cholesky_decomp col_sum column_sum copy dimensions fprintf fread fscanf fwrite get_col get_cols get_element get_row get_rows gslobj gslobj LU_decomp LU_invert LU_lndet m matrix_int matrix_int matrix_int matrix_int max min operator!= operator() operator() operator* operator* operator*= operator+ operator+ operator+ operator+= operator+= operator- operator- operator- operator-= operator-= operator/ operator/= operator= operator= operator== row_sum row_sum set_all set_dimensions set_element set_elements set_zero size1 size2 submatrix sum trace transpose ~matrix_int