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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/25_algorithms/nth_element/1.cc | |
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Diffstat (limited to 'libstdc++-v3/testsuite/25_algorithms/nth_element/1.cc')
-rw-r--r-- | libstdc++-v3/testsuite/25_algorithms/nth_element/1.cc | 81 |
1 files changed, 81 insertions, 0 deletions
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 index 000000000..6f6b508cd --- /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(); +} |