src/benchmark/bench_tools.h
author marci
Mon, 13 Sep 2004 16:15:12 +0000
changeset 838 51dcd224455c
parent 742 235fd36336b7
child 921 818510fa3d99
permissions -rw-r--r--
(none)
     1 // -*- mode:C++ -*-
     2 #ifndef HUGO_BENCH_TEST_H
     3 #define HUGO_BENCH_TEST_H
     4 
     5 #include<vector>
     6 #include<iostream>
     7 
     8 #include<hugo/time_measure.h>
     9 
    10 ///An experimental typedef factory
    11 #define GRAPH_TYPEDEF_FACTORY(Graph) \
    12    typedef typename Graph::   Node      Node;\
    13    typedef typename Graph::   NodeIt    NodeIt;\
    14    typedef typename Graph::   Edge      Edge;\
    15    typedef typename Graph::   EdgeIt    EdgeIt;\
    16    typedef typename Graph:: InEdgeIt  InEdgeIt;\
    17    typedef typename Graph::OutEdgeIt OutEdgeIt;
    18 
    19 #define GRAPH_TYPEDEF_FACTORY_NOTYPENAME(Graph) \
    20    typedef Graph::   Node      Node;\
    21    typedef Graph::   NodeIt    NodeIt;\
    22    typedef Graph::   Edge      Edge;\
    23    typedef Graph::   EdgeIt    EdgeIt;\
    24    typedef Graph:: InEdgeIt  InEdgeIt;\
    25    typedef Graph::OutEdgeIt OutEdgeIt;
    26  
    27 
    28 ///A primitive primtest
    29 
    30 ///\bug 2 is not a prime according to this function!
    31 bool isPrim(int n)
    32 {
    33   if(n%2) {
    34     for(int k=3;n/k>=k;k+=2)
    35       if(!(n%k)) return false;
    36     return true;
    37   }
    38   return false;
    39 }
    40 
    41 ///Finds the smallest prime not less then \c n.
    42 int nextPrim(int n)
    43 {
    44   for(n+=!(n%2);!isPrim(n);n+=2) ;
    45   return n;
    46 }
    47 
    48 
    49 /// Class to generate consecutive primes
    50 class Primes 
    51 {
    52   std::vector<int> primes;
    53   int n;
    54   
    55   bool isPrime(int m) 
    56   {
    57     for(int i=0;m<primes[i]*primes[i];i++) if(!(m%primes[i])) return false;
    58     return true;
    59   }
    60 public:
    61   Primes() : n(1) {}
    62   
    63   int operator() ()
    64     {
    65       if(primes.size()==0) {
    66 	primes.push_back(2);
    67 	return 2;
    68       }
    69       else {
    70 	do n+=2; while(!isPrime(n));
    71 	primes.push_back(n);
    72 	return n;
    73       }
    74     }
    75 };
    76 
    77 inline void PrintTime(char *ID,hugo::Timer &T) 
    78 {
    79   hugo::TimeStamp S(T);
    80   std::cout << ID << ' ' << S.getUserTime() << ' '
    81 	    << S.getSystemTime() << ' ' << S.getRealTime() << std::endl;
    82 }
    83 
    84 
    85 
    86 ///
    87 template<class Graph>
    88 void addHiperCube(Graph &G,int dim,std::vector<typename Graph::Node> &nodes)
    89 {
    90   GRAPH_TYPEDEF_FACTORY(Graph);
    91   
    92   std::vector<int> bits(dim+1);
    93   bits[0]=1;
    94   for(int i=1;i<=dim;i++) bits[i]=2*bits[i-1];
    95   
    96   for(int i=0;i<bits[dim];i++) {
    97     nodes.push_back(G.addNode());
    98     for(int j=0;j<dim;j++) if(i&bits[j]) G.addEdge(nodes[i-bits[j]],nodes[i]);
    99   }
   100 }
   101 
   102 ///
   103 template<class Graph>
   104 void addBiDirHiperCube(Graph &G,int dim,std::vector<typename Graph::Node>&nodes)
   105 {
   106   GRAPH_TYPEDEF_FACTORY(Graph);
   107   
   108   std::vector<int> bits(dim+1);
   109   bits[0]=1;
   110   for(int i=1;i<=dim;i++) bits[i]=2*bits[i-1];
   111   
   112   for(int i=0;i<bits[dim];i++) {
   113     nodes.push_back(G.addNode());
   114     for(int j=0;j<dim;j++) if(i&bits[j]) {
   115       G.addEdge(nodes[i-bits[j]],nodes[i]);
   116       G.addEdge(nodes[i],nodes[i-bits[j]]);
   117     }
   118     
   119   }
   120 }  
   121 
   122 #endif