boost/charconv/detail/apply_sign.hpp
// Copyright 2023 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt #ifndef BOOST_CHARCONV_DETAIL_APPLY_SIGN_HPP #define BOOST_CHARCONV_DETAIL_APPLY_SIGN_HPP #include <boost/config.hpp> #include <boost/charconv/detail/emulated128.hpp> #include <boost/charconv/detail/type_traits.hpp> #include <type_traits> // We are purposefully converting values here #ifdef BOOST_MSVC # pragma warning(push) # pragma warning(disable: 4146) #elif defined(__GNUC__) && __GNUC__ >= 5 # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wconversion" #elif defined(__clang__) # pragma clang diagnostic push # pragma clang diagnostic ignored "-Wconversion" #endif namespace boost { namespace charconv { namespace detail { template <typename Integer, typename Unsigned_Integer = detail::make_unsigned_t<Integer>, typename std::enable_if<detail::is_signed<Integer>::value, bool>::type = true> constexpr Unsigned_Integer apply_sign(Integer val) noexcept { return -(static_cast<Unsigned_Integer>(val)); } template <typename Unsigned_Integer, typename std::enable_if<!detail::is_signed<Unsigned_Integer>::value, bool>::type = true> constexpr Unsigned_Integer apply_sign(Unsigned_Integer val) noexcept { return val; } }}} // Namespaces #ifdef BOOST_MSVC # pragma warning(pop) #elif defined(__GNUC__) && __GNUC__ >= 5 # pragma GCC diagnostic pop #elif defined(__clang__) # pragma clang diagnostic pop #endif #endif // BOOST_CHARCONV_DETAIL_APPLY_SIGN_HPP