#include "random.hpp"
#include <functional>
#include <iostream>

// constructors:
myrandom::RNG::RNG(): myseed{std::random_device()()} {
  std::cout<<"RNG: seed from std::random_device\n";
  std::cout<<"RNG: seed = "<<myseed<<"\n";
  gen.seed(myseed);
}

myrandom::RNG::RNG(uint_fast64_t seed_) : myseed{seed_}{
  std::cout<<"RNG: custom seed "<<seed_<<"\n";
  gen.seed(seed_);
}


// member functions:


uint_fast64_t myrandom::RNG::get_seed(){
  return myseed;
}

double myrandom::RNG::unif(){    
  static std::uniform_real_distribution<double> unif_dist(0,1);
  return unif_dist(gen);
}
double myrandom::RNG::gauss(){
  static std::normal_distribution<double> norm_dist(0,1);
  return norm_dist(gen);
}

double myrandom::RNG::gauss(double a, double s){
  static std::normal_distribution<double> norm_dist(a,s);
  return norm_dist(gen);
}

double myrandom::RNG::normal() {return gauss();}
double myrandom::RNG::normal(double a, double s) {return gauss(a, s);}

double myrandom::RNG::exp(){
  static std::exponential_distribution<double> expo_dist;
  return expo_dist(gen);
}