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___CONCEPTS_ARITHMETIC_H
10#define _LIBCPP___CONCEPTS_ARITHMETIC_H
11
12#include <__config>
13#include <__type_traits/is_floating_point.h>
14#include <__type_traits/is_integral.h>
15#include <__type_traits/is_signed.h>
16#include <__type_traits/is_signed_integer.h>
17#include <__type_traits/is_unsigned_integer.h>
18
19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
20#  pragma GCC system_header
21#endif
22
23_LIBCPP_BEGIN_NAMESPACE_STD
24
25#if _LIBCPP_STD_VER >= 20
26
27// [concepts.arithmetic], arithmetic concepts
28
29template <class _Tp>
30concept integral = is_integral_v<_Tp>;
31
32template <class _Tp>
33concept signed_integral = integral<_Tp> && is_signed_v<_Tp>;
34
35template <class _Tp>
36concept unsigned_integral = integral<_Tp> && !signed_integral<_Tp>;
37
38template <class _Tp>
39concept floating_point = is_floating_point_v<_Tp>;
40
41// Concept helpers for the internal type traits for the fundamental types.
42
43template <class _Tp>
44concept __libcpp_unsigned_integer = __libcpp_is_unsigned_integer<_Tp>::value;
45
46template <class _Tp>
47concept __libcpp_signed_integer = __libcpp_is_signed_integer<_Tp>::value;
48
49template <class _Tp>
50concept __libcpp_integer = __libcpp_unsigned_integer<_Tp> || __libcpp_signed_integer<_Tp>;
51
52#endif // _LIBCPP_STD_VER >= 20
53
54_LIBCPP_END_NAMESPACE_STD
55
56#endif // _LIBCPP___CONCEPTS_ARITHMETIC_H
57