ceph/src/boost/libs/units/include/boost/units/detail/push_front_if.hpp

   1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
   2 // unit/quantity manipulation and conversion
   3 //
   4 // Copyright (C) 2003-2008 Matthias Christian Schabel
   5 // Copyright (C) 2008 Steven Watanabe
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See
   8 // accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_UNITS_DETAIL_PUSH_FRONT_IF_HPP
  12 #define BOOST_UNITS_DETAIL_PUSH_FRONT_IF_HPP
  13
  14 namespace boost {
  15
  16 namespace units {
  17
  18 template<class T, class Next>
  19 struct list;
  20
  21 namespace detail {
  22
  23 template<bool>
  24 struct push_front_if;
  25
  26 template<>
  27 struct push_front_if<true> {
  28     template<class L, class T>
  29     struct apply {
  30         typedef list<T, L> type;
  31     };
  32 };
  33
  34 template<>
  35 struct push_front_if<false> {
  36     template<class L, class T>
  37     struct apply {
  38         typedef L type;
  39     };
  40 };
  41
  42 }
  43
  44 }
  45
  46 }
  47
  48 #endif