random_mars.h

/* ----------------------------------------------------------------------
   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
   http://lammps.sandia.gov, Sandia National Laboratories
   Steve Plimpton, sjplimp@sandia.gov

   Copyright (2003) Sandia Corporation.  Under the terms of Contract
   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
   certain rights in this software.  This software is distributed under
   the GNU General Public License.

   See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */

#ifndef IBLB_RANMARS_H
#define IBLB_RANMARS_H

//#include "pointers.h"

//namespace LAMMPS_NS {

//class RanMars : protected Pointers {
class RanMars {
 public:
  //RanMars(class LAMMPS *, int);
  RanMars(int);
  ~RanMars();
  double uniform();
  double gaussian();

 private:
  int seed,save;
  double second;
  double *u;
  int i97,j97;
  double c,cd,cm;
};

//}

#endif

/* ERROR/WARNING messages:

E: Invalid seed for Marsaglia random # generator

The initial seed for this random number generator must be a positive
integer less than or equal to 900 million.

*/