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! D.J. Jeffery, 2020jan06
! An include file to declare functions types.  Must be in the declartion
!  list.  I suggest right after parameters.
!      include 'function_type_declaration.f' ! A file that declares the function types.
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      real (kind=np) :: func_phi
      real (kind=np) :: func_phi_r
      real (kind=np) :: func_phi_r_inverse
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      real (kind=np) :: func_xne_h_analytic_equation
      real (kind=np) :: func_xne_h_analytic_exact
      real (kind=np) :: func_xne_h_analytic_exact2
      real (kind=np) :: func_xne_h_analytic_series_small
      real (kind=np) :: func_xne_h_analytic_series_large
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