ceph/src/boost/boost/qvm/detail/mat_assign.hpp

   1 #ifndef BOOST_QVM_DETAIL_MAT_ASSIGN_HPP_INCLUDED
   2 #define BOOST_QVM_DETAIL_MAT_ASSIGN_HPP_INCLUDED
   3
   4 // Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
   5
   6 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   7 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #include <boost/qvm/gen/mat_assign2.hpp>
  10 #include <boost/qvm/gen/mat_assign3.hpp>
  11 #include <boost/qvm/gen/mat_assign4.hpp>
  12
  13 namespace boost { namespace qvm {
  14
  15 namespace
  16 qvm_detail
  17     {
  18     template <int M,int N>
  19     struct
  20     assign_mm_defined
  21         {
  22         static bool const value=false;
  23         };
  24
  25     template <int I,int N>
  26     struct
  27     copy_matrix_elements
  28         {
  29         template <class A,class B>
  30         static
  31         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
  32         void
  33         f( A & a, B const & b )
  34             {
  35             mat_traits<A>::template write_element<I/mat_traits<A>::cols,I%mat_traits<A>::cols>(a) =
  36                 mat_traits<B>::template read_element<I/mat_traits<B>::cols,I%mat_traits<B>::cols>(b);
  37             copy_matrix_elements<I+1,N>::f(a,b);
  38             }
  39         };
  40
  41     template <int N>
  42     struct
  43     copy_matrix_elements<N,N>
  44         {
  45         template <class A,class B>
  46         static
  47         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
  48         void
  49         f( A &, B const & )
  50             {
  51             }
  52         };
  53     }
  54
  55 template <class A,class B>
  56 BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
  57 typename enable_if_c<
  58     is_mat<A>::value && is_mat<B>::value &&
  59     mat_traits<A>::rows==mat_traits<B>::rows &&
  60     mat_traits<A>::cols==mat_traits<B>::cols &&
  61     !qvm_detail::assign_mm_defined<mat_traits<A>::rows,mat_traits<A>::cols>::value,
  62     A &>::type
  63 assign( A & a, B const & b )
  64     {
  65     qvm_detail::copy_matrix_elements<0,mat_traits<A>::rows*mat_traits<A>::cols>::f(a,b);
  66     return a;
  67     }
  68
  69 } }
  70
  71 #endif