text: //////////////////////////////////////////////////////////////////////////////
  ///   Copyright 2003 and onward LASMEA UMR 6602 CNRS/U.B.P Clermont-Ferrand
  ///   Copyright 2009 and onward LRI    UMR 8623 CNRS/Univ Paris Sud XI
  ///
  ///          Distributed under the Boost Software License, Version 1.0
  ///                 See accompanying file LICENSE.txt or copy at
  ///                     http://www.boost.org/LICENSE_1_0.txt
  //////////////////////////////////////////////////////////////////////////////
  #ifndef NT2_TOOLBOX_CEPHES_FUNCTION_EXPN_HPP_INCLUDED
  #define NT2_TOOLBOX_CEPHES_FUNCTION_EXPN_HPP_INCLUDED
  #include <nt2/include/simd.hpp>
  #include <nt2/include/functor.hpp>
  #include <nt2/toolbox/cephes/include.hpp>
  
  namespace nt2 { namespace cephes { namespace tag
    {         
      struct expn_ {};
    }
    NT2_FUNCTION_IMPLEMENTATION(cephes::tag::expn_, expn, 2)
    } }
   
  #include <nt2/toolbox/cephes/function/scalar/expn.hpp>
  // #include NT2_CEPHES_INCLUDE(expn.hpp) 
  
   
  #endif
  
  // modified by jt the 29/12/2010