locutus/esm/ruby/Math/acos.js

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

export function acos(arg) {
    //  discuss at: https://locutus.io/ruby/Math/acos/
    // original by: Onno Marsman (https://twitter.com/onnomarsman)
    //      note 1: Sorry about the crippled test.
    //      note 1: Needed because precision differs accross platforms.
    //   example 1: (acos(0.3) + '').substr(0, 17)
    //   returns 1: '1.266103672779499'
    return Math.acos(arg);
}