自动识别矩阵规模，进行QR分解运算，采用HouseHolder变换做成上Hessenberg矩阵，然后通过Givens变换做QR分解。(The size of the matrix is automatically identified, the QR decomposition operation is performed, the HouseHolder transform is used to make the upper Hessenberg matrix, and then the QR decomposition is done by the Givens transformation.)