[Directly accessing /using ease functions]

Is there a way to directly use the penner easing functions (and other) included in GSAP?

 

I run my own update loop (on Scroll) and just want to pass my values through the easing functions to make everything a tiny bit more awesome.

 

Example of what I would like to do. passing in p (value of 0 to 1) start value 0, change value 1, and duration 1.

Power2.easeInOut(p,0,1,1);

right now I define the functions again in my code like this:

 

var easeInSine = function (t, b, c, d) {
return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
}
easeInSine(p,0,1,1);

would be great to hook into the greatness of Greensock instead of defining them again.

 

I'm using the latest js and tweenmax.