reverse_copy.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_ALGORITHM_REVERSE_COPY_HPP
#define TETL_ALGORITHM_REVERSE_COPY_HPP
 
namespace etl {
 
/// \brief Copies the elements from the range `[first, last)` to another range
/// beginning at d_first in such a way that the elements in the new range are in
/// reverse order.
/// \details If the source and destination ranges (that is, `[first, last)` and
/// [d_first, d_first+(last-first)) respectively) overlap, the behavior is
/// undefined.
/// \ingroup algorithm
template <typename BidirIt, typename OutputIt>
constexpr auto reverse_copy(BidirIt first, BidirIt last, OutputIt destination) -> OutputIt
{
    for (; first != last; ++destination) {
        *(destination) = *(--last);
    }
    return destination;
}
 
} // namespace etl
 
#endif // TETL_ALGORITHM_REVERSE_COPY_HPP