Intel® oneAPI Math Kernel Library Developer Reference - C
Factorization step of the SPARSE QR solver.
sparse_status_t mkl_sparse_d_qr_factorize (sparse_matrix_t A, double *alt_values);
sparse_status_t mkl_sparse_s_qr_factorize (sparse_matrix_t A, float *alt_values);
The mkl_sparse_?_qr_factorize routine perform numerical factorization of matrix A.
Handle containing a sparse matrix in an internal data structure.
Array with alternative values. Must be the size of the non-zeroes in the initial input matrix. When passed to the routine, these values will be used during the factorization step instead of the values stored in handle A.