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vec_traits_defaults.hpp
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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 BOOST_QVM_DFFD61ACC72311E6955FFF1F07624D53 #define BOOST_QVM_DFFD61ACC72311E6955FFF1F07624D53 #include <boost/qvm/inline.hpp> #include <boost/qvm/assert.hpp> namespace boost { namespace qvm { template <class> struct vec_traits; namespace qvm_detail { template <int I,int N> struct vector_w { template <class A> static BOOST_QVM_INLINE_CRITICAL typename vec_traits<A>::scalar_type & write_element_idx( int i, A & a ) { return I==i? vec_traits<A>::template write_element<I>(a) : vector_w<I+1,N>::write_element_idx(i,a); } }; template <int N> struct vector_w<N,N> { template <class A> static BOOST_QVM_INLINE_TRIVIAL typename vec_traits<A>::scalar_type & write_element_idx( int, A & a ) { BOOST_QVM_ASSERT(0); return vec_traits<A>::template write_element<0>(a); } }; } template <class VecType,class ScalarType,int Dim> struct vec_traits_defaults { typedef VecType vec_type; typedef ScalarType scalar_type; static int const dim=Dim; template <int I> static BOOST_QVM_INLINE_CRITICAL scalar_type read_element( vec_type const & x ) { return vec_traits<vec_type>::template write_element<I>(const_cast<vec_type &>(x)); } static BOOST_QVM_INLINE_CRITICAL scalar_type read_element_idx( int i, vec_type const & x ) { return vec_traits<vec_type>::write_element_idx(i,const_cast<vec_type &>(x)); } protected: static BOOST_QVM_INLINE_TRIVIAL scalar_type & write_element_idx( int i, vec_type & m ) { return qvm_detail::vector_w<0,vec_traits<vec_type>::dim>::write_element_idx(i,m); } }; } } #endif