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// $Id: RandomEngine.icc,v 1.4 2010/10/25 18:18:47 garren Exp $
// -*- C++ -*-
// 
// -----------------------------------------------------------------------
//                             HEP Random
//                       --- HepRandomEngine ---
//                 inlined functions implementation file
// -----------------------------------------------------------------------
// This file is part of Geant4 (simulation toolkit for HEP).

// =======================================================================
// Gabriele Cosmo - Created: 5th September 1995
//                - Added == and != operators: 19th November 1996
//                - Moved seeds table to HepRandom: 19th March 1998
// =======================================================================

#include <cmath>

namespace CLHEP {

inline bool HepRandomEngine::operator==(const HepRandomEngine& engine) {
  return (this==&engine);
}

inline bool HepRandomEngine::operator!=(const HepRandomEngine& engine) {
  return (this!=&engine);
}

inline double HepRandomEngine::exponent_bit_32()  {
  static double exponent_bit_32 = std::pow(2.0, 32.0);
  return exponent_bit_32;
}

inline double HepRandomEngine::mantissa_bit_12()  {
  static double mantissa_bit_12 = std::pow(0.5, 12.0);
  return mantissa_bit_12;
}

inline double HepRandomEngine::mantissa_bit_24()  {
  static double mantissa_bit_24 = std::pow(0.5, 24.0);
  return mantissa_bit_24;
}

inline double HepRandomEngine::twoToMinus_32()  {
  static double twoToMinus_32 = std::ldexp(1.0, -32);
  return twoToMinus_32;
}

inline double HepRandomEngine::twoToMinus_48()  {
  static double twoToMinus_48 = std::ldexp(1.0, -48);
  return twoToMinus_48;
}

inline double HepRandomEngine::twoToMinus_49()  {
  static double twoToMinus_49 = std::ldexp(1.0, -49);
  return twoToMinus_49;
}

inline double HepRandomEngine::twoToMinus_53()  {
  static double twoToMinus_53 = std::ldexp(1.0, -53);
  return twoToMinus_53;
}

inline double HepRandomEngine::nearlyTwoToMinus_54()  {
  static double nearlyTwoToMinus_54 = std::ldexp(1.0,  -54)
                                          - std::ldexp(1.0, -100);
  return nearlyTwoToMinus_54;
}

}  // namespace CLHEP