anchor.diff: -!
   !   nls.f95
  -!
  -!   (c) Daniel Bershatsky, 2015
  -!
  -
  +!   Computational core of the project. Define routines that solve Non-Linear Schrodinger equation.
  +!   (c) Daniel Bershatsky, 2015-2016
  +!   See LISENCE for details.
   module nls
       implicit none
   
  
positive.code:         op = h
      end subroutine make_laplacian_o7
  
      subroutine make_laplacian(n, m, h, op)
          implicit none
  
  
negative.code:         end do
      end subroutine runge_kutta
  
      !   \brief Solve Non-Linear Schrodinger equation in axial symmentric geometry. It is based on Runge-Kutta method of
      !   order 4 with laplacian approximation order that passed as argument. Initial solution is uniform everywhere on
      !   the grid.
      !
      !   \param[in] dt
      !   \verbatim
  