68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
#ifndef BOOST_QVM_DETAIL_VEC_ASSIGN_HPP_INCLUDED
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#define BOOST_QVM_DETAIL_VEC_ASSIGN_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/gen/vec_assign2.hpp>
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#include <boost/qvm/gen/vec_assign3.hpp>
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#include <boost/qvm/gen/vec_assign4.hpp>
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namespace boost { namespace qvm {
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namespace
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qvm_detail
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{
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template <int D>
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struct
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assign_vv_defined
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{
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static bool const value=false;
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};
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template <int I,int N>
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struct
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copy_vector_elements
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{
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template <class A,class B>
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static
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void
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f( A & a, B const & b )
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{
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vec_traits<A>::template write_element<I>(a)=vec_traits<B>::template read_element<I>(b);
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copy_vector_elements<I+1,N>::f(a,b);
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}
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};
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template <int N>
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struct
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copy_vector_elements<N,N>
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{
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template <class A,class B>
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static
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void
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f( A &, B const & )
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{
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}
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};
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}
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template <class A,class B>
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inline
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typename enable_if_c<
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is_vec<A>::value && is_vec<B>::value &&
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vec_traits<A>::dim==vec_traits<B>::dim &&
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!qvm_detail::assign_vv_defined<vec_traits<A>::dim>::value,
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A &>::type
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assign( A & a, B const & b )
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{
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qvm_detail::copy_vector_elements<0,vec_traits<A>::dim>::f(a,b);
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return a;
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}
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} }
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#endif
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