#include <time.h>
#include <stdlib.h>
#include "ew_random.h"

int random_generator::our_initialized = 0;

random_generator::random_generator()
{
   if (!our_initialized)
   {
      our_initialized = 1;
      srand(time(0));
   }
}

int random_generator::random_int (int max)
{
   return static_cast<int>(random_real() * max);
}

int random_generator::random_int (int low, int max)
{
   return low + random_int(max-low+1);
}

double random_generator::random_real()
{
   return rand() / (static_cast<double>(RAND_MAX) + 1);
}

double random_generator::random_real(double low, double max)
{
   return low + random_real() * (max - low + 1);
}