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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_6D6B1EE2119A11E291554FEE6188709B
#define UUID_6D6B1EE2119A11E291554FEE6188709B

#include <boost/qvm/inline.hpp>
#include <boost/qvm/deduce_quat.hpp>
#include <boost/qvm/detail/remove_const.hpp>
#include <boost/qvm/assert.hpp>

namespace
boost
    {
    namespace
    qvm
        {
        template <class T,int D>
        struct
        quat_traits<T[D]>
            {
            typedef void scalar_type;
            };
        template <class T,int D>
        struct
        quat_traits<T[D][4]>
            {
            typedef void scalar_type;
            };
        template <class T,int D>
        struct
        quat_traits<T[4][D]>
            {
            typedef void scalar_type;
            };
        template <class T>
        struct
        quat_traits<T[4][4]>
            {
            typedef void scalar_type;
            };
        template <class T,int M,int N>
        struct
        quat_traits<T[M][N]>
            {
            typedef void scalar_type;
            };

        template <class T>
        struct
        quat_traits<T[4]>
            {
            typedef T this_quaternion[4];
            typedef typename qvm_detail::remove_const<T>::type scalar_type;

            template <int I>
            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type
            read_element( this_quaternion const & x )
                {
                BOOST_QVM_STATIC_ASSERT(I>=0);
                BOOST_QVM_STATIC_ASSERT(I<4);
                return x[I];
                }

            template <int I>
            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type &
            write_element( this_quaternion & x )
                {
                BOOST_QVM_STATIC_ASSERT(I>=0);
                BOOST_QVM_STATIC_ASSERT(I<4);
                return x[I];
                }

            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type
            read_element_idx( int i, this_quaternion const & x )
                {
                BOOST_QVM_ASSERT(i>=0);
                BOOST_QVM_ASSERT(i<4);
                return x[i];
                }

            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type &
            write_element_idx( int i, this_quaternion & x )
                {
                BOOST_QVM_ASSERT(i>=0);
                BOOST_QVM_ASSERT(i<4);
                return x[i];
                }
            };

        template <class T>
        struct
        deduce_quat<T[4]>
            {
            typedef quat<T> type;
            };

        template <class T>
        struct
        deduce_quat<T const[4]>
            {
            typedef quat<T> type;
            };

        template <class T1,class T2>
        struct
        deduce_quat2<T1[4],T2[4]>
            {
            typedef quat<typename deduce_scalar<T1,T2>::type> type;
            };

        template <class T>
        T (&ptr_qref( T * ptr ))[4]
            {
            return *reinterpret_cast<T (*)[4]>(ptr);
            }
        }
    }

#endif