Absolute Test

var maxNum:int = 10000000;
var r:int;

function doShift():void
{
    for (var i:int = -maxNum; i<=maxNum; ++i) {
        r = i << 0 ? -i:i;
    }
}

function doAbs():void
{
    for (var i:int = -maxNum; i<=maxNum; ++i) {
        r = Math.abs(i);
    }
}

var t0:int = getTimer();
doAbs();
var t1:int = getTimer();
trace("Using Math.abs:  " + (t1-t0).toString() + " ms\n");

var t2:int = getTimer();
doShift();
var t3:int = getTimer();
trace("Using Bitwise shift:  " + (t3-t2).toString() + " ms\n");