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- // (C) Copyright Matt Borland 2022.
- // Use, modification and distribution are subject to the
- // Boost Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
- // Macros that substitute for STL concepts or typename depending on availability of <concepts>
- #ifndef BOOST_MATH_TOOLS_CONCEPTS_HPP
- #define BOOST_MATH_TOOLS_CONCEPTS_HPP
- // LLVM clang supports concepts but apple's clang does not fully support at version 13
- // See: https://en.cppreference.com/w/cpp/compiler_support/20
- #if (__cplusplus > 202000L || _MSVC_LANG > 202000L)
- # if __has_include(<concepts>) && (!defined(__APPLE__) || (defined(__APPLE__) && defined(__clang__) && __clang__ > 13))
- # include <concepts>
- # define BOOST_MATH_FLOATING_POINT_TYPE std::floating_point
- # else
- # define BOOST_MATH_FLOATING_POINT_TYPE typename
- # endif
- #else
- # define BOOST_MATH_FLOATING_POINT_TYPE typename
- #endif
- #endif // BOOST_MATH_TOOLS_CONCEPTS_HPP
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