This is a twisted GFSR generator proposed by Matsumoto and
             Kurita in the ACM Transactions on Modelling and Computer
             Simulation, Vol. 4, No. 3, 1994, pp. 254-266. This generator has a
             period of 2^800 - 1 and excellent equidistribution properties up to
             dimension 25. A TGFSR with a period of more than 2^11000 is
             currently under construction by M. Matsumoto and T. Nishimura.
            
             The original code has been adapted to the general random generator class
             interface of Matpack, 1997.
            
             Original notes of the authors:
               A C-program for TT800 : July 8th 1996 Version
               by M. Matsumoto, email: matumoto@math.keio.ac.jp
               genrand() generate one pseudorandom number with double precision
               which is uniformly distributed on [0,1]-interval
               for each call.  One may choose any initial 25 seeds
               except all zeros.
            
             References:
               (1) ACM Transactions on Modelling and Computer Simulation,
                   Vol. 4, No. 3, 1994, pages 254-266.
               (2) This is one of the recommended generators in:
                   Pierre L'Ecuyer, "Random Number Generation", Chapter 4
                   of the "Handbook on Simulation", Ed. Jerry Banks, Wiley, 1997.