1056   Idx i1, i2, is, id, delta, sbase;  in re_node_set_add_intersect()  local
1077   id = dest->nelem - 1;  in re_node_set_add_intersect()
1083 	  while (REG_VALID_INDEX (id) && dest->elems[id] > src1->elems[i1])  in re_node_set_add_intersect()
1084 	    --id;  in re_node_set_add_intersect()
1086           if (! REG_VALID_INDEX (id) || dest->elems[id] != src1->elems[i1])  in re_node_set_add_intersect()
1106   id = dest->nelem - 1;  in re_node_set_add_intersect()
1114   if (delta > 0 && REG_VALID_INDEX (id))  in re_node_set_add_intersect()
1117         if (dest->elems[is] > dest->elems[id])  in re_node_set_add_intersect()
1120             dest->elems[id + delta--] = dest->elems[is--];  in re_node_set_add_intersect()
1127             dest->elems[id + delta] = dest->elems[id];  in re_node_set_add_intersect()
1128             if (! REG_VALID_INDEX (--id))  in re_node_set_add_intersect()
1147   Idx i1, i2, id;  in re_node_set_init_union()  local
1165   for (i1 = i2 = id = 0 ; i1 < src1->nelem && i2 < src2->nelem ;)  in re_node_set_init_union()
1169 	  dest->elems[id++] = src2->elems[i2++];  in re_node_set_init_union()
1174       dest->elems[id++] = src1->elems[i1++];  in re_node_set_init_union()
1178       memcpy (dest->elems + id, src1->elems + i1,  in re_node_set_init_union()
1180       id += src1->nelem - i1;  in re_node_set_init_union()
1184       memcpy (dest->elems + id, src2->elems + i2,  in re_node_set_init_union()
1186       id += src2->nelem - i2;  in re_node_set_init_union()
1188   dest->nelem = id;  in re_node_set_init_union()
1199   Idx is, id, sbase, delta;  in re_node_set_merge()  local
1222        is = src->nelem - 1, id = dest->nelem - 1;  in re_node_set_merge()
1223        REG_VALID_INDEX (is) && REG_VALID_INDEX (id); )  in re_node_set_merge()
1225       if (dest->elems[id] == src->elems[is])  in re_node_set_merge()
1226         is--, id--;  in re_node_set_merge()
1227       else if (dest->elems[id] < src->elems[is])  in re_node_set_merge()
1230         --id;  in re_node_set_merge()
1240   id = dest->nelem - 1;  in re_node_set_merge()
1251       if (dest->elems[is] > dest->elems[id])  in re_node_set_merge()
1254           dest->elems[id + delta--] = dest->elems[is--];  in re_node_set_merge()
1261           dest->elems[id + delta] = dest->elems[id];  in re_node_set_merge()
1262 	  if (! REG_VALID_INDEX (--id))  in re_node_set_merge()