91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
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#ifndef BOOST_QVM_VEC_TRAITS_DEFAULTS_HPP_INCLUDED
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#define BOOST_QVM_VEC_TRAITS_DEFAULTS_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/config.hpp>
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#include <boost/qvm/assert.hpp>
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namespace boost { namespace qvm {
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template <class>
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struct vec_traits;
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namespace
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qvm_detail
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{
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template <int I,int N>
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struct
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vector_w
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{
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template <class A>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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typename vec_traits<A>::scalar_type &
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write_element_idx( int i, A & a )
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{
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return I==i?
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vec_traits<A>::template write_element<I>(a) :
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vector_w<I+1,N>::write_element_idx(i,a);
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}
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};
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template <int N>
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struct
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vector_w<N,N>
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{
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template <class A>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
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typename vec_traits<A>::scalar_type &
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write_element_idx( int, A & a )
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{
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BOOST_QVM_ASSERT(0);
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return vec_traits<A>::template write_element<0>(a);
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}
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};
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}
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template <class VecType,class ScalarType,int Dim>
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struct
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vec_traits_defaults
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{
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typedef VecType vec_type;
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typedef ScalarType 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( vec_type const & x )
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{
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return vec_traits<vec_type>::template write_element<I>(const_cast<vec_type &>(x));
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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, vec_type const & x )
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{
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return vec_traits<vec_type>::write_element_idx(i,const_cast<vec_type &>(x));
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}
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protected:
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
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scalar_type &
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write_element_idx( int i, vec_type & m )
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{
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return qvm_detail::vector_w<0,vec_traits<vec_type>::dim>::write_element_idx(i,m);
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}
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};
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} }
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#endif
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