lapacke_zgemqrt.c

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******************************************************************************
* Contents: Native high-level C interface to LAPACK function zgemqrt
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_zgemqrt( int matrix_layout, char side, char trans,
                            lapack_int m, lapack_int n, lapack_int k,
                            lapack_int nb, const lapack_complex_double* v,
                            lapack_int ldv, const lapack_complex_double* t,
                            lapack_int ldt, lapack_complex_double* c,
                            lapack_int ldc )
{
    lapack_int nrows_v;
    lapack_int info = 0;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zgemqrt", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        nrows_v = LAPACKE_lsame( side, 'L' ) ? m :
                             ( LAPACKE_lsame( side, 'R' ) ? n : 0 );
        if( LAPACKE_zge_nancheck( matrix_layout, m, n, c, ldc ) ) {
            return -12;
        }
        if( LAPACKE_zge_nancheck( matrix_layout, nb, k, t, ldt ) ) {
            return -10;
        }
        if( LAPACKE_zge_nancheck( matrix_layout, nrows_v, k, v, ldv ) ) {
            return -8;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,m) * MAX(1,nb) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_zgemqrt_work( matrix_layout, side, trans, m, n, k, nb, v, ldv,
                                 t, ldt, c, ldc, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_zgemqrt", info );
    }
    return info;
}