RNG.hh

Go to the documentation of this file.

 
#pragma once
 
#include <limits>
 
namespace HEJ {
 
  struct RNG {
    virtual double flat() = 0;
 
    virtual unsigned min() const = 0;
    virtual unsigned max() const = 0;
    virtual unsigned operator()() = 0;
 
    virtual ~RNG() = default;
  };
 
  struct DefaultRNG : virtual RNG {
    unsigned min() const override {
      return 0u;
    }
    unsigned max() const override {
      return std::numeric_limits<unsigned>::max() - 1;
    }
    unsigned operator()() override {
      return flat()*std::numeric_limits<unsigned int>::max();
    }
  };
}