25 lines
575 B
JavaScript
25 lines
575 B
JavaScript
'use strict';
|
|
|
|
var GetIntrinsic = require('get-intrinsic');
|
|
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
|
|
|
var isNaN = require('../../helpers/isNaN');
|
|
|
|
var Type = require('../Type');
|
|
|
|
// https://262.ecma-international.org/11.0/#sec-numeric-types-number-sameValueZero
|
|
|
|
module.exports = function NumberSameValueZero(x, y) {
|
|
if (Type(x) !== 'Number' || Type(y) !== 'Number') {
|
|
throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
|
|
}
|
|
|
|
var xNaN = isNaN(x);
|
|
var yNaN = isNaN(y);
|
|
if (xNaN || yNaN) {
|
|
return xNaN === yNaN;
|
|
}
|
|
return x === y;
|
|
};
|