LAPACKE_dorbdb()

lapack_int LAPACKE_dorbdb	(	int	matrix_layout,
		char	trans,
		char	signs,
		lapack_int	m,
		lapack_int	p,
		lapack_int	q,
		double *	x11,
		lapack_int	ldx11,
		double *	x12,
		lapack_int	ldx12,
		double *	x21,
		lapack_int	ldx21,
		double *	x22,
		lapack_int	ldx22,
		double *	theta,
		double *	phi,
		double *	taup1,
		double *	taup2,
		double *	tauq1,
		double *	tauq2
	)

Definition at line 35 of file lapacke_dorbdb.c.

{
    lapack_int info = 0;
    lapack_int lwork = -1;
    double* work = NULL;
    double work_query;
    int lapack_layout;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dorbdb", -1 );
        return -1;
    }
    if( LAPACKE_lsame( trans, 'n' ) && matrix_layout == LAPACK_COL_MAJOR ) {
        lapack_layout = LAPACK_COL_MAJOR;
    } else {
        lapack_layout = LAPACK_ROW_MAJOR;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dge_nancheck( lapack_layout, p, q, x11, ldx11 ) ) {
            return -7;
        }
        if( LAPACKE_dge_nancheck( lapack_layout, p, m-q, x12, ldx12 ) ) {
            return -9;
        }
        if( LAPACKE_dge_nancheck( lapack_layout, m-p, q, x21, ldx21 ) ) {
            return -11;
        }
        if( LAPACKE_dge_nancheck( lapack_layout, m-p, m-q, x22, ldx22 ) ) {
            return -13;
        }
    }
#endif
    /* Query optimal working array(s) size */
    info = LAPACKE_dorbdb_work( matrix_layout, trans, signs, m, p, q, x11, ldx11,
                                x12, ldx12, x21, ldx21, x22, ldx22, theta, phi,
                                taup1, taup2, tauq1, tauq2, &work_query,
                                lwork );
    if( info != 0 ) {
        goto exit_level_0;
    }
    lwork = (lapack_int)work_query;
    /* Allocate memory for work arrays */
    work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_dorbdb_work( matrix_layout, trans, signs, m, p, q, x11, ldx11,
                                x12, ldx12, x21, ldx21, x22, ldx22, theta, phi,
                                taup1, taup2, tauq1, tauq2, work, lwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dorbdb", info );
    }
    return info;

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