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//Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.

//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)

#ifndef UUID_185557CE385511E780ACD7B781262D2E
#define UUID_185557CE385511E780ACD7B781262D2E

#include <boost/qvm/gen/vec_assign2.hpp>
#include <boost/qvm/gen/vec_assign3.hpp>
#include <boost/qvm/gen/vec_assign4.hpp>

namespace
boost
    {
    namespace
    qvm
        {
        namespace
        qvm_detail
            {
            template <int D>
            struct
            assign_vv_defined
                {
                static bool const value=false;
                };

            template <int I,int N>
            struct
            copy_vector_elements
                {
                template <class A,class B>
                static
                void
                f( A & a, B const & b )
                    {
                    vec_traits<A>::template write_element<I>(a)=vec_traits<B>::template read_element<I>(b);
                    copy_vector_elements<I+1,N>::f(a,b);
                    }
                };

            template <int N>
            struct
            copy_vector_elements<N,N>
                {
                template <class A,class B>
                static
                void
                f( A &, B const & )
                    {
                    }
                };
            }

        template <class A,class B>
        inline
        typename boost::enable_if_c<
            is_vec<A>::value && is_vec<B>::value &&
            vec_traits<A>::dim==vec_traits<B>::dim &&
            !qvm_detail::assign_vv_defined<vec_traits<A>::dim>::value,
            A &>::type
        assign( A & a, B const & b )
            {
            qvm_detail::copy_vector_elements<0,vec_traits<A>::dim>::f(a,b);
            return a;
            }
        }
    }

#endif