projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*! |
| 2 | @file | |
| 3 | Defines arithmetic operators. | |
| 4 | ||
| 5 | @copyright Louis Dionne 2013-2016 | |
| 6 | Distributed under the Boost Software License, Version 1.0. | |
| 7 | (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef BOOST_HANA_DETAIL_OPERATORS_ARITHMETIC_HPP | |
| 11 | #define BOOST_HANA_DETAIL_OPERATORS_ARITHMETIC_HPP | |
| 12 | ||
| 13 | #include <boost/hana/config.hpp> | |
| 14 | #include <boost/hana/core/tag_of.hpp> | |
| 15 | #include <boost/hana/fwd/div.hpp> | |
| 16 | #include <boost/hana/fwd/minus.hpp> | |
| 17 | #include <boost/hana/fwd/mod.hpp> | |
| 18 | #include <boost/hana/fwd/mult.hpp> | |
| 19 | #include <boost/hana/fwd/negate.hpp> | |
| 20 | #include <boost/hana/fwd/plus.hpp> | |
| 21 | ||
| 22 | #include <type_traits> | |
| 23 | ||
| 24 | ||
| 25 | BOOST_HANA_NAMESPACE_BEGIN namespace detail { | |
| 26 | template <typename Tag> | |
| 27 | struct arithmetic_operators { | |
| 28 | static constexpr bool value = false; | |
| 29 | }; | |
| 30 | ||
| 31 | namespace operators { | |
| 32 | template <typename X, typename Y, typename = typename std::enable_if< | |
| 33 | detail::arithmetic_operators<typename hana::tag_of<X>::type>::value || | |
| 34 | detail::arithmetic_operators<typename hana::tag_of<Y>::type>::value | |
| 35 | >::type> | |
| 36 | constexpr auto operator+(X&& x, Y&& y) | |
| 37 | { return hana::plus(static_cast<X&&>(x), static_cast<Y&&>(y)); } | |
| 38 | ||
| 39 | ||
| 40 | template <typename X, typename Y, typename = typename std::enable_if< | |
| 41 | detail::arithmetic_operators<typename hana::tag_of<X>::type>::value || | |
| 42 | detail::arithmetic_operators<typename hana::tag_of<Y>::type>::value | |
| 43 | >::type> | |
| 44 | constexpr auto operator-(X&& x, Y&& y) | |
| 45 | { return hana::minus(static_cast<X&&>(x), static_cast<Y&&>(y)); } | |
| 46 | ||
| 47 | template <typename X, typename = typename std::enable_if< | |
| 48 | detail::arithmetic_operators<typename hana::tag_of<X>::type>::value | |
| 49 | >::type> | |
| 50 | constexpr auto operator-(X&& x) | |
| 51 | { return hana::negate(static_cast<X&&>(x)); } | |
| 52 | ||
| 53 | ||
| 54 | template <typename X, typename Y, typename = typename std::enable_if< | |
| 55 | detail::arithmetic_operators<typename hana::tag_of<X>::type>::value || | |
| 56 | detail::arithmetic_operators<typename hana::tag_of<Y>::type>::value | |
| 57 | >::type> | |
| 58 | constexpr auto operator*(X&& x, Y&& y) | |
| 59 | { return hana::mult(static_cast<X&&>(x), static_cast<Y&&>(y)); } | |
| 60 | ||
| 61 | ||
| 62 | template <typename X, typename Y, typename = typename std::enable_if< | |
| 63 | detail::arithmetic_operators<typename hana::tag_of<X>::type>::value || | |
| 64 | detail::arithmetic_operators<typename hana::tag_of<Y>::type>::value | |
| 65 | >::type> | |
| 66 | constexpr auto operator/(X&& x, Y&& y) | |
| 67 | { return hana::div(static_cast<X&&>(x), static_cast<Y&&>(y)); } | |
| 68 | ||
| 69 | template <typename X, typename Y, typename = typename std::enable_if< | |
| 70 | detail::arithmetic_operators<typename hana::tag_of<X>::type>::value || | |
| 71 | detail::arithmetic_operators<typename hana::tag_of<Y>::type>::value | |
| 72 | >::type> | |
| 73 | constexpr auto operator%(X&& x, Y&& y) | |
| 74 | { return hana::mod(static_cast<X&&>(x), static_cast<Y&&>(y)); } | |
| 75 | } // end namespace operators | |
| 76 | } BOOST_HANA_NAMESPACE_END | |
| 77 | ||
| 78 | #endif // !BOOST_HANA_DETAIL_OPERATORS_ARITHMETIC_HPP |