101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
#ifndef BOOST_QVM_SCALAR_TRAITS_HPP_INCLUDED
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#define BOOST_QVM_SCALAR_TRAITS_HPP_INCLUDED
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/// Copyright (c) 2008-2021 Emil Dotchevski and Reverge Studios, Inc.
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/// Distributed under the Boost Software License, Version 1.0. (See accompanying
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/// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/qvm/quat_traits.hpp>
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#include <boost/qvm/vec_traits.hpp>
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#include <boost/qvm/mat_traits.hpp>
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#include <boost/qvm/inline.hpp>
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namespace boost { namespace qvm {
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template <class Scalar>
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struct
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scalar_traits
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{
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static
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BOOST_QVM_INLINE_CRITICAL
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Scalar
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value( int v )
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{
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return Scalar(v);
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}
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};
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template <class T>
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struct
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is_scalar
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{
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static bool const value=false;
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};
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template <> struct is_scalar<char> { static bool const value=true; };
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template <> struct is_scalar<signed char> { static bool const value=true; };
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template <> struct is_scalar<unsigned char> { static bool const value=true; };
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template <> struct is_scalar<signed short> { static bool const value=true; };
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template <> struct is_scalar<unsigned short> { static bool const value=true; };
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template <> struct is_scalar<signed int> { static bool const value=true; };
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template <> struct is_scalar<unsigned int> { static bool const value=true; };
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template <> struct is_scalar<signed long> { static bool const value=true; };
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template <> struct is_scalar<unsigned long> { static bool const value=true; };
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template <> struct is_scalar<float> { static bool const value=true; };
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template <> struct is_scalar<double> { static bool const value=true; };
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template <> struct is_scalar<long double> { static bool const value=true; };
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namespace
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qvm_detail
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{
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template <class A,
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bool IsQ=is_quat<A>::value,
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bool IsV=is_vec<A>::value,
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bool IsM=is_mat<A>::value,
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bool IsS=is_scalar<A>::value>
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struct
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scalar_impl
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{
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typedef void type;
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};
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template <class A>
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struct
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scalar_impl<A,false,false,false,true>
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{
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typedef A type;
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};
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template <class A>
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struct
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scalar_impl<A,false,false,true,false>
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{
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typedef typename mat_traits<A>::scalar_type type;
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};
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template <class A>
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struct
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scalar_impl<A,false,true,false,false>
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{
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typedef typename vec_traits<A>::scalar_type type;
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};
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template <class A>
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struct
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scalar_impl<A,true,false,false,false>
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{
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typedef typename quat_traits<A>::scalar_type type;
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};
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}
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template <class A>
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struct
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scalar
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{
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typedef typename qvm_detail::scalar_impl<A>::type type;
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};
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} }
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#endif
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