63e88f80
 Hu Chunming
提交三方库
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/*=============================================================================
Copyright (c) 2012 Paul Fultz II
seq.h
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#ifndef BOOST_HOF_GUARD_FUNCTION_DETAIL_SEQ_H
#define BOOST_HOF_GUARD_FUNCTION_DETAIL_SEQ_H
#include <cstdlib>
namespace boost { namespace hof {
namespace detail {
template<std::size_t ...>
struct seq
{
typedef seq type;
};
template <class, class>
struct merge_seq;
template <size_t... Xs, size_t... Ys>
struct merge_seq<seq<Xs...>, seq<Ys...>>
: seq<Xs..., (sizeof...(Xs)+Ys)...>
{};
template<std::size_t N>
struct gens
: merge_seq<
typename gens<N/2>::type,
typename gens<N - N/2>::type
>
{};
template<> struct gens<0> : seq<> {};
template<> struct gens<1> : seq<0> {};
}
}} // namespace boost::hof
#endif
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