constraint_eqn_066 Subroutine

   subroutine constraint_eqn_066(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Limit on rate of change of energy in poloidal field
      !! author: P B Lloyd, CCFE, Culham Science Centre
      !! args : output structure : residual error; constraint value;
      !! residual error in physical units; output string; units string
      !! Limit on rate of change of energy in poloidal field
      !! #=# pfcoil
      !! #=#=# fpoloidalpower, maxpoloidalpower
      !! and hence also optional here.
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! fpoloidalpower : input real : f-value for constraint on rate of change of energy in poloidal field
      !! maxpoloidalpower : input real : Maximum permitted absolute rate of change of stored energy in poloidal field (MW)
      !! peakpoloidalpower : input real : Peak absolute rate of change of stored energy in poloidal field (MW) (11/01/16)
      use constraint_variables, only: fpoloidalpower
      use pf_power_variables, only: maxpoloidalpower, peakpoloidalpower
      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 - fpoloidalpower * maxpoloidalpower / peakpoloidalpower
      tmp_con = maxpoloidalpower
      tmp_err = maxpoloidalpower * tmp_cc
      tmp_symbol = '<'
      tmp_units = 'MW'

   end subroutine constraint_eqn_066