You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
875 B
37 lines
875 B
2 years ago
|
'use strict';
|
||
|
|
|
||
|
|
var GetIntrinsic = require('get-intrinsic');
|
||
|
|
|
||
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
||
|
|
|
||
|
|
var isFinite = require('../../helpers/isFinite');
|
||
|
|
var isNaN = require('../../helpers/isNaN');
|
||
|
|
|
||
|
|
var Type = require('../Type');
|
||
|
|
|
||
|
|
// https://262.ecma-international.org/12.0/#sec-numeric-types-number-add
|
||
|
|
|
||
|
|
module.exports = function NumberAdd(x, y) {
|
||
|
|
if (Type(x) !== 'Number' || Type(y) !== 'Number') {
|
||
|
|
throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isNaN(x) || isNaN(y) || (x === Infinity && y === -Infinity) || (x === -Infinity && y === Infinity)) {
|
||
|
|
return NaN;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!isFinite(x)) {
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
if (!isFinite(y)) {
|
||
|
|
return y;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (x === y && x === 0) { // both zeroes
|
||
|
|
return Infinity / x === -Infinity && Infinity / y === -Infinity ? -0 : +0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// shortcut for the actual spec mechanics
|
||
|
|
return x + y;
|
||
|
|
};
|