ceph/src/boost/boost/qvm/mat_traits_defaults.hpp

   1 //Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.
   2
   3 //Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef UUID_FB4D5BEAC71B11E68D0EEF1707624D53
   7 #define UUID_FB4D5BEAC71B11E68D0EEF1707624D53
   8
   9 #include <boost/qvm/inline.hpp>
  10 #include <boost/qvm/assert.hpp>
  11
  12 namespace
  13 boost
  14     {
  15     namespace
  16     qvm
  17         {
  18         template <class>
  19         struct mat_traits;
  20
  21         namespace
  22         qvm_detail
  23             {
  24             template <int I,int N>
  25             struct
  26             matrix_w
  27                 {
  28                 template <class A>
  29                 static
  30                 BOOST_QVM_INLINE_CRITICAL
  31                 typename mat_traits<A>::scalar_type &
  32                 write_element_idx( int r, int c, A & a )
  33                     {
  34                     return (I/mat_traits<A>::cols)==r && (I%mat_traits<A>::cols)==c?
  35                         mat_traits<A>::template write_element<I/mat_traits<A>::cols,I%mat_traits<A>::cols>(a) :
  36                         matrix_w<I+1,N>::write_element_idx(r,c,a);
  37                     }
  38                 };
  39
  40             template <int N>
  41             struct
  42             matrix_w<N,N>
  43                 {
  44                 template <class A>
  45                 static
  46                 BOOST_QVM_INLINE_TRIVIAL
  47                 typename mat_traits<A>::scalar_type &
  48                 write_element_idx( int, int, A & a )
  49                     {
  50                     BOOST_QVM_ASSERT(0);
  51                     return mat_traits<A>::template write_element<0,0>(a);
  52                     }
  53                 };
  54             }
  55
  56         template <class MatType,class ScalarType,int Rows,int Cols>
  57         struct
  58         mat_traits_defaults
  59             {
  60             typedef MatType mat_type;
  61             typedef ScalarType scalar_type;
  62             static int const rows=Rows;
  63             static int const cols=Cols;
  64
  65             template <int Row,int Col>
  66             static
  67             BOOST_QVM_INLINE_CRITICAL
  68             scalar_type
  69             read_element( mat_type const & x )
  70                 {
  71                 return mat_traits<mat_type>::template write_element<Row,Col>(const_cast<mat_type &>(x));
  72                 }
  73
  74             static
  75             BOOST_QVM_INLINE_CRITICAL
  76             scalar_type
  77             read_element_idx( int r, int c, mat_type const & x )
  78                 {
  79                 return mat_traits<mat_type>::write_element_idx(r,c,const_cast<mat_type &>(x));
  80                 }
  81
  82             protected:
  83
  84             static
  85             BOOST_QVM_INLINE_TRIVIAL
  86             scalar_type &
  87             write_element_idx( int r, int c, mat_type & m )
  88                 {
  89                 return qvm_detail::matrix_w<0,mat_traits<mat_type>::rows*mat_traits<mat_type>::cols>::write_element_idx(r,c,m);
  90                 }
  91             };
  92         }
  93     }
  94
  95 #endif