Untitled

Reddits voting algorithm, javascript version
function getRating(t,u,d){

        var x = u-d;

        if(x > 0)
            y = 1
        else if(x == 0)
            y = 0
        else if(x < 0)
            y = -1

        var z = Math.max(1,Math.abs(x));

        return Math.log(z)/Math.log(10) + y*t/45000;

    }

console.log(getRating(50000, 25, 25)); //0

z = Math.max(1,Math.abs(x))