blob: 372bc5b7d77aa58611d0ce9d20adad843fd7e0e0 (
plain) (
blame)
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
|
'use strict';
module.exports = function round(value, precision, mode) {
// discuss at: http://locutus.io/php/round/
// original by: Philip Peterson
// revised by: Onno Marsman (https://twitter.com/onnomarsman)
// revised by: T.Wild
// revised by: Rafał Kukawski (http://blog.kukawski.pl)
// input by: Greenseed
// input by: meo
// input by: William
// input by: Josep Sanz (http://www.ws3.es/)
// bugfixed by: Brett Zamir (http://brett-zamir.me)
// note 1: Great work. Ideas for improvement:
// note 1: - code more compliant with developer guidelines
// note 1: - for implementing PHP constant arguments look at
// note 1: the pathinfo() function, it offers the greatest
// note 1: flexibility & compatibility possible
// example 1: round(1241757, -3)
// returns 1: 1242000
// example 2: round(3.6)
// returns 2: 4
// example 3: round(2.835, 2)
// returns 3: 2.84
// example 4: round(1.1749999999999, 2)
// returns 4: 1.17
// example 5: round(58551.799999999996, 2)
// returns 5: 58551.8
var m, f, isHalf, sgn; // helper variables
// making sure precision is integer
precision |= 0;
m = Math.pow(10, precision);
value *= m;
// sign of the number
sgn = value > 0 | -(value < 0);
isHalf = value % 1 === 0.5 * sgn;
f = Math.floor(value);
if (isHalf) {
switch (mode) {
case 'PHP_ROUND_HALF_DOWN':
// rounds .5 toward zero
value = f + (sgn < 0);
break;
case 'PHP_ROUND_HALF_EVEN':
// rouds .5 towards the next even integer
value = f + f % 2 * sgn;
break;
case 'PHP_ROUND_HALF_ODD':
// rounds .5 towards the next odd integer
value = f + !(f % 2);
break;
default:
// rounds .5 away from zero
value = f + (sgn > 0);
}
}
return (isHalf ? value : Math.round(value)) / m;
};
//# sourceMappingURL=round.js.map
|
