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commit 0eb2d7c07d
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--- a/extern/stdcxx/4.2.1/examples/manual/includes.cpp
+++ b/extern/stdcxx/4.2.1/examples/manual/includes.cpp
@@ -0,0 +1,74 @@
+/**************************************************************************
+ *
+ * includes.cpp - Example program of basic set operation for sorted 
+ *                sequences.
+ *
+ * $Id: includes.cpp 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <algorithm>   // for includes
+#include <iostream>    // for cout, endl
+#include <iterator>    // for ostream_iterator
+#include <set>         // for set
+
+#include <examples.h>
+
+
+int main ()
+{
+    // Typedefs for convenience.
+    typedef std::set<int, std::less<int>, std::allocator<int> >       Set;
+    typedef std::ostream_iterator<int, char, std::char_traits<char> > os_iter;
+
+    int a1[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+    int a2[] = { 2, 4, 6, 8, 10, 12 };
+    int a3[] = { 3, 5, 7, 8 };
+
+    // Initialize three sets.
+    Set all   (a1, a1 + sizeof a1 / sizeof *a1);
+    Set even  (a2, a2 + sizeof a2 / sizeof *a2);
+    Set other (a3, a3 + sizeof a3 / sizeof *a3);
+
+    // Demonstrate includes.
+    std::cout << "The set: ";
+    std::copy (all.begin (), all.end (), os_iter (std::cout, " "));
+
+    bool answer = std::includes (all.begin (), all.end (), 
+                                 other.begin (), other.end ());
+
+    std::cout << std::endl << (answer ? "INCLUDES " : "DOES NOT INCLUDE ");
+    std::copy (other.begin (), other.end (), os_iter (std::cout, " "));
+
+    answer = std::includes (all.begin (), all.end (),
+                            even.begin (), even.end ());
+
+    std::cout << ", and" << std::endl
+              << (answer ? "INCLUDES" : "DOES NOT INCLUDE ");
+
+    std::copy (even.begin (), even.end (), os_iter (std::cout, " "));
+
+    std::cout << std::endl << std::endl;
+
+    return 0;
+}