lo_unlink (PGconn)

    /*
     * call-seq:
     *    conn.lo_unlink( oid )
     *
     * Unlinks (deletes) the postgres large object of _oid_.
     */
    static VALUE
    pgconn_lounlink(obj, lo_oid)
        VALUE obj, lo_oid;
    {
        PGconn *conn;
        int oid = NUM2INT(lo_oid);
        int result;

        if (oid < 0){
            rb_raise(rb_ePGError, "invalid oid %d",oid);
        }
        conn = get_pgconn(obj);
        result = lo_unlink(conn,oid);

        return Qnil;
    }