lapacke_dgbbrd_work.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_dgbbrd_work (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, double *work)

Function Documentation

LAPACKE_dgbbrd_work()

lapack_int LAPACKE_dgbbrd_work	(	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,
		double *	work )

Definition at line 35 of file lapacke_dgbbrd_work.c.

{
    lapack_int info = 0;
    if( matrix_layout == LAPACK_COL_MAJOR ) {
        /* Call LAPACK function and adjust info */
        LAPACK_dgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab, &ldab, d, e, q, &ldq,
                       pt, &ldpt, c, &ldc, work, &info );
        if( info < 0 ) {
            info = info - 1;
        }
    } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
        lapack_int ldab_t = MAX(1,kl+ku+1);
        lapack_int ldc_t = MAX(1,m);
        lapack_int ldpt_t = MAX(1,n);
        lapack_int ldq_t = MAX(1,m);
        double* ab_t = NULL;
        double* q_t = NULL;
        double* pt_t = NULL;
        double* c_t = NULL;
        /* Check leading dimension(s) */
        if( ldab < n ) {
            info = -9;
            LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
            return info;
        }
        if( ldc < ncc ) {
            info = -17;
            LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
            return info;
        }
        if( ldpt < n ) {
            info = -15;
            LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
            return info;
        }
        if( ldq < m ) {
            info = -13;
            LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
            return info;
        }
        /* Allocate memory for temporary array(s) */
        ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
        if( ab_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_0;
        }
        if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
            q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,m) );
            if( q_t == NULL ) {
                info = LAPACK_TRANSPOSE_MEMORY_ERROR;
                goto exit_level_1;
            }
        }
        if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
            pt_t = (double*)
                LAPACKE_malloc( sizeof(double) * ldpt_t * MAX(1,n) );
            if( pt_t == NULL ) {
                info = LAPACK_TRANSPOSE_MEMORY_ERROR;
                goto exit_level_2;
            }
        }
        if( ncc != 0 ) {
            c_t = (double*)
                LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,ncc) );
            if( c_t == NULL ) {
                info = LAPACK_TRANSPOSE_MEMORY_ERROR;
                goto exit_level_3;
            }
        }
        /* Transpose input matrices */
        LAPACKE_dgb_trans( matrix_layout, m, n, kl, ku, ab, ldab, ab_t, ldab_t );
        if( ncc != 0 ) {
            LAPACKE_dge_trans( matrix_layout, m, ncc, c, ldc, c_t, ldc_t );
        }
        /* Call LAPACK function and adjust info */
        LAPACK_dgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab_t, &ldab_t, d, e, q_t,
                       &ldq_t, pt_t, &ldpt_t, c_t, &ldc_t, work, &info );
        if( info < 0 ) {
            info = info - 1;
        }
        /* Transpose output matrices */
        LAPACKE_dgb_trans( LAPACK_COL_MAJOR, m, n, kl, ku, ab_t, ldab_t, ab,
                           ldab );
        if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
            LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, m, q_t, ldq_t, q, ldq );
        }
        if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
            LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, pt_t, ldpt_t, pt, ldpt );
        }
        if( ncc != 0 ) {
            LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, ncc, c_t, ldc_t, c, ldc );
        }
        /* Release memory and exit */
        if( ncc != 0 ) {
            LAPACKE_free( c_t );
        }
exit_level_3:
        if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
            LAPACKE_free( pt_t );
        }
exit_level_2:
        if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
            LAPACKE_free( q_t );
        }
exit_level_1:
        LAPACKE_free( ab_t );
exit_level_0:
        if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
            LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
        }
    } else {
        info = -1;
        LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
    }
    return info;
}