# source:lemon-0.x/benchmark/graph-bench.cc@2196:09af6d2b683b

Last change on this file since 2196:09af6d2b683b was 1956:a055123339d5, checked in by Alpar Juttner, 15 years ago

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RevLine
[1956]1/* -*- C++ -*-
2 *
3 * This file is a part of LEMON, a generic C++ optimization library
4 *
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
8 *
9 * Permission to use, modify and distribute this software is granted
10 * provided that this copyright notice appears in all copies. For
11 * precise terms see the accompanying LICENSE file.
12 *
13 * This software is provided "AS IS" with no warranty of any kind,
14 * express or implied, and with no claim as to its suitability for any
15 * purpose.
16 *
17 */
18
[921]19#include<lemon/list_graph.h>
[711]20
21#include"bench_tools.h"
[699]22
[921]23using namespace lemon;
[699]24
25///Makes a full graph by adding and deleting a lot of edges;
26
27///\param n Number of nodes.
28///\param rat The funcion will make \f\$rat\timesn^2\f\$ edge addition and
29///\f\$(rat-1)\timesn^2\f\$ deletion.
30///\param p Tuning parameters.
31///\warning \c rat, \c p, and \c n must be pairwise relative primes.
32template <class Graph>
33void makeFullGraph(int n, int rat, int p)
34{
[1756]35  GRAPH_TYPEDEFS(typename Graph);
[699]36
37  Graph G;
38
[708]39  //  Node nodes[n];
40  std::vector<Node> nodes(n);
42
[708]43  //Edge equ[rat];
44  std::vector<Edge> equ(rat);
[699]45
[718]46  long long int count;
[699]47
48  for(count=0;count<rat;count++) {
50                                  nodes[int((count*p/n)%n)]);
[699]51  }
52  for(;(count%rat)||((count*p)%n)||((count*p/n)%n);count++) {
53    //    if(!(count%1000000)) fprintf(stderr,"%d\r",count);
54    if(count%rat) G.erase(equ[count%rat]);
56                                  nodes[int((count*p/n)%n)]);
[699]57  }
[718]58//   std::cout << "Added " << count
59//          << " ( " << n << "^2 * " << rat << " ) edges\n";
60
61
[699]62  //  for(int i=0;1;i++) ;
63}
64
65int main()
66{
[921]67  lemon::Timer T;
[699]68  makeFullGraph<ListGraph>(nextPrim(1000),nextPrim(300),nextPrim(100));
[718]69
70  PrintTime("BIG",T);
[1847]71  T.restart();
[699]72  makeFullGraph<ListGraph>(nextPrim(100),nextPrim(30000),nextPrim(150));
[718]73
74  PrintTime("SMALL",T);
[699]75}
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