| '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; |
| } |
| */ |
| }; |