--- /dev/null
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 26.4.4 [lib.adjacent.difference]
+
+#include <algorithm>
+#include <numeric>
+#include <testsuite_hooks.h>
+
+int A[] = {1, 4, 9, 16, 25, 36, 49, 64, 81, 100};
+int B[] = {1, 3, 5, 7, 9, 11, 13, 15, 17, 19};
+const int N = sizeof(A) / sizeof(int);
+
+void
+test01()
+{
+ bool test __attribute__((unused)) = true;
+
+ int D[N];
+
+ std::adjacent_difference(A, A + N, D);
+ VERIFY( std::equal(D, D + N, B) );
+}
+
+int
+main()
+{
+ test01();
+ return 0;
+}