stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

2026-02-24 18:38:47 +00:00
parent da8c28aaeb
commit 65cb2619a7
13106 changed files with 2484322 additions and 1804 deletions
@@ -0,0 +1,71 @@
+/*!
+@file
+Defines `boost::hana::greater`.
+
+@copyright Louis Dionne 2013-2017
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_HANA_GREATER_HPP
+#define BOOST_HANA_GREATER_HPP
+
+#include <boost/hana/fwd/greater.hpp>
+
+#include <boost/hana/concept/orderable.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/common.hpp>
+#include <boost/hana/core/to.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/detail/concepts.hpp>
+#include <boost/hana/detail/has_common_embedding.hpp>
+#include <boost/hana/detail/nested_than.hpp> // required by fwd decl
+#include <boost/hana/if.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename X, typename Y>
+    constexpr decltype(auto) greater_t::operator()(X&& x, Y&& y) const {
+        using T = typename hana::tag_of<X>::type;
+        using U = typename hana::tag_of<Y>::type;
+        using Greater = BOOST_HANA_DISPATCH_IF(decltype(greater_impl<T, U>{}),
+            hana::Orderable<T>::value &&
+            hana::Orderable<U>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Orderable<T>::value,
+        "hana::greater(x, y) requires 'x' to be Orderable");
+
+        static_assert(hana::Orderable<U>::value,
+        "hana::greater(x, y) requires 'y' to be Orderable");
+    #endif
+
+        return Greater::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
+    }
+    //! @endcond
+    template <typename T, typename U, bool condition>
+    struct greater_impl<T, U, when<condition>> : default_ {
+        template <typename X, typename Y>
+        static constexpr decltype(auto) apply(X&& x, Y&& y) {
+            return hana::less(static_cast<Y&&>(y),
+                              static_cast<X&&>(x));
+        }
+    };
+
+    // Cross-type overload
+    template <typename T, typename U>
+    struct greater_impl<T, U, when<
+        detail::has_nontrivial_common_embedding<Orderable, T, U>::value
+    >> {
+        using C = typename hana::common<T, U>::type;
+        template <typename X, typename Y>
+        static constexpr decltype(auto) apply(X&& x, Y&& y) {
+            return hana::greater(hana::to<C>(static_cast<X&&>(x)),
+                                 hana::to<C>(static_cast<Y&&>(y)));
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_GREATER_HPP