C#编写的三次样条插值函数，TSS法求解对角矩阵方程函数，插值点函数值计算函数。-prepared by the cubic spline interpolation function, TSS method diagonal matrix equation function, interpolation function point value function.

求解三对角矩阵的时候可以用追赶法解方程组的解，文件为追赶法例程，附带Crank-Nicolson格式解对流方程算法(When solving tridiagonal matrix, we can use catch-up method to solve the solution of equations. The file is catch-up method routine, with crank Nicolson scheme to solve the convection equation