# QVM: Quaternions, Vectors, Matrices

### boost/qvm/vec_traits_defaults.hpp

#include <boost/qvm/vec_traits_defaults.hpp>

    namespace boost
    {
        namespace qvm
        {
            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 write_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 )
                {
                    /* unspecified */
                }
            };
        }
    }

See also: vec_traits_defaults