constraint_eqn_041 Subroutine

   subroutine constraint_eqn_041(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Equation for plasma current ramp-up time lower 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 plasma current ramp-up time lower limit
      !! #=# times
      !! #=#=# ft_current_ramp_up, t_current_ramp_up_min
      !! and hence also optional here.
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! ft_current_ramp_up : input real : f-value for plasma current ramp-up time
      !! t_current_ramp_up : input real : plasma current ramp-up time for current initiation (s)
      !! t_current_ramp_up_min : input real : minimum plasma current ramp-up time (s)
      use constraint_variables, only: ft_current_ramp_up, t_current_ramp_up_min
      use times_variables, only: t_current_ramp_up
      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 - ft_current_ramp_up * t_current_ramp_up/t_current_ramp_up_min
      tmp_con = t_current_ramp_up_min * (1.0D0 - tmp_cc)
      tmp_err = t_current_ramp_up_min * tmp_cc
      tmp_symbol = '>'
      tmp_units = 'sec'

   end subroutine constraint_eqn_041