Incomplete work for using Boost.Polygon to compute medial axis

xs/src/boost/detail/winapi/timers.hpp

@@ -0,0 +1,44 @@
+//  timers.hpp  --------------------------------------------------------------//
+
+//  Copyright 2010 Vicente J. Botet Escriba
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+
+#ifndef BOOST_DETAIL_WINAPI_TIMERS_HPP
+#define BOOST_DETAIL_WINAPI_TIMERS_HPP
+
+#include <boost/detail/winapi/basic_types.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost
+{
+namespace detail
+{
+namespace winapi
+{
+#if defined( BOOST_USE_WINDOWS_H )
+    using ::QueryPerformanceCounter;
+    using ::QueryPerformanceFrequency;
+#else
+extern "C" { 
+    __declspec(dllimport) BOOL_ WINAPI
+        QueryPerformanceCounter(
+            LARGE_INTEGER_ *lpPerformanceCount
+        );
+
+    __declspec(dllimport) BOOL_ WINAPI
+        QueryPerformanceFrequency(
+            LARGE_INTEGER_ *lpFrequency
+        );
+}
+#endif
+}
+}
+}
+
+#endif // BOOST_DETAIL_WINAPI_TIMERS_HPP