/*
 *  call-seq:
 *     iw.term_index_interval -> number
 *
 *  Return the current value of term_index_interval
 */
static VALUE
frt_iw_get_index_interval(VALUE self)
{
    IndexWriter *iw = (IndexWriter *)DATA_PTR(self);
    return INT2FIX(iw->config.index_interval);
}