ClickHouse/contrib/libboost/boost_1_65_0/boost/qvm/vec.hpp

//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_44EB56F0A33711DEB31B41BB56D89593
#define UUID_44EB56F0A33711DEB31B41BB56D89593

#include <boost/qvm/detail/vec_assign.hpp>
#include <boost/qvm/assert.hpp>
#include <boost/qvm/static_assert.hpp>

namespace
boost
    {
    namespace
    qvm
        {
        template <class T,int D>
        struct
        vec
            {
            T a[D];
            template <class R>
            operator R() const
                {
                R r;
                assign(r,*this);
                return r;
                }
            };

        template <class V>
        struct vec_traits;

        template <class T,int Dim>
        struct
        vec_traits< vec<T,Dim> >
            {
            typedef vec<T,Dim> this_vector;
            typedef T scalar_type;
            static int const dim=Dim;

            template <int I>
            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type
            read_element( this_vector const & x )
                {
                BOOST_QVM_STATIC_ASSERT(I>=0);
                BOOST_QVM_STATIC_ASSERT(I<dim);
                return x.a[I];
                }

            template <int I>
            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type &
            write_element( this_vector & x )
                {
                BOOST_QVM_STATIC_ASSERT(I>=0);
                BOOST_QVM_STATIC_ASSERT(I<dim);
                return x.a[I];
                }

            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type
            read_element_idx( int i, this_vector const & x )
                {
                BOOST_QVM_ASSERT(i>=0);
                BOOST_QVM_ASSERT(i<dim);
                return x.a[i];
                }

            static
            BOOST_QVM_INLINE_CRITICAL
            scalar_type &
            write_element_idx( int i, this_vector & x )
                {
                BOOST_QVM_ASSERT(i>=0);
                BOOST_QVM_ASSERT(i<dim);
                return x.a[i];
                }
            };
        }
    }

#endif