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74 lines
1.7 KiB
74 lines
1.7 KiB
'use strict'; |
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// var isNegativeZero = require('math-intrinsics/isNegativeZero'); |
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var $pow = require('math-intrinsics/pow'); |
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var $TypeError = require('es-errors/type'); |
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/* |
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var abs = require('math-intrinsics/abs'); |
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var isFinite = require('math-intrinsics/isFinite'); |
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var isNaN = require('math-intrinsics/isNaN'); |
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var IsInteger = require('math-intrinsics/isInteger'); |
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*/ |
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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 (typeof base !== 'number' || typeof 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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