96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
#ifndef BOOST_QVM_DEDUCE_VEC_HPP_INCLUDED
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#define BOOST_QVM_DEDUCE_VEC_HPP_INCLUDED
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// Copyright 2008-2022 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/deduce_scalar.hpp>
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#include <boost/qvm/vec_traits.hpp>
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#include <boost/qvm/static_assert.hpp>
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namespace boost { namespace qvm {
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template <class T,int D>
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struct vec;
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namespace
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qvm_detail
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{
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template <class V,int D,class S,
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int VD=vec_traits<V>::dim,
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class VS=typename vec_traits<V>::scalar_type>
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struct
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deduce_v_default
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<V>::value);
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typedef vec<typename vec_traits<V>::scalar_type,D> type;
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};
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template <class V,int D,class S>
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struct
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deduce_v_default<V,D,S,D,S>
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<V>::value);
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typedef V type;
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};
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}
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template <class V,int D=vec_traits<V>::dim,class S=typename vec_traits<V>::scalar_type>
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struct
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deduce_vec
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<V>::value);
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typedef typename qvm_detail::deduce_v_default<V,D,S>::type type;
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};
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namespace
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qvm_detail
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{
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template <class A,class B,int D,class S,
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bool IsScalarA=is_scalar<A>::value,
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bool IsScalarB=is_scalar<B>::value>
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struct
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deduce_v2_default
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{
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typedef vec<S,D> type;
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};
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template <class V,int D,class S>
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struct
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deduce_v2_default<V,V,D,S,false,false>
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<V>::value);
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typedef V type;
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};
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template <class A,class B,int D,class S>
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struct
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deduce_v2_default<A,B,D,S,false,true>
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<A>::value);
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typedef typename deduce_vec<A,D,S>::type type;
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};
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template <class A,class B,int D,class S>
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struct
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deduce_v2_default<A,B,D,S,true,false>
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<B>::value);
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typedef typename deduce_vec<B,D,S>::type type;
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};
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}
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template <class A,class B,int D,class S=typename deduce_scalar<typename scalar<A>::type,typename scalar<B>::type>::type>
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struct
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deduce_vec2
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{
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BOOST_QVM_STATIC_ASSERT(is_vec<A>::value || is_vec<B>::value);
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typedef typename qvm_detail::deduce_v2_default<A,B,D,S>::type type;
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};
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} }
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#endif
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