source: frontend/node_modules/es-abstract/2020/Number/multiply.js

'use strict';

var $TypeError = require('es-errors/type');
var isFinite = require('math-intrinsics/isFinite');

var isNaN = require('../../helpers/isNaN');

// https://262.ecma-international.org/11.0/#sec-numeric-types-number-multiply

module.exports = function NumberMultiply(x, y) {
        if (typeof x !== 'number' || typeof 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;
};