rtausmed

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
 
#ifndef tools_rtausmed
#define tools_rtausmed
 
// G.Barrand : not so clear if 0 and 1 are included.
//             With a simple program, we saw no hits with "if(r.shoot()==0)" or "if(r.shoot()==1)".
//             (See inlib/tests/rand.cpp).
 
#include "rtausmeui"
#include "S_STRING"
 
#include <cmath>
 
namespace tools {
 
class rtausmed : public rtausmeui {
  typedef rtausmeui parent;
public:
  TOOLS_SCLASS(tools::rtausmed)
public:
  rtausmed(unsigned int a_seed = 4357):parent(a_seed){}
  virtual ~rtausmed(){}
public:
  rtausmed(const rtausmed& a_from):parent(a_from){}
  rtausmed& operator=(const rtausmed& a_from) {parent::operator=(a_from);return *this;}
protected:
  static double two_to_minus_32()  {
    static const double s_v = std::ldexp(1.0,-32);
    return s_v;
  }
public:
  double shoot() {return double(parent::shoot()) * two_to_minus_32();}
};
 
}
 
#endif