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2 #ifndef BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
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3 #define BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
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4
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5 // Copyright Aleksey Gurtovoy 2003-2004
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6 //
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7 // Distributed under the Boost Software License, Version 1.0.
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8 // (See accompanying file LICENSE_1_0.txt or copy at
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9 // http://www.boost.org/LICENSE_1_0.txt)
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10 //
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11 // See http://www.boost.org/libs/mpl for documentation.
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12
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13 // $Id$
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14 // $Date$
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15 // $Revision$
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16
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17 #include <boost/mpl/numeric_cast.hpp>
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18 #include <boost/mpl/apply_wrap.hpp>
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19 #include <boost/mpl/aux_/config/forwarding.hpp>
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20
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21 namespace boost { namespace mpl { namespace aux {
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22
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23 template<
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24 typename F
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25 , typename Tag1
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26 , typename Tag2
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27 >
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28 struct cast1st_impl
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29 {
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30 template< typename N1, typename N2 > struct apply
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31 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
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32 : apply_wrap2<
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33 F
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34 , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
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35 , N2
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36 >
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37 {
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38 #else
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39 {
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40 typedef typename apply_wrap2<
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41 F
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42 , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
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43 , N2
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44 >::type type;
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45 #endif
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46 };
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47 };
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48
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49 template<
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50 typename F
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51 , typename Tag1
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52 , typename Tag2
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53 >
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54 struct cast2nd_impl
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55 {
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56 template< typename N1, typename N2 > struct apply
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57 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
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58 : apply_wrap2<
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59 F
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60 , N1
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61 , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
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62 >
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63 {
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64 #else
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65 {
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66 typedef typename apply_wrap2<
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67 F
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68 , N1
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69 , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
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70 >::type type;
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71 #endif
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72 };
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73 };
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74
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75 }}}
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76
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77 #endif // BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
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