lapacke_dgesvj.c

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* Contents: Native high-level C interface to LAPACK function dgesvj
* Author: Intel Corporation
* Generated October, 2010
*****************************************************************************/

#include "lapacke.h"
#include "lapacke_utils.h"

lapack_int LAPACKE_dgesvj( int matrix_order, char joba, char jobu, char jobv,
                           lapack_int m, lapack_int n, double* a,
                           lapack_int lda, double* sva, lapack_int mv,
                           double* v, lapack_int ldv, double* stat )
{
    lapack_int info = 0;
    lapack_int lwork = MAX(6,m+n);
    double* work = NULL;
    lapack_int i;
    if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dgesvj", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    lapack_int nrows_v = LAPACKE_lsame( jobv, 'v' ) ? n :
                         ( LAPACKE_lsame( jobv, 'a' ) ? mv : 1);
    if( LAPACKE_dge_nancheck( matrix_order, m, n, a, lda ) ) {
        return -7;
    }
    if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
        if( LAPACKE_dge_nancheck( matrix_order, nrows_v, n, v, ldv ) ) {
            return -11;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work[0] = stat[0];  /* Significant if jobu = 'c' */
    /* Call middle-level interface */
    info = LAPACKE_dgesvj_work( matrix_order, joba, jobu, jobv, m, n, a, lda,
                                sva, mv, v, ldv, work, lwork );
    /* Backup significant data from working array(s) */
    for( i=0; i<6; i++ ) {
        stat[i] = work[i];
    }
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dgesvj", info );
    }
    return info;
}