forked from enlightenment/efl
32 lines
733 B
C++
32 lines
733 B
C++
#ifndef EFL_EINA_EINA_ALIGNED_UNION_HH_
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#define EFL_EINA_EINA_ALIGNED_UNION_HH_
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namespace efl { namespace eina { namespace _mpl {
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template <std::size_t...Numbers>
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struct max;
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template <std::size_t A0>
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struct max<A0> : std::integral_constant<std::size_t, A0> {};
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template <std::size_t A0, std::size_t A1, std::size_t...Args>
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struct max<A0, A1, Args...> : max<(A0 > A1 ? A0 : A1), Args...> {};
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}
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// Workaround needed for GCC before 5.1
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template <std::size_t Min, typename...Args>
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struct aligned_union
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{
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static constexpr std::size_t alignment_value = _mpl::max<alignof(Args)...>::value;
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typedef typename std::aligned_storage
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< _mpl::max<Min, sizeof(Args)...>::value
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, alignment_value >::type type;
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};
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} }
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#endif
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