PLASMA  2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
int PLASMA_zgeqrf ( int  M,
int  N,
PLASMA_Complex64_t *  A,
int  LDA,
PLASMA_desc descT 
)

PLASMA_zgeqrf - Computes the tile QR factorization of a complex M-by-N matrix A: A = Q * R.

Parameters
[in]MThe number of rows of the matrix A. M >= 0.
[in]NThe number of columns of the matrix A. N >= 0.
[in,out]AOn entry, the M-by-N matrix A. On exit, the elements on and above the diagonal of the array contain the min(M,N)-by-N upper trapezoidal matrix R (R is upper triangular if M >= N); the elements below the diagonal represent the unitary matrix Q as a product of elementary reflectors stored by tiles.
[in]LDAThe leading dimension of the array A. LDA >= max(1,M).
[out]descTOn exit, auxiliary factorization data, required by PLASMA_zgeqrs to solve the system of equations.
Returns
Return values
PLASMA_SUCCESSsuccessful exit
<0if -i, the i-th argument had an illegal value
See also
PLASMA_zgeqrf_Tile
PLASMA_zgeqrf_Tile_Async
PLASMA_cgeqrf
PLASMA_dgeqrf
PLASMA_sgeqrf
PLASMA_zgeqrs