locutus/esm/php/math/log.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

export function log(arg, base) {
    //      discuss at: https://locutus.io/php/log/
    // parity verified: PHP 8.3
    //     original by: Onno Marsman (https://twitter.com/onnomarsman)
    //     improved by: Brett Zamir (https://brett-zamir.me)
    //       example 1: log(8723321.4, 7)
    //       returns 1: 8.212871815082147
    return typeof base === 'undefined' ? Math.log(arg) : Math.log(arg) / Math.log(base);
}