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