Initial drop of Boost v1.44. This isn't the full library, just a subset that includes the more useful ones like shared_ptr and threads. Currently not wired into anything.

2010-11-20 07:52:11 +00:00
parent 0c4b43a491
commit 4a0965c853
2360 changed files with 335870 additions and 0 deletions
@@ -0,0 +1,84 @@
+// Boost.Units - A C++ library for zero-overhead dimensional analysis and 
+// unit/quantity manipulation and conversion
+//
+// Copyright (C) 2003-2008 Matthias Christian Schabel
+// Copyright (C) 2008 Steven Watanabe
+//
+// 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_UNITS_DETAIL_PUSH_FRONT_OR_ADD_HPP
+#define BOOST_UNITS_DETAIL_PUSH_FRONT_OR_ADD_HPP
+
+#include <boost/mpl/plus.hpp>
+#include <boost/mpl/front.hpp>
+#include <boost/mpl/push_front.hpp>
+#include <boost/mpl/pop_front.hpp>
+#include <boost/type_traits/is_same.hpp>
+
+#include <boost/units/units_fwd.hpp>
+#include <boost/units/detail/push_front_if.hpp>
+
+namespace boost {
+
+namespace units {
+
+template<class Item, class Next>
+struct list;
+
+namespace detail {
+
+template<class T>
+struct is_empty_dim;
+
+/// add an instantiation of dim to Sequence.
+template<bool>
+struct push_front_or_add_impl;
+
+template<>
+struct push_front_or_add_impl<true>
+{
+    template<typename Sequence, typename T>
+    struct apply
+    {
+        typedef typename mpl::plus<T, typename Sequence::item>::type item;
+        typedef typename push_front_if<!is_empty_dim<item>::value>::template apply<
+            typename Sequence::next,
+            item
+        > type;
+    };
+};
+
+template<>
+struct push_front_or_add_impl<false>
+{
+    template<typename Sequence, typename T>
+    struct apply
+    {
+        typedef list<T, Sequence> type;
+    };
+};
+
+template<typename Sequence, typename T>
+struct push_front_or_add
+{
+    typedef typename push_front_or_add_impl<boost::is_same<typename T::tag_type, typename Sequence::item::tag_type>::value>::template apply<
+        Sequence,
+        T
+    >::type type;
+};
+
+template<typename T>
+struct push_front_or_add<dimensionless_type, T>
+{
+    typedef list<T, dimensionless_type> type;
+};
+
+} // namespace detail
+
+} // namespace units
+
+} // namespace boost
+
+#endif