};

   };

 #elif WORD_BIT == 64

 #elif WORD_BIT == 64

   /// \brief Mersenne Twister random number generator

   /// \brief Mersenne Twister random number generator

   ///

   ///

   /// The Mersenne Twister is a twisted generalized feedback

   /// The Mersenne Twister is a twisted generalized feedback

   /// shift-register generator of Matsumoto and Nishimura. The period of

   /// shift-register generator of Matsumoto and Nishimura. The period of

   /// this generator is \f$ 2^{19937} - 1 \f$ and it is equi-distributed in

   /// this generator is \f$ 2^{19937} - 1 \f$ and it is equi-distributed in

   };

   };

 #else

 #else

   /// \brief Mersenne Twister random number generator

   /// \brief Mersenne Twister random number generator

   ///

   ///

   /// The Mersenne Twister is a twisted generalized feedback

   /// The Mersenne Twister is a twisted generalized feedback

   /// shift-register generator of Matsumoto and Nishimura. There is

   /// shift-register generator of Matsumoto and Nishimura. There is

   /// two different implementation in the Lemon library, one for

   /// two different implementation in the Lemon library, one for