ceph/src/boost/boost/qvm/deduce_quat.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_435FA7E8196311E0A176DE6BDFD72085
   7 #define UUID_435FA7E8196311E0A176DE6BDFD72085
   8
   9 #include <boost/qvm/deduce_scalar.hpp>
  10 #include <boost/qvm/quat_traits.hpp>
  11 #include <boost/qvm/static_assert.hpp>
  12
  13 namespace
  14 boost
  15     {
  16     namespace
  17     qvm
  18         {
  19         template <class T>
  20         struct quat;
  21
  22         template <class Q>
  23         struct
  24         deduce_quat
  25             {
  26             BOOST_QVM_STATIC_ASSERT(is_quat<Q>::value);
  27             typedef Q type;
  28             };
  29
  30         namespace
  31         qvm_detail
  32             {
  33             template <class A,class B,
  34                 bool QA=is_quat<A>::value,
  35                 bool QB=is_quat<B>::value>
  36             struct
  37             deduce_quat2_default
  38                 {
  39                 typedef quat<
  40                     typename deduce_scalar<
  41                         typename scalar<A>::type,
  42                         typename scalar<B>::type>::type> type;
  43                 };
  44
  45             template <class Q>
  46             struct
  47             deduce_quat2_default<Q,Q,true,true>
  48                 {
  49                 typedef Q type;
  50                 };
  51             }
  52
  53         template <class A,class B>
  54         struct
  55         deduce_quat2
  56             {
  57             BOOST_QVM_STATIC_ASSERT(is_quat<A>::value || is_quat<B>::value);
  58             typedef typename qvm_detail::deduce_quat2_default<A,B>::type type;
  59             };
  60         }
  61     }
  62
  63 #endif