abs(integer) <= 9007199254740991)
return true;
// Step 6.
return false;
}
function Global_isNaN(number) {
return Number_isNaN(ToNumber(number));
}
function Global_isFinite(number){
return Number_isFinite(ToNumber(number));
}
|
