| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___UTILITY_CONVERT_TO_INTEGRAL_H |
| #define _LIBCPP___UTILITY_CONVERT_TO_INTEGRAL_H |
| |
| #include <__config> |
| #include <__type_traits/enable_if.h> |
| #include <__type_traits/is_enum.h> |
| #include <__type_traits/is_floating_point.h> |
| #include <__type_traits/underlying_type.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| int __convert_to_integral(int __val) { return __val; } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| unsigned __convert_to_integral(unsigned __val) { return __val; } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| long __convert_to_integral(long __val) { return __val; } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| unsigned long __convert_to_integral(unsigned long __val) { return __val; } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| long long __convert_to_integral(long long __val) { return __val; } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| unsigned long long __convert_to_integral(unsigned long long __val) {return __val; } |
| |
| template<typename _Fp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| typename enable_if<is_floating_point<_Fp>::value, long long>::type |
| __convert_to_integral(_Fp __val) { return __val; } |
| |
| #ifndef _LIBCPP_HAS_NO_INT128 |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| __int128_t __convert_to_integral(__int128_t __val) { return __val; } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| __uint128_t __convert_to_integral(__uint128_t __val) { return __val; } |
| #endif |
| |
| template <class _Tp, bool = is_enum<_Tp>::value> |
| struct __sfinae_underlying_type |
| { |
| typedef typename underlying_type<_Tp>::type type; |
| typedef decltype(((type)1) + 0) __promoted_type; |
| }; |
| |
| template <class _Tp> |
| struct __sfinae_underlying_type<_Tp, false> {}; |
| |
| template <class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| typename __sfinae_underlying_type<_Tp>::__promoted_type |
| __convert_to_integral(_Tp __val) { return __val; } |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___UTILITY_CONVERT_TO_INTEGRAL_H |
