constraint_eqn_019 Subroutine

   subroutine constraint_eqn_019(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Equation for MVA (power) upper limit: resistive TF coil set
      !! 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 MVA upper limit
      !! #=# tfcoil
      !! #=#=# fmva, mvalim
      !! and hence also optional here.
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! tfcpmw : input real : peak resistive TF coil inboard leg power (total) (MW)
      !! tflegmw : input real : TF coil outboard leg resistive power (total) (MW)
      !! fmva : input real : f-value for maximum MVA
      !! mvalim : input real : MVA limit for resistive TF coil set (total) (MW)
      use tfcoil_variables, only: tfcpmw, tflegmw
      use constraint_variables, only: fmva, mvalim
      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
      ! totmva : local real : total MVA in TF coil (MW)
      real(dp) :: totmva

      totmva = tfcpmw + tflegmw
      tmp_cc =  1.0D0 - fmva * mvalim/totmva
      tmp_con = mvalim * (1.0D0 - tmp_cc)
      tmp_err = totmva * tmp_cc
      tmp_symbol = '<'
      tmp_units = 'MVA'

   end subroutine constraint_eqn_019