/*=============================================================================
    Copyright (c) 2001-2011 Joel de Guzman

    Distributed under the Boost Software License, Version 1.0. (See accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

    This is an auto-generated file. Do not edit!
==============================================================================*/
namespace boost { namespace fusion
{
    struct void_;
    namespace result_of
    {
        template <
            typename T0 = void_ , typename T1 = void_ , typename T2 = void_ , typename T3 = void_ , typename T4 = void_ , typename T5 = void_ , typename T6 = void_ , typename T7 = void_ , typename T8 = void_ , typename T9 = void_ , typename T10 = void_ , typename T11 = void_ , typename T12 = void_ , typename T13 = void_ , typename T14 = void_ , typename T15 = void_ , typename T16 = void_ , typename T17 = void_ , typename T18 = void_ , typename T19 = void_
          , typename Extra = void_
        >
        struct list_tie;
    }
    namespace result_of
    {
        template <typename T0>
        struct list_tie< T0 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0&> type;
        };
    }
    template <typename T0>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0&>
    list_tie(T0 & _0)
    {
        return list<T0&>(
            _0);
    }
    namespace result_of
    {
        template <typename T0 , typename T1>
        struct list_tie< T0 , T1 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1&> type;
        };
    }
    template <typename T0 , typename T1>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1&>
    list_tie(T0 & _0 , T1 & _1)
    {
        return list<T0& , T1&>(
            _0 , _1);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2>
        struct list_tie< T0 , T1 , T2 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2)
    {
        return list<T0& , T1& , T2&>(
            _0 , _1 , _2);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3>
        struct list_tie< T0 , T1 , T2 , T3 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3)
    {
        return list<T0& , T1& , T2& , T3&>(
            _0 , _1 , _2 , _3);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4)
    {
        return list<T0& , T1& , T2& , T3& , T4&>(
            _0 , _1 , _2 , _3 , _4);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5&>(
            _0 , _1 , _2 , _3 , _4 , _5);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , void_ , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , void_ , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , void_ , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13 , T14 & _14)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13 , _14);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , void_ , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13 , T14 & _14 , T15 & _15)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13 , _14 , _15);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , void_ , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13 , T14 & _14 , T15 & _15 , T16 & _16)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13 , _14 , _15 , _16);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16 , typename T17>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , void_ , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16 , typename T17>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13 , T14 & _14 , T15 & _15 , T16 & _16 , T17 & _17)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13 , _14 , _15 , _16 , _17);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16 , typename T17 , typename T18>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , void_ , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17& , T18&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16 , typename T17 , typename T18>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17& , T18&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13 , T14 & _14 , T15 & _15 , T16 & _16 , T17 & _17 , T18 & _18)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17& , T18&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13 , _14 , _15 , _16 , _17 , _18);
    }
    namespace result_of
    {
        template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16 , typename T17 , typename T18 , typename T19>
        struct list_tie< T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , void_ >
        {
            typedef list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17& , T18& , T19&> type;
        };
    }
    template <typename T0 , typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 , typename T9 , typename T10 , typename T11 , typename T12 , typename T13 , typename T14 , typename T15 , typename T16 , typename T17 , typename T18 , typename T19>
    BOOST_FUSION_GPU_ENABLED
    inline list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17& , T18& , T19&>
    list_tie(T0 & _0 , T1 & _1 , T2 & _2 , T3 & _3 , T4 & _4 , T5 & _5 , T6 & _6 , T7 & _7 , T8 & _8 , T9 & _9 , T10 & _10 , T11 & _11 , T12 & _12 , T13 & _13 , T14 & _14 , T15 & _15 , T16 & _16 , T17 & _17 , T18 & _18 , T19 & _19)
    {
        return list<T0& , T1& , T2& , T3& , T4& , T5& , T6& , T7& , T8& , T9& , T10& , T11& , T12& , T13& , T14& , T15& , T16& , T17& , T18& , T19&>(
            _0 , _1 , _2 , _3 , _4 , _5 , _6 , _7 , _8 , _9 , _10 , _11 , _12 , _13 , _14 , _15 , _16 , _17 , _18 , _19);
    }
}}
