ceph/src/boost/boost/qvm/mat.hpp

   1 #ifndef BOOST_QVM_MAT_HPP_INCLUDED
   2 #define BOOST_QVM_MAT_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/detail/mat_assign.hpp>
  10 #include <boost/qvm/assert.hpp>
  11 #include <boost/qvm/static_assert.hpp>
  12
  13 namespace boost { namespace qvm {
  14
  15 template <class T,int Rows,int Cols>
  16 struct
  17 mat
  18     {
  19     T a[Rows][Cols];
  20     template <class R>
  21     operator R() const
  22         {
  23         R r;
  24         assign(r,*this);
  25         return r;
  26         }
  27     };
  28
  29 template <class M>
  30 struct mat_traits;
  31
  32 template <class T,int Rows,int Cols>
  33 struct
  34 mat_traits< mat<T,Rows,Cols> >
  35     {
  36     typedef mat<T,Rows,Cols> this_matrix;
  37     typedef T scalar_type;
  38     static int const rows=Rows;
  39     static int const cols=Cols;
  40
  41     template <int Row,int Col>
  42     static
  43     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
  44     scalar_type
  45     read_element( this_matrix const & x )
  46         {
  47         BOOST_QVM_STATIC_ASSERT(Row>=0);
  48         BOOST_QVM_STATIC_ASSERT(Row<Rows);
  49         BOOST_QVM_STATIC_ASSERT(Col>=0);
  50         BOOST_QVM_STATIC_ASSERT(Col<Cols);
  51         return x.a[Row][Col];
  52         }
  53
  54     template <int Row,int Col>
  55     static
  56     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
  57     scalar_type &
  58     write_element( this_matrix & x )
  59         {
  60         BOOST_QVM_STATIC_ASSERT(Row>=0);
  61         BOOST_QVM_STATIC_ASSERT(Row<Rows);
  62         BOOST_QVM_STATIC_ASSERT(Col>=0);
  63         BOOST_QVM_STATIC_ASSERT(Col<Cols);
  64         return x.a[Row][Col];
  65         }
  66
  67     static
  68     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
  69     scalar_type
  70     read_element_idx( int row, int col, this_matrix const & x )
  71         {
  72         BOOST_QVM_ASSERT(row>=0);
  73         BOOST_QVM_ASSERT(row<Rows);
  74         BOOST_QVM_ASSERT(col>=0);
  75         BOOST_QVM_ASSERT(col<Cols);
  76         return x.a[row][col];
  77         }
  78
  79     static
  80     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
  81     scalar_type &
  82     write_element_idx( int row, int col, this_matrix & x )
  83         {
  84         BOOST_QVM_ASSERT(row>=0);
  85         BOOST_QVM_ASSERT(row<Rows);
  86         BOOST_QVM_ASSERT(col>=0);
  87         BOOST_QVM_ASSERT(col<Cols);
  88         return x.a[row][col];
  89         }
  90     };
  91
  92 } }
  93
  94 #endif