5d4439cc3e
release/17.x branch, commit 8f4dd44097c9ae25dd203d5ac87f3b48f854bba8 This adds the flag `-D_LIBCPP_PSTL_CPU_BACKEND_SERIAL`. A future enhancement could possibly pass something different if there is a compelling parallel implementation. That libdispatch one might be worth looking into.
76 lines
2.4 KiB
C++
Vendored
76 lines
2.4 KiB
C++
Vendored
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___TUPLE_TUPLE_SIZE_H
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#define _LIBCPP___TUPLE_TUPLE_SIZE_H
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#include <__config>
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#include <__fwd/tuple.h>
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#include <__tuple/tuple_types.h>
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#include <__type_traits/is_const.h>
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#include <__type_traits/is_volatile.h>
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#include <cstddef>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size;
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#if !defined(_LIBCPP_CXX03_LANG)
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template <class _Tp, class...>
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using __enable_if_tuple_size_imp = _Tp;
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template <class _Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__enable_if_tuple_size_imp<
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const _Tp,
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__enable_if_t<!is_volatile<_Tp>::value>,
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integral_constant<size_t, sizeof(tuple_size<_Tp>)>>>
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: public integral_constant<size_t, tuple_size<_Tp>::value> {};
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template <class _Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__enable_if_tuple_size_imp<
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volatile _Tp,
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__enable_if_t<!is_const<_Tp>::value>,
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integral_constant<size_t, sizeof(tuple_size<_Tp>)>>>
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: public integral_constant<size_t, tuple_size<_Tp>::value> {};
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template <class _Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__enable_if_tuple_size_imp<
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const volatile _Tp,
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integral_constant<size_t, sizeof(tuple_size<_Tp>)>>>
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: public integral_constant<size_t, tuple_size<_Tp>::value> {};
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#else
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size<const _Tp> : public tuple_size<_Tp> {};
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size<volatile _Tp> : public tuple_size<_Tp> {};
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size<const volatile _Tp> : public tuple_size<_Tp> {};
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#endif
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#ifndef _LIBCPP_CXX03_LANG
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template <class ..._Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<tuple<_Tp...> >
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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template <class ..._Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__tuple_types<_Tp...> >
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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#endif // _LIBCPP_CXX03_LANG
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___TUPLE_TUPLE_SIZE_H
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