cpp-shared-random-generator/include/shared_random_generator/random.h

#pragma once

#include <memory>

namespace engine {
  namespace detail {
    struct random_impl;
  }

  class random_number_generator {
  public:
    random_number_generator();
    template <typename Provider>
    random_number_generator(Provider const & p)
        : p_impl(std::make_shared<Provider>(p)) {}
    template <typename Provider>
    random_number_generator(std::shared_ptr<Provider> const & p) : p_impl(p) {}
    unsigned int exclusive(unsigned int max) const;
    double exclusive(double min, double max) const;
    double inclusive(double min, double max) const;

  private:
    std::shared_ptr<detail::random_impl> p_impl;
  };
}