//+------------------------------------------------------------------+
//|                                              speed_benchmark.mq5 |
//|                                        Copyright © 2018, Amr Ali |
//|                             https://www.mql5.com/en/users/amrali |
//+------------------------------------------------------------------+
#include "Xoshiro256.mqh"
//--- the random number generator object
Xoshiro256 prng;

#define ITER (500*1000*1000)  // 500 millions
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void OnStart()
  {
//--- MathRand() benchmark.
   uint t1 = GetTickCount();
   for(int i = 0; i < ITER; i++)
     {
      MathRand();
     }
   uint ticks1 = GetTickCount() - t1;

//--- Xoshiro256 benchmark.
   uint t2 = GetTickCount();
   for(int i = 0; i < ITER; i++)
     {
      prng.RandomInteger();
     }
   uint ticks2 = GetTickCount() - t2;

//--- Display results.
   PrintFormat("Generating %d random integers: ", ITER);
   PrintFormat("MathRand() -> %u millisec", ticks1);
   PrintFormat("Xoshiro256 -> %u millisec", ticks2);
   PrintFormat("Speed-up factor is %.1fx", (double)ticks1/ticks2);
  }
//+------------------------------------------------------------------+

// sample output:
/*
 Generating 500000000 random integers:
 MathRand() -> 968 millisec
 Xoshiro256 -> 422 millisec
 Speed-up factor is 2.3x
*/