text: #include <ctime>
  #include <cstdio>
  #include <cmath>
  #include <random>
  #include "RasMatrix.h"
  #include <vector>
  
  
  namespace RasRandomNumber
  {
      unsigned ras_now_nanoseconds(void);
      std::vector<std::vector<double> > ras_mvnorm(unsigned long int n, std::vector<double> &mu, std::vector<std::vector<double> > &corr, unsigned seed);
      std::vector<int> ras_rpois(unsigned long int n, double lam, unsigned seed);
      int ras_rpois(double lam, unsigned seed);
      double ras_uniform(unsigned seed);
      std::vector<unsigned long int> ras_SampleWithoutReplacement(unsigned long int populationSize, unsigned long int sampleSize, unsigned seed);
  }
  
  
  