boost/qvm/scalar_traits.hpp

0001 #ifndef BOOST_QVM_SCALAR_TRAITS_HPP_INCLUDED
0002 #define BOOST_QVM_SCALAR_TRAITS_HPP_INCLUDED
0003
0004 // Copyright 2008-2024 Emil Dotchevski and Reverge Studios, Inc.
0005 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0006 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0007
0008 #include <boost/qvm/quat_traits.hpp>
0009 #include <boost/qvm/vec_traits.hpp>
0010 #include <boost/qvm/mat_traits.hpp>
0011 #include <boost/qvm/config.hpp>
0012
0013 namespace boost { namespace qvm {
0014
0015 template <class Scalar>
0016 struct
0017 scalar_traits
0018     {
0019     static
0020     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0021     Scalar
0022     value( int v )
0023         {
0024         return Scalar(v);
0025         }
0026     };
0027
0028 namespace
0029 qvm_detail
0030     {
0031     template <class A,
0032         bool IsQ=is_quat<A>::value,
0033         bool IsV=is_vec<A>::value,
0034         bool IsM=is_mat<A>::value,
0035         bool IsS=is_scalar<A>::value>
0036     struct
0037     scalar_impl
0038         {
0039         typedef void type;
0040         };
0041
0042     template <class A>
0043     struct
0044     scalar_impl<A,false,false,false,true>
0045         {
0046         typedef A type;
0047         };
0048
0049     template <class A>
0050     struct
0051     scalar_impl<A,false,false,true,false>
0052         {
0053         typedef typename mat_traits<A>::scalar_type type;
0054         };
0055
0056     template <class A>
0057     struct
0058     scalar_impl<A,false,true,false,false>
0059         {
0060         typedef typename vec_traits<A>::scalar_type type;
0061         };
0062
0063     template <class A>
0064     struct
0065     scalar_impl<A,true,false,false,false>
0066         {
0067         typedef typename quat_traits<A>::scalar_type type;
0068         };
0069     }
0070
0071 template <class A>
0072 struct
0073 scalar
0074     {
0075     typedef typename qvm_detail::scalar_impl<A>::type type;
0076     };
0077
0078 } }
0079
0080 #endif