benchmark/random_bench.cc
author alpar
Tue, 31 Oct 2006 08:28:55 +0000
changeset 2277 a7896017fc7d
child 2391 14a343be7a5a
permissions -rw-r--r--
icpc-9.0 compilation bugfix
     1 #include<stdlib.h>
     2 #include<lemon/random.h>
     3 #include<lemon/time_measure.h>
     4 
     5 using namespace lemon;
     6 
     7 void f_no() 
     8 {
     9 }
    10 
    11 inline void f_noi() 
    12 {
    13 }
    14 
    15 inline void f_i() 
    16 {
    17   static int r;  
    18   r=5;
    19 }
    20 
    21 inline void f_l() 
    22 {
    23   static long int r;
    24   r=5;
    25 }
    26 
    27 inline void f_d() 
    28 {
    29   static double r;
    30   r=5;
    31 }
    32 
    33 inline void f_rand() 
    34 {
    35   static int r;  
    36   r=rand();
    37 }
    38 
    39 inline void f_random() 
    40 {
    41   static long int r;
    42   r=random();
    43 }
    44 
    45 inline void f_drand48() 
    46 {
    47   static double r;
    48   r=drand48();
    49 }
    50 
    51 inline void f_rnd_d() 
    52 {
    53   static double r;
    54   r=rnd();
    55 }
    56 inline void f_rnd_int1000() 
    57 {
    58   static int r;
    59   r=rnd[1000];
    60 }
    61 inline void f_rnd_bool() 
    62 {
    63   static bool r;
    64   r=rnd.boolean();
    65 }
    66 
    67 // inline void f_() 
    68 // {
    69 //   static double r;
    70 //   r=;
    71 // }
    72 
    73 int main()
    74 {
    75   TimeStamp full;
    76   TimeStamp t;
    77   unsigned int n;
    78   
    79   const double TEST_DURATION=10;
    80 
    81   t=runningTimeTest(f_no,2,&n,&full);
    82 
    83   t=runningTimeTest(f_no,TEST_DURATION,&n,&full); 
    84   std::cout << "EMPTY:         ";
    85   std::cout << t.userTime() << " (" << n << " tests)\n";
    86   
    87   t=runningTimeTest(f_noi,TEST_DURATION,&n,&full);
    88   std::cout << "INLINED EMPTY: ";
    89   std::cout << t.userTime() << " (" << n << " tests)\n";
    90   
    91   TimeStamp ti=t=runningTimeTest(f_i,TEST_DURATION,&n,&full);
    92   std::cout << "INT COPY:      ";
    93   std::cout << t.userTime() << " (" << n << " tests)\n";
    94   
    95   TimeStamp tl=t=runningTimeTest(f_l,TEST_DURATION,&n,&full);
    96   std::cout << "LONG COPY:     ";
    97   std::cout << t.userTime() << " (" << n << " tests)\n";
    98   
    99   TimeStamp td=t=runningTimeTest(f_d,TEST_DURATION,&n,&full);
   100   std::cout << "DOUBLE COPY:   ";
   101   std::cout << t.userTime() << " (" << n << " tests)\n";
   102   
   103   t=runningTimeTest(f_rand,TEST_DURATION,&n,&full);
   104   std::cout << "rand():        ";
   105   std::cout << (t-ti).userTime() << " (" << n << " tests)\n";
   106   
   107   t=runningTimeTest(f_random,TEST_DURATION,&n,&full);
   108   std::cout << "random():      ";
   109   std::cout << (t-tl).userTime() << " (" << n << " tests)\n";
   110   
   111   t=runningTimeTest(f_drand48,TEST_DURATION,&n,&full);
   112   std::cout << "drand48():     ";
   113   std::cout << (t-td).userTime() << " (" << n << " tests)\n";
   114   
   115   t=runningTimeTest(f_rnd_d,TEST_DURATION,&n,&full);
   116   std::cout << "rnd():         ";
   117   std::cout << (t-td).userTime() << " (" << n << " tests)\n";
   118   
   119   t=runningTimeTest(f_rnd_int1000,TEST_DURATION,&n,&full);
   120   std::cout << "rnd[1000]:     ";
   121   std::cout << (t-ti).userTime() << " (" << n << " tests)\n";
   122   
   123   t=runningTimeTest(f_rnd_bool,TEST_DURATION,&n,&full);
   124   std::cout << "rnd.boolean(): ";
   125   std::cout << (t-ti).userTime() << " (" << n << " tests)\n";
   126   
   127 //   t=runningTimeTest(f_,TEST_DURATION,&n,&full);
   128 //   std::cout << "\n";
   129 //   std::cout << t << " (" << n << " tests)\n";
   130 //   std::cout << "Total: " << full << "\n\n";
   131   
   132   return 0;
   133 }