qvm/detail/mat_assign.hpp

0001 #ifndef BOOST_QVM_DETAIL_MAT_ASSIGN_HPP_INCLUDED
0002 #define BOOST_QVM_DETAIL_MAT_ASSIGN_HPP_INCLUDED
0003
0004 // Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
0005
0006 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0007 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0008
0009 #include <boost/qvm/gen/mat_assign2.hpp>
0010 #include <boost/qvm/gen/mat_assign3.hpp>
0011 #include <boost/qvm/gen/mat_assign4.hpp>
0012
0013 namespace boost { namespace qvm {
0014
0015 namespace
0016 qvm_detail
0017     {
0018     template <int M,int N>
0019     struct
0020     assign_mm_defined
0021         {
0022         static bool const value=false;
0023         };
0024
0025     template <int I,int N>
0026     struct
0027     copy_matrix_elements
0028         {
0029         template <class A,class B>
0030         static
0031         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0032         typename enable_if_c<
0033             mat_write_element_ref<A>::value,
0034             void>::type
0035         f( A & a, B const & b )
0036             {
0037             mat_traits<A>::template write_element<I/mat_traits<A>::cols,I%mat_traits<A>::cols>(a) =
0038                 mat_traits<B>::template read_element<I/mat_traits<B>::cols,I%mat_traits<B>::cols>(b);
0039             copy_matrix_elements<I+1,N>::f(a,b);
0040             }
0041
0042         template <class A,class B>
0043         static
0044         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0045         typename enable_if_c<
0046             !mat_write_element_ref<A>::value,
0047             void>::type
0048         f( A & a, B const & b )
0049             {
0050             mat_traits<A>::template write_element<I/mat_traits<A>::cols,I%mat_traits<A>::cols>(a,
0051                 mat_traits<B>::template read_element<I/mat_traits<B>::cols,I%mat_traits<B>::cols>(b));
0052             copy_matrix_elements<I+1,N>::f(a,b);
0053             }
0054         };
0055
0056     template <int N>
0057     struct
0058     copy_matrix_elements<N,N>
0059         {
0060         template <class A,class B>
0061         static
0062         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0063         void
0064         f( A &, B const & )
0065             {
0066             }
0067         };
0068     }
0069
0070 template <class A,class B>
0071 BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
0072 typename enable_if_c<
0073     is_mat<A>::value && is_mat<B>::value &&
0074     mat_traits<A>::rows==mat_traits<B>::rows &&
0075     mat_traits<A>::cols==mat_traits<B>::cols &&
0076     !qvm_detail::assign_mm_defined<mat_traits<A>::rows,mat_traits<A>::cols>::value,
0077     A &>::type
0078 assign( A & a, B const & b )
0079     {
0080     qvm_detail::copy_matrix_elements<0,mat_traits<A>::rows*mat_traits<A>::cols>::f(a,b);
0081     return a;
0082     }
0083
0084 } }
0085
0086 #endif