90 lines
1.9 KiB
C++
90 lines
1.9 KiB
C++
#ifndef BOOST_QVM_VEC_HPP_INCLUDED
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#define BOOST_QVM_VEC_HPP_INCLUDED
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// Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/qvm/detail/vec_assign.hpp>
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#include <boost/qvm/assert.hpp>
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#include <boost/qvm/static_assert.hpp>
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namespace boost { namespace qvm {
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template <class T,int D>
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struct
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vec
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{
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T a[D];
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template <class R
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#if __cplusplus >= 201103L
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, class = typename enable_if<is_vec<R> >::type
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#endif
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>
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operator R() const
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{
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R r;
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assign(r,*this);
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return r;
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}
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};
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template <class V>
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struct vec_traits;
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template <class T,int Dim>
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struct
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vec_traits< vec<T,Dim> >
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{
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typedef vec<T,Dim> this_vector;
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typedef T scalar_type;
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static int const dim=Dim;
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template <int I>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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scalar_type
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read_element( this_vector const & x )
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{
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BOOST_QVM_STATIC_ASSERT(I>=0);
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BOOST_QVM_STATIC_ASSERT(I<dim);
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return x.a[I];
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}
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template <int I>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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scalar_type &
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write_element( this_vector & x )
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{
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BOOST_QVM_STATIC_ASSERT(I>=0);
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BOOST_QVM_STATIC_ASSERT(I<dim);
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return x.a[I];
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}
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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scalar_type
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read_element_idx( int i, this_vector const & x )
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{
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BOOST_QVM_ASSERT(i>=0);
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BOOST_QVM_ASSERT(i<dim);
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return x.a[i];
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}
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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scalar_type &
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write_element_idx( int i, this_vector & x )
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{
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BOOST_QVM_ASSERT(i>=0);
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BOOST_QVM_ASSERT(i<dim);
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return x.a[i];
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}
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};
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} }
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#endif
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