Constnium/node_modules/es-abstract/2022/Number/multiply.js
2022-06-23 02:27:43 +02:00

33 lines
848 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-multiply
module.exports = function NumberMultiply(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 === 0 && !isFinite(y)) || (!isFinite(x) && y === 0)) {
return NaN;
}
if (!isFinite(x) && !isFinite(y)) {
return x === y ? Infinity : -Infinity;
}
if (!isFinite(x) && y !== 0) {
return x > 0 ? Infinity : -Infinity;
}
if (!isFinite(y) && x !== 0) {
return y > 0 ? Infinity : -Infinity;
}
// shortcut for the actual spec mechanics
return x * y;
};