-OrderPair* allocOrderPair(uint64_t first, uint64_t second, Constraint * constraint){
- OrderPair* pair = (OrderPair*) ourmalloc(sizeof(OrderPair));
+OrderPair *allocOrderPair(uint64_t first, uint64_t second, Edge constraint) {
+ OrderPair *pair = (OrderPair *) ourmalloc(sizeof(OrderPair));