1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___TYPE_TRAITS_IS_INTEGRAL_H 10 #define _LIBCPP___TYPE_TRAITS_IS_INTEGRAL_H 11 12 #include <__config> 13 #include <__type_traits/integral_constant.h> 14 #include <__type_traits/remove_cv.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _Tp> struct __libcpp_is_integral { enum { value = 0 }; }; 23 template <> struct __libcpp_is_integral<bool> { enum { value = 1 }; }; 24 template <> struct __libcpp_is_integral<char> { enum { value = 1 }; }; 25 template <> struct __libcpp_is_integral<signed char> { enum { value = 1 }; }; 26 template <> struct __libcpp_is_integral<unsigned char> { enum { value = 1 }; }; 27 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 28 template <> struct __libcpp_is_integral<wchar_t> { enum { value = 1 }; }; 29 #endif 30 #ifndef _LIBCPP_HAS_NO_CHAR8_T 31 template <> struct __libcpp_is_integral<char8_t> { enum { value = 1 }; }; 32 #endif 33 template <> struct __libcpp_is_integral<char16_t> { enum { value = 1 }; }; 34 template <> struct __libcpp_is_integral<char32_t> { enum { value = 1 }; }; 35 template <> struct __libcpp_is_integral<short> { enum { value = 1 }; }; 36 template <> struct __libcpp_is_integral<unsigned short> { enum { value = 1 }; }; 37 template <> struct __libcpp_is_integral<int> { enum { value = 1 }; }; 38 template <> struct __libcpp_is_integral<unsigned int> { enum { value = 1 }; }; 39 template <> struct __libcpp_is_integral<long> { enum { value = 1 }; }; 40 template <> struct __libcpp_is_integral<unsigned long> { enum { value = 1 }; }; 41 template <> struct __libcpp_is_integral<long long> { enum { value = 1 }; }; 42 template <> struct __libcpp_is_integral<unsigned long long> { enum { value = 1 }; }; 43 #ifndef _LIBCPP_HAS_NO_INT128 44 template <> struct __libcpp_is_integral<__int128_t> { enum { value = 1 }; }; 45 template <> struct __libcpp_is_integral<__uint128_t> { enum { value = 1 }; }; 46 #endif 47 48 #if __has_builtin(__is_integral) 49 50 template <class _Tp> 51 struct _LIBCPP_TEMPLATE_VIS is_integral : _BoolConstant<__is_integral(_Tp)> { }; 52 53 #if _LIBCPP_STD_VER > 14 54 template <class _Tp> 55 inline constexpr bool is_integral_v = __is_integral(_Tp); 56 #endif 57 58 #else 59 60 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_integral 61 : public _BoolConstant<__libcpp_is_integral<typename remove_cv<_Tp>::type>::value> {}; 62 63 #if _LIBCPP_STD_VER > 14 64 template <class _Tp> 65 inline constexpr bool is_integral_v = is_integral<_Tp>::value; 66 #endif 67 68 #endif // __has_builtin(__is_integral) 69 70 _LIBCPP_END_NAMESPACE_STD 71 72 #endif // _LIBCPP___TYPE_TRAITS_IS_INTEGRAL_H 73