rawgraph.h

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#pragma once
 
#include <cdt.h>
#include <stdbool.h>
#include <stddef.h>
 
typedef struct {
  int color;
  int topsort_order;
  Dt_t* adj_list;  /* adj_list */
} vertex;
 
typedef struct {
  size_t nvs;
  vertex* vertices;
} rawgraph;
 
rawgraph *make_graph(size_t n);
 
extern void free_graph(rawgraph*); 
 
void insert_edge(rawgraph *, size_t v1, size_t v2);
 
void remove_redge(rawgraph *, size_t v1, size_t v2);
 
bool edge_exists(rawgraph *, size_t v1, size_t v2);
 
  /* topologically sorts the directed graph */
extern void top_sort(rawgraph*);