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+
+// Copyright Oliver Kowalke 2013.
+// Distributed under 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)
+
+#ifndef BOOST_FIBERS_DETAIL_CONVERT_H
+#define BOOST_FIBERS_DETAIL_CONVERT_H
+
+#include <chrono>
+#include <memory>
+
+#include <boost/config.hpp>
+
+#include <boost/fiber/detail/config.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_PREFIX
+#endif
+
+namespace boost {
+namespace fibers {
+namespace detail {
+
+inline
+std::chrono::steady_clock::time_point convert(
+ std::chrono::steady_clock::time_point const& timeout_time) noexcept {
+ return timeout_time;
+}
+
+template< typename Clock, typename Duration >
+std::chrono::steady_clock::time_point convert(
+ std::chrono::time_point< Clock, Duration > const& timeout_time) {
+ return std::chrono::steady_clock::now() + ( timeout_time - Clock::now() );
+}
+
+// suggested by Howard Hinnant
+template< typename T >
+inline
+T * convert( T * p) noexcept {
+ return p;
+}
+
+template< typename Pointer >
+inline
+typename std::pointer_traits< Pointer >::element_type *
+convert( Pointer p) noexcept {
+ return nullptr != p
+ ? to_raw_pointer( p.operator->() )
+ : nullptr;
+}
+
+}}}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_SUFFIX
+#endif
+
+#endif // BOOST_FIBERS_DETAIL_CONVERT_H