# QVM: Quaternions, Vectors, Matrices

### Type Traits

#include <boost/qvm/quat_traits.hpp>
#include <boost/qvm/mat_traits.hpp>
#include <boost/qvm/vec_traits.hpp>

    namespace
    boost
        {
        namespace
        qvm
            {
            //*** Type traits ***

            template <class T>
            struct is_quat
            {
                static bool const value=/*unspecified*/;
            };

            template <class Q>
            struct quat_traits
            {
                /*main template members unspecified*/
            };

            /*
            User-defined (possibly partial) specializations:

            template <>
            struct quat_traits<Q>
            {
                typedef /*user-defined*/ scalar_type;

                template <int I> static inline scalar_type read_element( Quaternion const & q );
                template <int I> static inline scalar_type & write_element( Quaternion & q );
            };
            */

            template <class T>
            struct is_vec
            {
                static bool const value=/*unspecified*/;
            };

            template <class V>
            struct vec_traits
            {
                /*main template members unspecified*/
            };

            /*
            User-defined (possibly partial) specializations:

            template <>
            struct vec_traits<V>
            {
                static int const dim = /*user-defined*/;
                typedef /*user-defined*/ scalar_type;

                template <int I> static inline scalar_type read_element( Vector const & v );
                template <int I> static inline scalar_type & write_element( Vector & v );

                static inline scalar_type read_element_idx( int i, Vector const & v );
                static inline scalar_type & write_element_idx( int i, Vector & v );
            };
            */

            template <class T>
            struct is_mat
            {
                static bool const value=/*unspecified*/;
            };

            template <class M>
            struct mat_traits
            {
                /*main template members unspecified*/
            };

            /*
            User-defined (possibly partial) specializations:

            template <>
            struct mat_traits<M>
            {
                static int const rows = /*user-defined*/;
                static int const cols = /*user-defined*/;
                typedef /*user-defined*/ scalar_type;

                template <int R,int C> static inline scalar_type read_element( Matrix const & m );
                template <int R,int C> static inline scalar_type & write_element( Matrix & m );

                static inline scalar_type read_element_idx( int r, int c, Matrix const & m );
                static inline scalar_type & write_element_idx( int r, int c, Matrix & m );
            };
            */
            }
        }

See also: Boost QVM | Synopsis