lapacke_zupgtr.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_zupgtr (int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *ap, const lapack_complex_double *tau, lapack_complex_double *q, lapack_int ldq)

Function Documentation

LAPACKE_zupgtr()

lapack_int LAPACKE_zupgtr	(	int	matrix_layout,
		char	uplo,
		lapack_int	n,
		const lapack_complex_double *	ap,
		const lapack_complex_double *	tau,
		lapack_complex_double *	q,
		lapack_int	ldq )

Definition at line 35 of file lapacke_zupgtr.c.

{
    lapack_int info = 0;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zupgtr", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_zpp_nancheck( n, ap ) ) {
            return -4;
        }
        if( LAPACKE_z_nancheck( n-1, tau, 1 ) ) {
            return -5;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n-1) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_zupgtr_work( matrix_layout, uplo, n, ap, tau, q, ldq, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_zupgtr", info );
    }
    return info;
}