Math 類的方法概要

用sivlerlight做動畫和特效時經常會用到Math類，總結一下。
參考：http://www.cnblogs.com/del/archive/2011/01/03/1924746.html

//返回數位絕對值Console.WriteLine(Math.Abs(-10));//向上進位取整Console.WriteLine(Math.Ceiling(32.1));//33Console.WriteLine(Math.Ceiling(32.0));//32Console.WriteLine(Math.Ceiling(-32.1));//32Console.WriteLine(Math.Ceiling((decimal)(7 + 9) / 10));//向下舍位取整Console.WriteLine(Math.Floor(32.9));//32Console.WriteLine(Math.Floor(32.0));//32Console.WriteLine(Math.Floor(-32.5));       //-33Console.WriteLine(Math.Max(1, 9));//9Console.WriteLine(Math.Min(1, 9));//1Console.WriteLine(Math.Pow(2, 3));//8//取指定位元的小數 四捨六入五考慮，五後非零就進一，五後皆零看奇偶，五前為偶應舍 去，五前為奇要進一Math.Round(0.5);  // 0Math.Round(1.5);  // 2Math.Round(2.5);  // 2Math.Round(3.5);  // 4Math.Round(-0.5); // 0Math.Round(-1.5); //-2Math.Round(-2.5); //-2Math.Round(-3.5); //-4Math.Round(0.5, MidpointRounding.AwayFromZero);  // 1Math.Round(1.5, MidpointRounding.AwayFromZero);  // 2 Math.Round(2.5, MidpointRounding.AwayFromZero);  // 3Math.Round(3.5, MidpointRounding.AwayFromZero);  // 4 Math.Round(-0.5, MidpointRounding.AwayFromZero); //-1Math.Round(-1.5, MidpointRounding.AwayFromZero); //-2Math.Round(-2.5, MidpointRounding.AwayFromZero); //-3Math.Round(-3.5, MidpointRounding.AwayFromZero); //-4Console.WriteLine(Math.Round(3.4452, 2));//3.45 Console.WriteLine(Math.Round(3.4552, 2));//3.46;Console.WriteLine(Math.Round(3.4652, 2));//3.47;Console.WriteLine(System.Double.NaN);//非數字Console.WriteLine(System.Double.NegativeInfinity);//負無窮大Console.WriteLine(System.Double.PositiveInfinity);//正無窮大