Constnium/node_modules/es-abstract/2020/Number/exponentiate.js
2022-06-23 02:27:43 +02:00

77 lines
1.7 KiB
JavaScript

'use strict';
var GetIntrinsic = require('get-intrinsic');
// var isNegativeZero = require('is-negative-zero');
var $pow = GetIntrinsic('%Math.pow%');
var $TypeError = GetIntrinsic('%TypeError%');
/*
var abs = require('../../helpers/abs');
var isFinite = require('../../helpers/isFinite');
var isNaN = require('../../helpers/isNaN');
var IsInteger = require('../IsInteger');
*/
var Type = require('../Type');
// https://262.ecma-international.org/11.0/#sec-numeric-types-number-exponentiate
/* eslint max-lines-per-function: 0, max-statements: 0 */
module.exports = function NumberExponentiate(base, exponent) {
if (Type(base) !== 'Number' || Type(exponent) !== 'Number') {
throw new $TypeError('Assertion failed: `base` and `exponent` arguments must be Numbers');
}
return $pow(base, exponent);
/*
if (isNaN(exponent)) {
return NaN;
}
if (exponent === 0) {
return 1;
}
if (isNaN(base)) {
return NaN;
}
var aB = abs(base);
if (aB > 1 && exponent === Infinity) {
return Infinity;
}
if (aB > 1 && exponent === -Infinity) {
return 0;
}
if (aB === 1 && (exponent === Infinity || exponent === -Infinity)) {
return NaN;
}
if (aB < 1 && exponent === Infinity) {
return +0;
}
if (aB < 1 && exponent === -Infinity) {
return Infinity;
}
if (base === Infinity) {
return exponent > 0 ? Infinity : 0;
}
if (base === -Infinity) {
var isOdd = true;
if (exponent > 0) {
return isOdd ? -Infinity : Infinity;
}
return isOdd ? -0 : 0;
}
if (exponent > 0) {
return isNegativeZero(base) ? Infinity : 0;
}
if (isNegativeZero(base)) {
if (exponent > 0) {
return isOdd ? -0 : 0;
}
return isOdd ? -Infinity : Infinity;
}
if (base < 0 && isFinite(base) && isFinite(exponent) && !IsInteger(exponent)) {
return NaN;
}
*/
};