ceph/src/boost/libs/numeric/odeint/include/boost/numeric/odeint/util/is_resizeable.hpp

   1 /*
   2  [auto_generated]
   3  boost/numeric/odeint/util/is_resizeable.hpp
   4
   5  [begin_description]
   6  Metafunction to determine if a state type can resized. For usage in the steppers.
   7  [end_description]
   8
   9  Copyright 2011-2012 Karsten Ahnert
  10  Copyright 2011 Mario Mulansky
  11
  12  Distributed under the Boost Software License, Version 1.0.
  13  (See accompanying file LICENSE_1_0.txt or
  14  copy at http://www.boost.org/LICENSE_1_0.txt)
  15  */
  16
  17
  18 #ifndef BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED
  19 #define BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED
  20
  21
  22 #include <vector>
  23
  24 #include <boost/type_traits/integral_constant.hpp>
  25 #include <boost/type_traits/remove_reference.hpp>
  26 #include <boost/fusion/include/front.hpp>
  27 #include <boost/fusion/include/is_sequence.hpp>
  28
  29 #include <boost/mpl/find_if.hpp>
  30 #include <boost/mpl/end.hpp>
  31 #include <boost/mpl/placeholders.hpp>
  32 #include <boost/mpl/if.hpp>
  33 #include <boost/type_traits/is_same.hpp>
  34
  35 namespace boost {
  36 namespace numeric {
  37 namespace odeint {
  38
  39 /*
  40  * by default any type is not resizable
  41  */
  42 template< typename Container , typename Enabler = void >
  43 struct is_resizeable_sfinae : boost::false_type {};
  44
  45 template< typename Container >
  46 struct is_resizeable : is_resizeable_sfinae< Container > {};
  47
  48
  49
  50 /*
  51  * specialization for std::vector
  52  */
  53 template< class V, class A >
  54 struct is_resizeable< std::vector< V , A  > > : boost::true_type {};
  55
  56
  57 /*
  58  * sfinae specialization for fusion sequences
  59  */
  60 template< typename FusionSequence >
  61 struct is_resizeable_sfinae<
  62     FusionSequence ,
  63     typename boost::enable_if< typename boost::fusion::traits::is_sequence< FusionSequence >::type >::type >
  64 {
  65     typedef typename boost::mpl::find_if< FusionSequence , is_resizeable< boost::mpl::_1 > >::type iter;
  66     typedef typename boost::mpl::end< FusionSequence >::type last;
  67
  68     typedef typename boost::mpl::if_< boost::is_same< iter , last > , boost::false_type , boost::true_type >::type type;
  69     const static bool value = type::value;
  70 };
  71
  72
  73
  74
  75
  76
  77 } // namespace odeint
  78 } // namespace numeric
  79 } // namespace boost
  80
  81
  82
  83 #endif // BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED