source: imaps-frontend/node_modules/es-abstract/2021/Number/multiply.js

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Last change on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago

Update repo after prototype presentation

  • Property mode set to 100644
File size: 770 bytes
RevLine 
[d565449]1'use strict';
2
3var $TypeError = require('es-errors/type');
4
5var isNaN = require('../../helpers/isNaN');
6
7// https://262.ecma-international.org/11.0/#sec-numeric-types-number-multiply
8
9module.exports = function NumberMultiply(x, y) {
10 if (typeof x !== 'number' || typeof y !== 'number') {
11 throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
12 }
13
14 if (isNaN(x) || isNaN(y) || (x === 0 && !isFinite(y)) || (!isFinite(x) && y === 0)) {
15 return NaN;
16 }
17 if (!isFinite(x) && !isFinite(y)) {
18 return x === y ? Infinity : -Infinity;
19 }
20 if (!isFinite(x) && y !== 0) {
21 return x > 0 ? Infinity : -Infinity;
22 }
23 if (!isFinite(y) && x !== 0) {
24 return y > 0 ? Infinity : -Infinity;
25 }
26
27 // shortcut for the actual spec mechanics
28 return x * y;
29};
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