OTS/OTSCPP/Tools/boost/qvm/scalar_traits.hpp

//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_57E1C032B9F311DEB7D9BAFE55D89593
#define BOOST_QVM_57E1C032B9F311DEB7D9BAFE55D89593

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

namespace
boost
    {
    namespace
    qvm
        {
        template <class Scalar>
        struct
        scalar_traits
            {
            static
            BOOST_QVM_INLINE_CRITICAL
            Scalar
            value( int v )
                {
                return Scalar(v);
                }
            };

        template <class T>
        struct
        is_scalar
            {
            static bool const value=false;
            };
        template <> struct is_scalar<char> { static bool const value=true; };
        template <> struct is_scalar<signed char> { static bool const value=true; };
        template <> struct is_scalar<unsigned char> { static bool const value=true; };
        template <> struct is_scalar<signed short> { static bool const value=true; };
        template <> struct is_scalar<unsigned short> { static bool const value=true; };
        template <> struct is_scalar<signed int> { static bool const value=true; };
        template <> struct is_scalar<unsigned int> { static bool const value=true; };
        template <> struct is_scalar<signed long> { static bool const value=true; };
        template <> struct is_scalar<unsigned long> { static bool const value=true; };
        template <> struct is_scalar<float> { static bool const value=true; };
        template <> struct is_scalar<double> { static bool const value=true; };
        template <> struct is_scalar<long double> { static bool const value=true; };

        namespace
        qvm_detail
            {
            template <class A,bool M=is_mat<A>::value,bool Q=is_quat<A>::value,bool V=is_vec<A>::value>
            struct
            scalar_impl
                {
                };

            template <class A>
            struct
            scalar_impl<A,true,false,false>
                {
                typedef typename mat_traits<A>::scalar_type type;
                };

            template <class A>
            struct
            scalar_impl<A,false,true,false>
                {
                typedef typename quat_traits<A>::scalar_type type;
                };

            template <class A>
            struct
            scalar_impl<A,false,false,true>
                {
                typedef typename vec_traits<A>::scalar_type type;
                };
            }

        template <class A>
        struct
        scalar
            {
            typedef typename qvm_detail::scalar_impl<A>::type type;
            };
        }
    }

#endif