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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#pragma once
#include <type_traits>
namespace Catch {
namespace Detail {
#if defined( __cpp_lib_logical_traits ) && __cpp_lib_logical_traits >= 201510
using std::conjunction;
using std::disjunction;
using std::negation;
#else
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional_t<bool( B1::value ), conjunction<Bn...>, B1> {};
template <class...> struct disjunction : std::false_type {};
template <class B1> struct disjunction<B1> : B1 {};
template <class B1, class... Bn>
struct disjunction<B1, Bn...>
: std::conditional_t<bool( B1::value ), B1, disjunction<Bn...>> {};
template <class B>
struct negation : std::integral_constant<bool, !bool(B::value)> {};
#endif
} // namespace Detail
} // namespace Catch
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