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// Copyright 2009-2014 Neil Groves.
// 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)
//
// Copyright 2006 Thorsten Ottosen.
// 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)
//
// Copyright 2004 Eric Niebler.
// 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)
//
// Contains range-based versions of the numeric std algorithms
//
#if defined(_MSC_VER)
#pragma once
#endif
#ifndef BOOST_RANGE_NUMERIC_HPP
#define BOOST_RANGE_NUMERIC_HPP
#include <boost/config.hpp>
#include <boost/assert.hpp>
#include <boost/range/begin.hpp>
#include <boost/range/end.hpp>
#include <boost/range/category.hpp>
#include <boost/range/concepts.hpp>
#include <boost/range/distance.hpp>
#include <boost/range/size.hpp>
#include <numeric>
namespace boost
{
template<class SinglePassRange, class Value>
inline Value accumulate(const SinglePassRange& rng, Value init)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return std::accumulate(boost::begin(rng), boost::end(rng), init);
}
template<class SinglePassRange, class Value, class BinaryOperation>
inline Value accumulate(const SinglePassRange& rng, Value init,
BinaryOperation op)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange> ));
return std::accumulate(boost::begin(rng), boost::end(rng), init, op);
}
namespace range_detail
{
template<class SinglePassRange1, class SinglePassRange2>
inline bool inner_product_precondition(
const SinglePassRange1&,
const SinglePassRange2&,
std::input_iterator_tag,
std::input_iterator_tag)
{
return true;
}
template<class SinglePassRange1, class SinglePassRange2>
inline bool inner_product_precondition(
const SinglePassRange1& rng1,
const SinglePassRange2& rng2,
std::forward_iterator_tag,
std::forward_iterator_tag)
{
return boost::size(rng2) >= boost::size(rng1);
}
} // namespace range_detail
template<
class SinglePassRange1,
class SinglePassRange2,
class Value
>
inline Value inner_product(
const SinglePassRange1& rng1,
const SinglePassRange2& rng2,
Value init)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange1>));
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange2>));
BOOST_ASSERT(
range_detail::inner_product_precondition(
rng1, rng2,
typename range_category<const SinglePassRange1>::type(),
typename range_category<const SinglePassRange2>::type()));
return std::inner_product(
boost::begin(rng1), boost::end(rng1),
boost::begin(rng2), init);
}
template<
class SinglePassRange1,
class SinglePassRange2,
class Value,
class BinaryOperation1,
class BinaryOperation2
>
inline Value inner_product(
const SinglePassRange1& rng1,
const SinglePassRange2& rng2,
Value init,
BinaryOperation1 op1,
BinaryOperation2 op2)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange1>));
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange2>));
BOOST_ASSERT(
range_detail::inner_product_precondition(
rng1, rng2,
typename range_category<const SinglePassRange1>::type(),
typename range_category<const SinglePassRange2>::type()));
return std::inner_product(
boost::begin(rng1), boost::end(rng1),
boost::begin(rng2), init, op1, op2);
}
template<class SinglePassRange, class OutputIterator>
inline OutputIterator partial_sum(const SinglePassRange& rng,
OutputIterator result)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return std::partial_sum(boost::begin(rng), boost::end(rng), result);
}
template<class SinglePassRange, class OutputIterator, class BinaryOperation>
inline OutputIterator partial_sum(
const SinglePassRange& rng,
OutputIterator result,
BinaryOperation op)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return std::partial_sum(boost::begin(rng), boost::end(rng), result, op);
}
template<class SinglePassRange, class OutputIterator>
inline OutputIterator adjacent_difference(
const SinglePassRange& rng,
OutputIterator result)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return std::adjacent_difference(boost::begin(rng), boost::end(rng),
result);
}
template<class SinglePassRange, class OutputIterator, class BinaryOperation>
inline OutputIterator adjacent_difference(
const SinglePassRange& rng,
OutputIterator result,
BinaryOperation op)
{
BOOST_RANGE_CONCEPT_ASSERT((
SinglePassRangeConcept<const SinglePassRange>));
return std::adjacent_difference(boost::begin(rng), boost::end(rng),
result, op);
}
} // namespace boost
#endif
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