/usr/include/range/v3/numeric/accumulate.hpp is in librange-v3-dev 0.3.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | /// \file
// Range v3 library
//
// Copyright Eric Niebler 2013-present
//
// Use, modification and distribution is subject to 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)
//
// Project home: https://github.com/ericniebler/range-v3
//
#ifndef RANGES_V3_NUMERIC_ACCUMULATE_HPP
#define RANGES_V3_NUMERIC_ACCUMULATE_HPP
#include <meta/meta.hpp>
#include <range/v3/begin_end.hpp>
#include <range/v3/range_traits.hpp>
#include <range/v3/range_concepts.hpp>
#include <range/v3/utility/functional.hpp>
#include <range/v3/utility/iterator_traits.hpp>
#include <range/v3/utility/iterator_concepts.hpp>
#include <range/v3/utility/static_const.hpp>
namespace ranges
{
inline namespace v3
{
template<typename I, typename T, typename Op = plus, typename P = ident>
using Accumulateable = meta::strict_and<
InputIterator<I>,
IndirectInvocable<Op, T *, projected<I, P>>,
Assignable<T&, indirect_result_of_t<Op&(T *, projected<I, P>)>>>;
struct accumulate_fn
{
template<typename I, typename S, typename T, typename Op = plus, typename P = ident,
CONCEPT_REQUIRES_(Sentinel<S, I>() && Accumulateable<I, T, Op, P>())>
T operator()(I begin, S end, T init, Op op = Op{}, P proj = P{}) const
{
for(; begin != end; ++begin)
init = invoke(op, init, invoke(proj, *begin));
return init;
}
template<typename Rng, typename T, typename Op = plus, typename P = ident,
typename I = iterator_t<Rng>,
CONCEPT_REQUIRES_(Range<Rng>() && Accumulateable<I, T, Op, P>())>
T operator()(Rng && rng, T init, Op op = Op{}, P proj = P{}) const
{
return (*this)(begin(rng), end(rng), std::move(init), std::move(op),
std::move(proj));
}
};
RANGES_INLINE_VARIABLE(with_braced_init_args<accumulate_fn>, accumulate)
}
}
#endif
|