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