/*
 * call-seq:
 *      rd.size              -> Integer
 *
 * Returns the number of counters a Raindrops object can hold.  Due to
 * page alignment, this is always equal or greater than the number of
 * requested slots passed to Raindrops.new
 */
static VALUE size(VALUE self)
{
        return SIZET2NUM(get(self)->size);
}