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44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
// SPDX-License-Identifier: MIT
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// Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.
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#pragma once
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namespace ck {
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namespace detail {
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template <class Default, class AlwaysVoid, template <class...> class Op, class... Args>
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struct detector
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{
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using value_t = ck::false_type;
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using type = Default;
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};
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template <class Default, template <class...> class Op, class... Args>
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struct detector<Default, ck::void_t<Op<Args...>>, Op, Args...>
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{
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using value_t = ck::true_type;
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using type = Op<Args...>;
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};
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} // namespace detail
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struct nonesuch
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{
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~nonesuch() = delete;
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nonesuch(nonesuch const&) = delete;
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void operator=(nonesuch const&) = delete;
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};
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template <template <class...> class Op, class... Args>
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using is_detected = typename detail::detector<nonesuch, void, Op, Args...>::value_t;
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template <typename T>
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using is_pack2_invocable_t = decltype(ck::declval<T&>().is_pack2_invocable);
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template <typename T>
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using is_pack4_invocable_t = decltype(ck::declval<T&>().is_pack4_invocable);
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template <typename T>
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using is_pack8_invocable_t = decltype(ck::declval<T&>().is_pack8_invocable);
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} // namespace ck
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