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/*
* Copyright (c) 2017 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __ARM_COMPUTE_MISC_UTILITY_H__
#define __ARM_COMPUTE_MISC_UTILITY_H__
#include <array>
namespace arm_compute
{
namespace utility
{
/** @cond */
template <std::size_t...>
struct index_sequence
{
};
template <std::size_t N, std::size_t... S>
struct index_sequence_generator : index_sequence_generator < N - 1, N - 1, S... >
{
};
template <std::size_t... S>
struct index_sequence_generator<0u, S...> : index_sequence<S...>
{
using type = index_sequence<S...>;
};
template <std::size_t N>
using index_sequence_t = typename index_sequence_generator<N>::type;
/** @endcond */
namespace detail
{
template <std::size_t... S,
typename Iterator,
typename T = std::array<typename std::iterator_traits<Iterator>::value_type, sizeof...(S)>>
T make_array(Iterator first, index_sequence<S...>)
{
return T{ { first[S]... } };
}
} // namespace detail
template <std::size_t N, typename Iterator>
std::array<typename std::iterator_traits<Iterator>::value_type, N> make_array(Iterator first, Iterator last)
{
return detail::make_array(first, index_sequence_t<N> {});
}
} // namespace misc
} // namespace arm_compute
#endif /* __ARM_COMPUTE_MISC_UTILITY_H__ */
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