package com.greensock.easing {
    public class Back {
        public static function easeIn (t:Number, b:Number, c:Number, d:Number, s:Number = 1.70158):Number {
            return c*(t/=d)*t*((s+1)*t - s) + b;
        }
        public static function easeOut (t:Number, b:Number, c:Number, d:Number, s:Number = 1.70158):Number {
            return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
        }
        public static function easeInOut (t:Number, b:Number, c:Number, d:Number, s:Number = 1.70158):Number {
            if ((t/=d*0.5) < 1) return c*0.5*(t*t*(((s*=(1.525))+1)*t - s)) + b;
            return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
        }
    }
}