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#include "../libcoyotl/mtwister.h"
#include "../libcoyotl/mwc1038.h"
#include "../libcoyotl/kissrng.h"
#include "../libcoyotl/mwc256.h"
#include "../libcoyotl/cmwc4096.h"
using namespace libcoyotl;
#include <iostream>
#include <iomanip>
#include <ctime>
using namespace std;
static const long TEST_SIZE = 1000000000;
double test_prng(prng & generator)
{
uint32_t i, count, total;
double n, l, s;
int counts[10];
/*
// each real function
cout << "\nrand_real1 - interval [0,1]" << endl;
s = 1.1;
l = -0.1;
for (i = 0; i < TEST_SIZE; ++i)
{
n = generator.get_rand_real1();
if (n < s) s = n;
if (n > l) l = n;
}
cout << " largest = " << l << "\n smallest = " << s << endl;
// each real function
cout << "\nrand_real2 - interval [0,1)" << endl;
s = 1.1;
l = -0.1;
for (i = 0; i < TEST_SIZE; ++i)
{
n = generator.get_rand_real2();
if (n < s) s = n;
if (n > l) l = n;
}
cout << " largest = " << l << "\n smallest = " << s << endl;
// each real function
cout << "\nrand_real3 - interval (0,1)" << endl;
s = 1.1;
l = -0.1;
for (i = 0; i < TEST_SIZE; ++i)
{
n = generator.get_rand_real3();
if (n < s) s = n;
if (n > l) l = n;
}
cout << " largest = " << l << "\n smallest = " << s << endl;
// each real function
cout << "\nrand_real53 - interval [0,1) - 53-bit precision" << endl;
s = 1.1;
l = -0.1;
for (i = 0; i < TEST_SIZE; ++i)
{
n = generator.get_rand_real53();
if (n < s) s = n;
if (n > l) l = n;
}
cout << " largest = " << l << "\n smallest = " << s << endl;
// check ranges
for (i = 0; i < 10; ++i)
counts[i] = 0;
for (i = 0; i < TEST_SIZE; ++i)
{
int x = generator.get_rand_index(10);
++counts[x];
}
cout << "\n";
total = 0;
for (i = 0; i < 10; ++i)
{
cout << "counts " << i << " = " << counts[i] << endl;
total += counts[i];
}
cout << "total = " << total << endl;
*/
// get starting time
struct timespec start, stop;
clock_gettime(CLOCK_REALTIME,&start);
// test generation speed
for (i = 0; i < TEST_SIZE; ++i)
uint32_t dummy = generator.get_rand();
// calculate run time
clock_gettime(CLOCK_REALTIME,&stop);
return ((stop.tv_sec - start.tv_sec) + (double)(stop.tv_nsec - start.tv_nsec) / 1000000000.0);
}
int main()
{
cout.precision(15);
cout.setf(ios::showpoint | ios::fixed);
mtwister mtwister_gen;
double mtwister_time = test_prng(mtwister_gen);
mwc1038 mwc1038_gen;
double mwc1038_time = test_prng(mwc1038_gen);
kissrng kissrng_gen;
double kissrng_time = test_prng(kissrng_gen);
mwc256 mwc256_gen;
double mwc256_time = test_prng(mwc256_gen);
cmwc4096 cmwc4096_gen;
double cmwc4096_time = test_prng(cmwc4096_gen);
cout.precision(2);
cout << "\nALGORITHM TIMING (random numbers / second)" << endl;
cout << "mtwister = " << right << setw(7) << mtwister_time
<< " (" << (unsigned long)(double(TEST_SIZE) / mtwister_time)
<< " rn/sec)" << endl;
cout << " mwc1038 = " << right << setw(7) << mwc1038_time
<< " (" << (unsigned long)(double(TEST_SIZE) / mwc1038_time)
<< " rn/sec)" << endl;
cout << " kissrng = " << right << setw(7) << kissrng_time
<< " (" << (unsigned long)(double(TEST_SIZE) / kissrng_time)
<< " rn/sec)" << endl;
cout << " mwc256 = " << right << setw(7) << mwc256_time
<< " (" << (unsigned long)(double(TEST_SIZE) / mwc256_time)
<< " rn/sec)" << endl;
cout << "cmwc4096 = " << right << setw(7) << cmwc4096_time
<< " (" << (unsigned long)(double(TEST_SIZE) / cmwc4096_time)
<< " rn/sec)" << endl;
return 0;
}
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