Delete random_extra.h

/* -*- c++ -*- ----------------------------------------------------------

   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 LMP_RANEXTRA_H

#define LMP_RANEXTRA_H

#include "pointers.h"

namespace LAMMPS_NS {

class RanExtra : protected Pointers {

 public:

  RanExtra(class LAMMPS *, int);

  double uniform();

  double gaussian(double mu, double sigma);

  double rayleigh(double sigma);

  double besselexp(double theta, double alpha, double cp);

  void reset(int);

  int state();

 private:

  int seed,save;

  double second;

};

}

#endif

/* ERROR/WARNING messages:

E: Invalid seed for Park random # generator (random extra)

The initial seed for this random number generator must be a positive

integer.

*/