Friday Puzzle #1

FridayPuzzle1.js

function oneMinus() {
    return (~1 + 1);
}

function isNegative(x) {
    return (x < 0);        
}

function plus(x,y) {
    return x+y;
}

function minus(x,y) {
    return x + (~y + 1);
}

function multi(x,y) {
    var result = 0;
    var count = 1;
    var tX = Math.abs(x);
    var tY = Math.abs(y);

    while (count <= tY) {
        result = result + tX;
        count = count + 1;
    }
    return (isNegative(x) != isNegative(y))? oneMinus() * result: result;
}

function div(x,y) {
    var result = 0;
    var tX = Math.abs(x);
    var tY = Math.abs(y);

    while (tX >= tY) {
        result = result + 1;
        tX = minus(tX,tY);
    }

    return (isNegative(x) != isNegative(y))? oneMinus() * result: result;
}