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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_47136D2C385411E7BA27D3B681262D2E
#define UUID_47136D2C385411E7BA27D3B681262D2E

#include <boost/qvm/gen/mat_assign2.hpp>
#include <boost/qvm/gen/mat_assign3.hpp>
#include <boost/qvm/gen/mat_assign4.hpp>

namespace
boost
    {
    namespace
    qvm
        {
        namespace
        qvm_detail
            {
            template <int M,int N>
            struct
            assign_mm_defined
                {
                static bool const value=false;
                };

            template <int I,int N>
            struct
            copy_matrix_elements
                {
                template <class A,class B>
                static
                BOOST_QVM_INLINE_CRITICAL
                void
                f( A & a, B const & b )
                    {
                    mat_traits<A>::template write_element<I/mat_traits<A>::cols,I%mat_traits<A>::cols>(a) =
                        mat_traits<B>::template read_element<I/mat_traits<B>::cols,I%mat_traits<B>::cols>(b);
                    copy_matrix_elements<I+1,N>::f(a,b);
                    }
                };

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

        template <class A,class B>
        BOOST_QVM_INLINE_TRIVIAL
        typename boost::enable_if_c<
            is_mat<A>::value && is_mat<B>::value &&
            mat_traits<A>::rows==mat_traits<B>::rows &&
            mat_traits<A>::cols==mat_traits<B>::cols &&
            !qvm_detail::assign_mm_defined<mat_traits<A>::rows,mat_traits<A>::cols>::value,
            A &>::type
        assign( A & a, B const & b )
            {
            qvm_detail::copy_matrix_elements<0,mat_traits<A>::rows*mat_traits<A>::cols>::f(a,b);
            return a;
            }
        }
    }

#endif