14 lines
316 B
JavaScript
14 lines
316 B
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var $isNaN = require('../helpers/isNaN');
|
||
|
|
|
||
|
|
// http://www.ecma-international.org/ecma-262/5.1/#sec-9.12
|
||
|
|
|
||
|
|
module.exports = function SameValue(x, y) {
|
||
|
|
if (x === y) { // 0 === -0, but they are not identical.
|
||
|
|
if (x === 0) { return 1 / x === 1 / y; }
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return $isNaN(x) && $isNaN(y);
|
||
|
|
};
|