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