中文说明:
所给的m文件中有详细的构造三对角分块矩阵的方法,而且构造的分块矩阵采用的是稀疏存储的方法,适用于大型三对角分块矩阵的构造。
English Description:
The given m file has a detailed method to construct tridiagonal block matrix, and the constructed block matrix adopts the method of sparse storage, which is suitable for the construction of large tridiagonal block matrix.