constraint_eqn_063 Subroutine

   subroutine constraint_eqn_063(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Upper limit on niterpump (vacuum_model = simple)
      !! author: P B Lloyd, CCFE, Culham Science Centre
      !! args : output structure : residual error; constraint value;
      !! residual error in physical units; output string; units string
      !! Upper limit on niterpump (vacuum_model = simple)
      !! #=# vacuum
      !! #=#=# fniterpump, tfno
      !! and hence also optional here.
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! fniterpump : input real : f-value for constraint that number of pumps < tfno
      !! tfno : input real : number of TF coils (default = 50 for stellarators)
      !! niterpump : input real : number of high vacuum pumps (real number), each with the throughput
      use constraint_variables, only: fniterpump
      use tfcoil_variables, only: n_tf
      use vacuum_variables, only: niterpump
      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 - fniterpump * n_tf / niterpump
      tmp_con = n_tf
      tmp_err = n_tf * tmp_cc
      tmp_symbol = '<'
      tmp_units = ''

   end subroutine constraint_eqn_063