求圆周率的C#原代码

在数值计算中，一般的牛顿迭代法得到的数值具有截断误差，因此，用C#编写的可是实现任意精度的圆周率的计算程序-seeking ratio of the circumference C# source in numerical calculation, the general Newton iterative numerical method with the truncation error and therefore C# prepared But to achieve any degree of accuracy the circumference of the rate calculation procedures