ceph/src/boost/boost/accumulators/statistics/max.hpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // max.hpp
   3 //
   4 //  Copyright 2005 Eric Niebler. Distributed under the Boost
   5 //  Software License, Version 1.0. (See accompanying file
   6 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7
   8 #ifndef BOOST_ACCUMULATORS_STATISTICS_MAX_HPP_EAN_28_10_2005
   9 #define BOOST_ACCUMULATORS_STATISTICS_MAX_HPP_EAN_28_10_2005
  10
  11 #include <limits>
  12 #include <boost/mpl/placeholders.hpp>
  13 #include <boost/accumulators/framework/accumulator_base.hpp>
  14 #include <boost/accumulators/framework/extractor.hpp>
  15 #include <boost/accumulators/framework/parameters/sample.hpp>
  16 #include <boost/accumulators/numeric/functional.hpp>
  17 #include <boost/accumulators/framework/depends_on.hpp>
  18 #include <boost/accumulators/statistics_fwd.hpp>
  19
  20 namespace boost { namespace accumulators
  21 {
  22
  23 namespace impl
  24 {
  25     ///////////////////////////////////////////////////////////////////////////////
  26     // max_impl
  27     template<typename Sample>
  28     struct max_impl
  29       : accumulator_base
  30     {
  31         // for boost::result_of
  32         typedef Sample result_type;
  33
  34         template<typename Args>
  35         max_impl(Args const &args)
  36           : max_(numeric::as_min(args[sample | Sample()]))
  37         {
  38         }
  39
  40         template<typename Args>
  41         void operator ()(Args const &args)
  42         {
  43             numeric::max_assign(this->max_, args[sample]);
  44         }
  45
  46         result_type result(dont_care) const
  47         {
  48             return this->max_;
  49         }
  50
  51         // make this accumulator serializeable
  52         template<class Archive>
  53         void serialize(Archive & ar, const unsigned int file_version)
  54         {
  55             ar & max_;
  56         }
  57
  58     private:
  59         Sample max_;
  60     };
  61
  62 } // namespace impl
  63
  64 ///////////////////////////////////////////////////////////////////////////////
  65 // tag::max
  66 //
  67 namespace tag
  68 {
  69     struct max
  70       : depends_on<>
  71     {
  72         /// INTERNAL ONLY
  73         ///
  74         typedef accumulators::impl::max_impl<mpl::_1> impl;
  75     };
  76 }
  77
  78 ///////////////////////////////////////////////////////////////////////////////
  79 // extract::max
  80 //
  81 namespace extract
  82 {
  83     extractor<tag::max> const max = {};
  84
  85     BOOST_ACCUMULATORS_IGNORE_GLOBAL(max)
  86 }
  87
  88 using extract::max;
  89
  90 }} // namespace boost::accumulators
  91
  92 #endif