constraint_eqn_022 Subroutine

   subroutine constraint_eqn_022(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Equation for divertor collision/connection length ratio upper limit
      !! author: P B Lloyd, CCFE, Culham Science Centre
      !! args : output structure : residual error; constraint value;
      !! residual error in physical units; output string; units string
      !! Equation for divertor collision/connection length ratio upper limit
      !! #=# divertor
      !! #=#=# fdivcol, rlenmax
      !! and hence also optional here.
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! fdivcol : input real : f-value for divertor collisionality
      !! rlenmax : input real : maximum value for length ratio (rlclolcn)
      !! rlclolcn : input real : ratio of collision length / connection length
      use constraint_variables, only: fdivcol
      use divertor_variables, only: rlenmax, rlclolcn
      implicit none
            real(dp), intent(out) :: tmp_cc
      real(dp), intent(out) :: tmp_con
      real(dp), intent(out) :: tmp_err
      character(len=1), intent(out) :: tmp_symbol
      character(len=10), intent(out) :: tmp_units

      tmp_cc =  1.0D0 - fdivcol * rlenmax / rlclolcn
      tmp_con = rlenmax * (1.0D0 - tmp_cc)
      tmp_err = rlclolcn * tmp_cc
      tmp_symbol = '<'
      tmp_units = ''

   end subroutine constraint_eqn_022