ceph/src/boost/boost/icl/concept/interval_set_value.hpp

   1 /*-----------------------------------------------------------------------------+
   2 Copyright (c) 2010-2010: Joachim Faulhaber
   3 +------------------------------------------------------------------------------+
   4    Distributed under the Boost Software License, Version 1.0.
   5       (See accompanying file LICENCE.txt or copy at
   6            http://www.boost.org/LICENSE_1_0.txt)
   7 +-----------------------------------------------------------------------------*/
   8 #ifndef BOOST_ICL_CONCEPT_INTERVAL_SET_VALUE_HPP_JOFA_100924
   9 #define BOOST_ICL_CONCEPT_INTERVAL_SET_VALUE_HPP_JOFA_100924
  10
  11 #include <boost/utility/enable_if.hpp>
  12 #include <boost/icl/type_traits/is_interval_container.hpp>
  13 #include <boost/icl/concept/interval.hpp>
  14
  15 namespace boost{ namespace icl
  16 {
  17
  18 //==============================================================================
  19 //= AlgoUnifiers<Set>
  20 //==============================================================================
  21 template<class Type, class Iterator>
  22 inline typename enable_if<is_interval_set<Type>, typename Type::codomain_type>::type
  23 co_value(Iterator value_)
  24 {
  25     typedef typename Type::codomain_type codomain_type;
  26     return icl::is_empty(*value_)? codomain_type() : (*value_).lower();
  27 }
  28
  29 }} // namespace boost icl
  30
  31 #endif
  32
  33