Boost.RangeEx merged into Boost.Range

[SVN r60897]

include/boost/range/algorithm/merge.hpp

@@ -0,0 +1,55 @@
+//  Copyright Neil Groves 2009. Use, modification and
+//  distribution is subject to 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)
+//
+//
+// For more information, see http://www.boost.org/libs/range/
+//
+#ifndef BOOST_RANGE_ALGORITHM_MERGE_HPP_INCLUDED
+#define BOOST_RANGE_ALGORITHM_MERGE_HPP_INCLUDED
+
+#include <boost/concept_check.hpp>
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+#include <boost/range/concepts.hpp>
+#include <algorithm>
+
+namespace boost
+{
+    /// \brief template function merge
+    ///
+    /// range-based version of the merge std algorithm
+    ///
+    /// \pre SinglePassRange1 is a model of the SinglePassRangeConcept
+    /// \pre SinglePassRange2 is a model of the SinglePassRangeConcept
+    /// \pre BinaryPredicate is a model of the BinaryPredicateConcept
+    ///
+    template<class SinglePassRange1, class SinglePassRange2,
+             class OutputIterator>
+    inline OutputIterator merge(const SinglePassRange1& rng1,
+                                const SinglePassRange2& rng2,
+                                OutputIterator          out)
+    {
+        boost::function_requires< SinglePassRangeConcept<SinglePassRange1> >();
+        boost::function_requires< SinglePassRangeConcept<SinglePassRange2> >();
+        return std::merge(boost::begin(rng1), boost::end(rng1),
+                          boost::begin(rng2), boost::end(rng2), out);
+    }
+
+    /// \overload
+    template<class SinglePassRange1, class SinglePassRange2,
+             class OutputIterator, class BinaryPredicate>
+    inline OutputIterator merge(const SinglePassRange1& rng1,
+                                const SinglePassRange2& rng2,
+                                OutputIterator          out,
+                                BinaryPredicate         pred)
+    {
+        boost::function_requires< SinglePassRangeConcept<SinglePassRange1> >();
+        boost::function_requires< SinglePassRangeConcept<SinglePassRange2> >();
+        return std::merge(boost::begin(rng1), boost::end(rng1),
+                          boost::begin(rng2), boost::end(rng2), out, pred);
+    }
+}
+
+#endif // include guard