constraint_eqn_036 Subroutine

   subroutine constraint_eqn_036(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Equation for TF coil s/c temperature margin lower limit (SCTF)
      !! 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 TF coil s/c temperature margin lower limit (SCTF)
      !! #=# tfcoil
      !! #=#=# ftmargtf, tmargmin_tf
      !! and hence also optional here.
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! ftmargtf : input real : f-value for TF coil temperature margin
      !! tmargtf : input real : TF coil temperature margin (K)
      !! tmargmin_tf : input real : minimum allowable temperature margin : TF coils (K)
      use constraint_variables, only: ftmargtf
      use tfcoil_variables, only: tmargtf, tmargmin_tf
      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 - ftmargtf * tmargtf/tmargmin_tf
      tmp_con = tmargmin_tf
      tmp_err = tmargmin_tf - tmargtf
      tmp_symbol = '>'
      tmp_units = 'K'

   end subroutine constraint_eqn_036