boost/qvm/vec_traits_defaults.hpp

   1 //Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.\r
   2 \r
   3 //Distributed under the Boost Software License, Version 1.0. (See accompanying\r
   4 //file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
   5 \r
   6 #ifndef UUID_DFFD61ACC72311E6955FFF1F07624D53\r
   7 #define UUID_DFFD61ACC72311E6955FFF1F07624D53\r
   8 \r
   9 #include <boost/qvm/inline.hpp>\r
  10 #include <boost/qvm/assert.hpp>\r
  11 \r
  12 namespace\r
  13 boost\r
  14     {\r
  15     namespace\r
  16     qvm\r
  17         {\r
  18         template <class>\r
  19         struct vec_traits;\r
  20 \r
  21         namespace\r
  22         qvm_detail\r
  23             {\r
  24             template <int I,int N>\r
  25             struct\r
  26             vector_w\r
  27                 {\r
  28                 template <class A>\r
  29                 static\r
  30                 BOOST_QVM_INLINE_CRITICAL\r
  31                 typename vec_traits<A>::scalar_type &\r
  32                 write_element_idx( int i, A & a )\r
  33                     {\r
  34                     return I==i?\r
  35                         vec_traits<A>::template write_element<I>(a) :\r
  36                         vector_w<I+1,N>::write_element_idx(i,a);\r
  37                     }\r
  38                 };\r
  39 \r
  40             template <int N>\r
  41             struct\r
  42             vector_w<N,N>\r
  43                 {\r
  44                 template <class A>\r
  45                 static\r
  46                 BOOST_QVM_INLINE_TRIVIAL\r
  47                 typename vec_traits<A>::scalar_type &\r
  48                 write_element_idx( int, A & a )\r
  49                     {\r
  50                     BOOST_QVM_ASSERT(0);\r
  51                     return vec_traits<A>::template write_element<0>(a);\r
  52                     }\r
  53                 };\r
  54             }\r
  55 \r
  56         template <class VecType,class ScalarType,int Dim>\r
  57         struct\r
  58         vec_traits_defaults\r
  59             {\r
  60             typedef VecType vec_type;\r
  61             typedef ScalarType scalar_type;\r
  62             static int const dim=Dim;\r
  63 \r
  64             template <int I>\r
  65             static\r
  66             BOOST_QVM_INLINE_CRITICAL\r
  67             scalar_type\r
  68             read_element( vec_type const & x )\r
  69                 {\r
  70                 return vec_traits<vec_type>::template write_element<I>(const_cast<vec_type &>(x));\r
  71                 }\r
  72 \r
  73             static\r
  74             BOOST_QVM_INLINE_CRITICAL\r
  75             scalar_type\r
  76             read_element_idx( int i, vec_type const & x )\r
  77                 {\r
  78                 return vec_traits<vec_type>::write_element_idx(i,const_cast<vec_type &>(x));\r
  79                 }\r
  80 \r
  81             protected:\r
  82 \r
  83             static\r
  84             BOOST_QVM_INLINE_TRIVIAL\r
  85             scalar_type &\r
  86             write_element_idx( int i, vec_type & m )\r
  87                 {\r
  88                 return qvm_detail::vector_w<0,vec_traits<vec_type>::dim>::write_element_idx(i,m);\r
  89                 }\r
  90             };\r
  91         }\r
  92     }\r
  93 \r
  94 #endif\r