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composable_kernel/include/ck/utility/sequence_helper.hpp

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885 B
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// Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
// SPDX-License-Identifier: MIT
#pragma once
#include "ck/utility/tuple.hpp"
namespace ck {
template <index_t... Is>
__host__ __device__ constexpr auto make_sequence(Number<Is>...)
{
return Sequence<Is...>{};
}
// F returns index_t
template <typename F, index_t N>
__host__ __device__ constexpr auto generate_sequence(F, Number<N>)
{
return typename sequence_gen<N, F>::type{};
}
// F returns Number<>
template <typename F, index_t N>
__host__ __device__ constexpr auto generate_sequence_v2(F&& f, Number<N>)
{
return unpack([&f](auto&&... xs) { return make_sequence(f(xs)...); },
typename arithmetic_sequence_gen<0, N, 1>::type{});
}
template <index_t... Is>
__host__ __device__ constexpr auto to_sequence(Tuple<Number<Is>...>)
{
return Sequence<Is...>{};
}
} // namespace ck