lapacke_cgemqr.c

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* Contents: Native high-level C interface to LAPACK function cgemqr
* Author: Intel Corporation
*****************************************************************************/

#include"lapacke_utils.h"

lapack_intLAPACKE_cgemqr( intmatrix_layout, charside, chartrans,
lapack_intm, lapack_intn, lapack_intk,
constlapack_complex_float*a, lapack_intlda,
constlapack_complex_float*t, lapack_inttsize,
lapack_complex_float*c, lapack_intldc )
{
lapack_intinfo=0;
lapack_intlwork=-1;
lapack_complex_float*work=NULL;
lapack_complex_floatwork_query;
lapack_intr;
if( matrix_layout!=LAPACK_COL_MAJOR&&matrix_layout!=LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_cgemqr", -1 );
return-1;
 }
#ifndefLAPACK_DISABLE_NAN_CHECK
if( LAPACKE_get_nancheck() ) {
/* Optionally check input matrices for NaNs */
r=LAPACKE_lsame( side, 'l' ) ? m : n;
if( LAPACKE_cge_nancheck( matrix_layout, r, k, a, lda ) ) {
return-7;
 }
if( LAPACKE_cge_nancheck( matrix_layout, m, n, c, ldc ) ) {
return-10;
 }
if( LAPACKE_c_nancheck( tsize, t, 1 ) ) {
return-9;
 }
 }
#endif
/* Query optimal working array(s) size */
info=LAPACKE_cgemqr_work( matrix_layout, side, trans, m, n, k, a, lda,
t, tsize, c, ldc, &work_query, lwork );
if( info!=0 ) {
 goto exit_level_0;
 }
lwork=LAPACK_C2INT( work_query );
/* Allocate memory for work arrays */
work= (lapack_complex_float*)
LAPACKE_malloc( sizeof(lapack_complex_float) *lwork );
if( work==NULL ) {
info=LAPACK_WORK_MEMORY_ERROR;
 goto exit_level_0;
 }
/* Call middle-level interface */
info=LAPACKE_cgemqr_work( matrix_layout, side, trans, m, n, k, a, lda,
t, tsize, c, ldc, work, lwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info==LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_cgemqr", info );
 }
returninfo;
}