ceph/src/boost/libs/icl/include/boost/icl/concept/comparable.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_COMPARABLE_HPP_JOFA_100921
   9 #define BOOST_ICL_CONCEPT_COMPARABLE_HPP_JOFA_100921
  10
  11 #include <boost/utility/enable_if.hpp>
  12 #include <boost/icl/type_traits/is_icl_container.hpp>
  13
  14 namespace boost{ namespace icl
  15 {
  16
  17 //==============================================================================
  18 //= Equivalences and Orderings<Comparable>
  19 //==============================================================================
  20 template<class Type>
  21 inline typename enable_if<is_icl_container<Type>, bool>::type
  22 operator != (const Type& left, const Type& right)
  23 { return !(left == right); }
  24
  25 template<class Type>
  26 inline typename enable_if<is_icl_container<Type>, bool>::type
  27 operator > (const Type& left, const Type& right)
  28 { return right < left; }
  29
  30 /** Partial ordering which is induced by Compare */
  31 template<class Type>
  32 inline typename enable_if<is_icl_container<Type>, bool>::type
  33 operator <= (const Type& left, const Type& right)
  34 { return !(left > right); }
  35
  36 template<class Type>
  37 inline typename enable_if<is_icl_container<Type>, bool>::type
  38 operator >= (const Type& left, const Type& right)
  39 { return !(left < right); }
  40
  41 }} // namespace boost icl
  42
  43 #endif
  44
  45