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loop unrolling for fusion iteration algorithms

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[SVN r37806]
This commit is contained in:
Dan Marsden
2007-05-28 23:12:53 +00:00
parent 2c7e484787
commit b935ea84a9
5 changed files with 324 additions and 121 deletions
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36
include/boost/fusion/algorithm/iteration/accumulate.hpp
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@ -7,9 +7,7 @@
#if !defined(FUSION_ACCUMULATE_09172005_1032)
#define FUSION_ACCUMULATE_09172005_1032
#include <boost/fusion/algorithm/iteration/detail/fold.hpp>
#include <boost/fusion/iterator/equal_to.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>
#include <boost/fusion/algorithm/iteration/fold.hpp>
namespace boost { namespace fusion
{
@ -19,46 +17,22 @@ namespace boost { namespace fusion
{
template <typename Sequence, typename State, typename F>
struct accumulate
{
typedef typename
detail::static_fold<
typename result_of::begin<Sequence>::type
, typename result_of::end<Sequence>::type
, State
, F
>::type
type;
};
: result_of::fold<Sequence, State, F>
{};
}
template <typename Sequence, typename State, typename F>
inline typename result_of::accumulate<Sequence, State, F>::type
accumulate(Sequence& seq, State const& state, F const& f)
{
return detail::fold(
fusion::begin(seq)
, fusion::end(seq)
, state
, f
, result_of::equal_to<
typename result_of::begin<Sequence>::type
, typename result_of::end<Sequence>::type>()
);
return fusion::fold(seq, state, f);
}
template <typename Sequence, typename State, typename F>
inline typename result_of::accumulate<Sequence const, State, F>::type
accumulate(Sequence const& seq, State const& state, F const& f)
{
return detail::fold(
fusion::begin(seq)
, fusion::end(seq)
, state
, f
, result_of::equal_to<
typename result_of::begin<Sequence const>::type
, typename result_of::end<Sequence const>::type>()
);
return fusion::fold(seq, state, f);
}
}}