拉格朗日差值算法，可直接生成动态连接库调用-Lagrangian difference algorithm can directly generate dynamic link library calls

拉格朗日插值法进行曲线拟合插值，适合于按照曲线坐标进行相邻点进行插值-Perform interpolation Lagrange polynomial curve fitting, curve coordinates adapted to be adjacent interpolation points