/*
 * call-seq:
 *    res.result_status() -> Fixnum
 *
 * Returns the status of the query. The status value is one of:
 * * +PGRES_EMPTY_QUERY+
 * * +PGRES_COMMAND_OK+
 * * +PGRES_TUPLES_OK+
 * * +PGRES_COPY_OUT+
 * * +PGRES_COPY_IN+
 * * +PGRES_BAD_RESPONSE+
 * * +PGRES_NONFATAL_ERROR+
 * * +PGRES_FATAL_ERROR+
 */
static VALUE
pgresult_result_status(VALUE self)
{
    return INT2FIX(PQresultStatus(get_pgresult(self)));
}