lemon-0.x: benchmark/random_bench.cc@8450951a8e2d

     1 #include<stdlib.h>

     2 #include<lemon/random.h>

     3 #include<lemon/time_measure.h>

     5 using namespace lemon;

     7 void f_no()

8 {

9 }

    11 inline void f_noi()

    12 {

    13 }

    15 inline void f_i()

    16 {

    17   static int r;

    18   r=5;

    19 }

    21 inline void f_l()

    22 {

    23   static long int r;

    24   r=5;

    25 }

    27 inline void f_d()

    28 {

    29   static double r;

    30   r=5;

    31 }

    33 inline void f_rand()

    34 {

    35   static int r;

    36   r=rand();

    37 }

    39 inline void f_random()

    40 {

    41   static long int r;

    42   r=random();

    43 }

    45 inline void f_drand48()

    46 {

    47   static double r;

    48   r=drand48();

    49 }

    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 }

    67 // inline void f_()

    68 // {

    69 //   static double r;

    70 //   r=;

    71 // }

    73 int main()

    74 {

    75   TimeStamp full;

    76   TimeStamp t;

    77   unsigned int n;

    79   const double TEST_DURATION=10;

    81   t=runningTimeTest(f_no,2,&n,&full);

    83   t=runningTimeTest(f_no,TEST_DURATION,&n,&full);

    84   std::cout << "EMPTY:         ";

    85   std::cout << t.userTime() << " (" << n << " tests)\n";

    87   t=runningTimeTest(f_noi,TEST_DURATION,&n,&full);

    88   std::cout << "INLINED EMPTY: ";

    89   std::cout << t.userTime() << " (" << n << " tests)\n";

    91   TimeStamp ti=t=runningTimeTest(f_i,TEST_DURATION,&n,&full);

    92   std::cout << "INT COPY:      ";

    93   std::cout << t.userTime() << " (" << n << " tests)\n";

    95   TimeStamp tl=t=runningTimeTest(f_l,TEST_DURATION,&n,&full);

    96   std::cout << "LONG COPY:     ";

    97   std::cout << t.userTime() << " (" << n << " tests)\n";

    99   TimeStamp td=t=runningTimeTest(f_d,TEST_DURATION,&n,&full);

   100   std::cout << "DOUBLE COPY:   ";

   101   std::cout << t.userTime() << " (" << n << " tests)\n";

   103   t=runningTimeTest(f_rand,TEST_DURATION,&n,&full);

   104   std::cout << "rand():        ";

   105   std::cout << (t-ti).userTime() << " (" << n << " tests)\n";

   107   t=runningTimeTest(f_random,TEST_DURATION,&n,&full);

   108   std::cout << "random():      ";

   109   std::cout << (t-tl).userTime() << " (" << n << " tests)\n";

   111   t=runningTimeTest(f_drand48,TEST_DURATION,&n,&full);

   112   std::cout << "drand48():     ";

   113   std::cout << (t-td).userTime() << " (" << n << " tests)\n";

   115   t=runningTimeTest(f_rnd_d,TEST_DURATION,&n,&full);

   116   std::cout << "rnd():         ";

   117   std::cout << (t-td).userTime() << " (" << n << " tests)\n";

   119   t=runningTimeTest(f_rnd_int1000,TEST_DURATION,&n,&full);

   120   std::cout << "rnd[1000]:     ";

   121   std::cout << (t-ti).userTime() << " (" << n << " tests)\n";

   123   t=runningTimeTest(f_rnd_bool,TEST_DURATION,&n,&full);

   124   std::cout << "rnd.boolean(): ";

   125   std::cout << (t-ti).userTime() << " (" << n << " tests)\n";

   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";

   132   return 0;

   133 }

author	alpar
	Sat, 03 Mar 2007 16:04:50 +0000
changeset 2390	8450951a8e2d
child 2391	14a343be7a5a
permissions	-rw-r--r--