Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 25_algorithms / nth_element / 1.cc

diff --git a/libstdc++-v3/testsuite/25_algorithms/nth_element/1.cc b/libstdc++-v3/testsuite/25_algorithms/nth_element/1.cc
new file mode 100644 (file)
index 0000000..6f6b508
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/nth_element/1.cc
@@ -0,0 +1,81 @@
+// Copyright (C) 2005, 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/>.
+
+// 25.3.2 [lib.alg.nth.element]
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <testsuite_iterators.h>
+
+using __gnu_test::test_container;
+using __gnu_test::random_access_iterator_wrapper;
+using std::nth_element;
+using std::partial_sort;
+
+typedef test_container<int, random_access_iterator_wrapper> Container;
+
+void 
+test1()
+{
+  int array[]={0};
+  Container con(array, array);
+  partial_sort(con.begin(), con.begin(), con.end());
+}
+
+void 
+test2()
+{
+  int array[]={2,1,0};
+  Container con(array, array + 2);
+  partial_sort(con.begin(), con.begin(), con.end());
+  partial_sort(con.begin(), con.end(), con.end());
+}
+
+void 
+test3()
+{
+  bool test __attribute__((unused)) = true;
+  int array[] = {6, 5, 4, 3, 2, 1, 0};
+  Container con(array, array + 7);
+  nth_element(con.begin(), con.it(3), con.end());
+  for(int i = 0; i < 3; ++i)
+    VERIFY(array[i] < array[3]);
+  for(int i = 4; i < 7; ++i)
+    VERIFY(array[3] < array[i]);
+}
+
+void 
+test4()
+{
+  bool test __attribute__((unused)) = true;
+  int array[] = {0, 6, 1, 5, 2, 4, 3};
+  Container con(array,array + 7);
+  nth_element(con.begin(), con.it(3), con.end());
+  for(int i = 0; i < 3; ++i)
+    VERIFY(array[i] < array[3]);
+  for(int i = 4; i < 7; ++i)
+    VERIFY(array[3] < array[i]);
+}
+
+int 
+main()
+{
+  test1();
+  test2();
+  test3();
+  test4();
+}