LAPACKE_dtbrfs()

lapack_int LAPACKE_dtbrfs	(	int	matrix_layout,
		char	uplo,
		char	trans,
		char	diag,
		lapack_int	n,
		lapack_int	kd,
		lapack_int	nrhs,
		const double *	ab,
		lapack_int	ldab,
		const double *	b,
		lapack_int	ldb,
		const double *	x,
		lapack_int	ldx,
		double *	ferr,
		double *	berr
	)

Definition at line 35 of file lapacke_dtbrfs.c.

{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dtbrfs", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dtb_nancheck( matrix_layout, uplo, diag, n, kd, ab, ldab ) ) {
            return -8;
        }
        if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -10;
        }
        if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
            return -12;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
    if( iwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_dtbrfs_work( matrix_layout, uplo, trans, diag, n, kd, nrhs,
                                ab, ldab, b, ldb, x, ldx, ferr, berr, work,
                                iwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( iwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dtbrfs", info );
    }
    return info;

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