lapacke_dgbbrd.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_dgbbrd (int matrix_layout, char vect, lapack_int m, lapack_int n, lapack_int ncc, lapack_int kl, lapack_int ku, double *ab, lapack_int ldab, double *d, double *e, double *q, lapack_int ldq, double *pt, lapack_int ldpt, double *c, lapack_int ldc)

Function Documentation

LAPACKE_dgbbrd()

lapack_int LAPACKE_dgbbrd	(	int	matrix_layout,
		char	vect,
		lapack_int	m,
		lapack_int	n,
		lapack_int	ncc,
		lapack_int	kl,
		lapack_int	ku,
		double *	ab,
		lapack_int	ldab,
		double *	d,
		double *	e,
		double *	q,
		lapack_int	ldq,
		double *	pt,
		lapack_int	ldpt,
		double *	c,
		lapack_int	ldc )

Definition at line 35 of file lapacke_dgbbrd.c.

{
    lapack_int info = 0;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dgbbrd", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dgb_nancheck( matrix_layout, m, n, kl, ku, ab, ldab ) ) {
            return -8;
        }
        if( ncc != 0 ) {
            if( LAPACKE_dge_nancheck( matrix_layout, m, ncc, c, ldc ) ) {
                return -16;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*MAX(m,n)) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_dgbbrd_work( matrix_layout, vect, m, n, ncc, kl, ku, ab, ldab,
                                d, e, q, ldq, pt, ldpt, c, ldc, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dgbbrd", info );
    }
    return info;
}