mazze.js/Src/Math/extra.js

next gen javascript math library!

const errHandler = require('../Utils/errHandler')

module.exports = {
    ranStr: function(length) {
        if(!length) return errHandler.new("ranStr" , "length" , "15")
        if(!Number.isInteger(length)) return errHandler.invalid("Make sure (length) is a integer.")
        var result           = '';
        var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
        var charactersLength = characters.length;
        for ( var i = 0; i < length; i++ ) {
           result += characters.charAt(Math.floor(Math.random() * charactersLength));
        }
        return result;
    },
    seconds_to_days_hours_minutes_seconds: function(seconds){
        if(!seconds) return errHandler.new("secondsToDaysHoursMinutesSeconds" , "seconds" , "7767645")
        if(!Number.isInteger(seconds)) return errHandler.invalid("Make sure (seconds) is a integer.")
        var days     = Math.floor(seconds / (24*60*60));
            seconds -= days    * (24*60*60);
        var hours    = Math.floor(seconds / (60*60));
            seconds -= hours   * (60*60);
        var minutes  = Math.floor(seconds / (60));
            seconds -= minutes * (60);
        return ((0<days)?(days+" days, "):"")+hours+" hours, "+minutes+" minutes and "+seconds+" seconds";
    },
    seconds_to_hours_minutes_seconds: function(seconds){ 
        if(!seconds) return errHandler.new("secondsToHoursMinutesSeconds" , "seconds" , "276545")
        if(!Number.isInteger(seconds)) return errHandler.invalid("Make sure (seconds) is a integer.")
        var hours    = Math.floor(seconds / (60*60));
            seconds -= hours   * (60*60);
        var minutes  = Math.floor(seconds / (60));
            seconds -= minutes * (60);
        return ((0<hours)?(hours+" hours, "):"")+minutes+" minutes and "+seconds+" seconds";
    },
    seconds_to_minutes_seconds: function(seconds){ 
        if(!seconds) return errHandler.new("secondsToMinutesSeconds" , "seconds" , "16545")
        if(!Number.isInteger(seconds)) return errHandler.invalid("Make sure (seconds) is a integer.")
        var minutes  = Math.floor(seconds / (60));
            seconds -= minutes * (60);
        return ((0<minutes)?(minutes+" minutes and "):"")+seconds+" seconds";
    }
}

// function dtrm(a11 , a12 , a21 , a22){
//     const ans = (+a11 * +a22) - (+a12 * +a21)
//     return ans
// }

// function shdn(a , b , c , cox , coy , coz , con){
//     let sq = sqrt(cox**2+coy**2+coz**2)
//     let ans = abs((cox*a+coy*b+coz*c+con)/sq)
//     return ans.toFixed(4)
// }