lapacke_cunmqr.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_cunmqr (int matrix_layout, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const lapack_complex_float *a, lapack_int lda, const lapack_complex_float *tau, lapack_complex_float *c, lapack_int ldc)

Function Documentation

LAPACKE_cunmqr()

lapack_int LAPACKE_cunmqr	(	int	matrix_layout,
		char	side,
		char	trans,
		lapack_int	m,
		lapack_int	n,
		lapack_int	k,
		const lapack_complex_float *	a,
		lapack_int	lda,
		const lapack_complex_float *	tau,
		lapack_complex_float *	c,
		lapack_int	ldc )

Definition at line 35 of file lapacke_cunmqr.c.

{
    lapack_int info = 0;
    lapack_int lwork = -1;
    lapack_complex_float* work = NULL;
    lapack_complex_float work_query;
    lapack_int r;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_cunmqr", -1 );
        return -1;
    }
#ifndef LAPACK_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( k, tau, 1 ) ) {
            return -9;
        }
    }
#endif
    /* Query optimal working array(s) size */
    info = LAPACKE_cunmqr_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
                                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_cunmqr_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
                                c, ldc, work, lwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_cunmqr", info );
    }
    return info;
}