MyMath.jack

class MyMath {

    //x%y
    function int mod(int x, int y) {
        return (x - (y * (x/y)) );
    }

    //returns x/y, rounded up if there is any remainder
    function int ceilDiv(int x, int y) {
        var int quot, ret;

        let quot = x/y;
        if (MyMath.mod(x, y)) {
            return quot + 1;
        }
        return quot;
    }

    //returns rounded quotient (5 rounds down)
    function int roundDiv(int x, int y) {
        var int quot, r, ret;

        let quot = x/y;
        if (MyMath.mod(x,y) > (quot/2)) {
            return quot + 1;
        }
        return quot;
    }

    //x**y
    function int pow(int x, int y) {
        var int ret;
        let ret = 1;
        while (y > 0) {
            let ret = ret * x;
            let y = y - 1;
        }
        return ret;
    }
}