libcxx/include/__concepts/arithmetic.h

   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>
  14
  15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  16 #pragma GCC system_header
  17 #endif
  18
  19 _LIBCPP_BEGIN_NAMESPACE_STD
  20
  21 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
  22
  23 // [concepts.arithmetic], arithmetic concepts
  24
  25 template<class _Tp>
  26 concept integral = is_integral_v<_Tp>;
  27
  28 template<class _Tp>
  29 concept signed_integral = integral<_Tp> && is_signed_v<_Tp>;
  30
  31 template<class _Tp>
  32 concept unsigned_integral = integral<_Tp> && !signed_integral<_Tp>;
  33
  34 template<class _Tp>
  35 concept floating_point = is_floating_point_v<_Tp>;
  36
  37 // Concept helpers for the internal type traits for the fundamental types.
  38
  39 template <class _Tp>
  40 concept __libcpp_unsigned_integer = __libcpp_is_unsigned_integer<_Tp>::value;
  41 template <class _Tp>
  42 concept __libcpp_signed_integer = __libcpp_is_signed_integer<_Tp>::value;
  43
  44 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
  45
  46 _LIBCPP_END_NAMESPACE_STD
  47
  48 #endif // _LIBCPP___CONCEPTS_ARITHMETIC_H