summaryrefslogtreecommitdiff
path: root/libstdc++-v3/testsuite/25_algorithms/random_shuffle
diff options
context:
space:
mode:
authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/25_algorithms/random_shuffle
downloadcbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2
cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository.
Diffstat (limited to 'libstdc++-v3/testsuite/25_algorithms/random_shuffle')
-rw-r--r--libstdc++-v3/testsuite/25_algorithms/random_shuffle/1.cc74
-rw-r--r--libstdc++-v3/testsuite/25_algorithms/random_shuffle/moveable.cc89
-rw-r--r--libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc38
-rw-r--r--libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc37
4 files changed, 238 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/25_algorithms/random_shuffle/1.cc b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/1.cc
new file mode 100644
index 000000000..cd92398a3
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/1.cc
@@ -0,0 +1,74 @@
+// Copyright (C) 2001, 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/>.
+
+// 25.2.11 random_shuffle()
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+
+bool test __attribute__((unused)) = true;
+
+const int N = 200000;
+int A[N], s1[N];
+
+#if _GLIBCXX_PARALLEL
+#define TAG , __gnu_parallel::sequential_tag()
+#else
+#define TAG
+#endif
+
+void fill_ascending()
+{
+ for (int i = 0; i < N; ++i)
+ A[i] = i;
+}
+
+void
+test01()
+{
+ fill_ascending();
+#if _GLIBCXX_PARALLEL
+ for (int num_threads = 1; num_threads <= 2; ++num_threads)
+ {
+ omp_set_num_threads(num_threads);
+#endif
+ std::copy(A, A + N, s1);
+ VERIFY(std::equal(s1, s1 + N, A TAG));
+
+ std::random_shuffle(s1, s1 + N);
+ // the chance that random_shuffle leaves the order as is by coincidence
+ // is negligible, so we expect it to be permuted
+ VERIFY(!std::equal(s1, s1 + N, A TAG));
+
+ std::sort(s1, s1 + N TAG);
+ VERIFY(std::equal(s1, s1 + N, A TAG));
+#if _GLIBCXX_PARALLEL
+ }
+#endif
+}
+
+int
+main()
+{
+#if _GLIBCXX_PARALLEL
+ __gnu_parallel::_Settings gpms = __gnu_parallel::_Settings::get();
+ gpms.algorithm_strategy = __gnu_parallel::force_parallel;
+ __gnu_parallel::_Settings::set(gpms);
+#endif
+ test01();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/25_algorithms/random_shuffle/moveable.cc b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/moveable.cc
new file mode 100644
index 000000000..cbf170be3
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/moveable.cc
@@ -0,0 +1,89 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2009, 2010 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/>.
+
+// 25.2.11 random_shuffle()
+
+// XXX FIXME: parallel-mode should deal correctly with moveable-only types
+// per C++0x, at minimum smoothly fall back to serial.
+#undef _GLIBCXX_PARALLEL
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <testsuite_iterators.h>
+#include <testsuite_rvalref.h>
+
+using __gnu_test::test_container;
+using __gnu_test::random_access_iterator_wrapper;
+using __gnu_test::rvalstruct;
+
+typedef test_container<rvalstruct, random_access_iterator_wrapper> Container;
+
+const int N = 200000;
+int A[N];
+
+void fill_ascending()
+{
+ for (int i = 0; i < N; ++i)
+ A[i] = i;
+}
+
+void
+test01()
+{
+ bool test __attribute__((unused)) = true;
+
+ fill_ascending();
+ rvalstruct rv[N];
+ std::copy(A, A + N, rv);
+ Container con(rv, rv + N);
+ std::random_shuffle(con.begin(), con.end());
+
+ // The chance that random_shuffle leaves the order as is by coincidence
+ // is negligible, so we expect it to be permuted
+ VERIFY( !std::equal(rv, rv + N, A) );
+
+ std::sort(con.begin(), con.end());
+ VERIFY( std::equal(rv, rv + N, A) );
+}
+
+int random_generator(int)
+{ return 0; }
+
+void
+test02()
+{
+ bool test __attribute__((unused)) = true;
+
+ fill_ascending();
+ rvalstruct rv[10] = {1,2,3,4,5,6,7,8,9,10};
+ int result[10] = {10,1,2,3,4,5,6,7,8,9};
+ Container con(rv, rv + 10);
+ std::random_shuffle(con.begin(), con.end(), random_generator);
+ // The above answer was generated by hand. It is not required by the standard,
+ // but is produced by the current algorithm.
+ VERIFY( std::equal(rv, rv + 10, result) );
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc
new file mode 100644
index 000000000..82fd11d31
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc
@@ -0,0 +1,38 @@
+// { dg-do compile }
+
+// 2007-09-20 Benjamin Kosnik <bkoz@redhat.com>
+
+// Copyright (C) 2007, 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/>.
+
+
+#include <algorithm>
+#include <functional>
+#include <testsuite_api.h>
+
+namespace std
+{
+ using __gnu_test::NonDefaultConstructible;
+
+ typedef NonDefaultConstructible value_type;
+ typedef value_type* iterator_type;
+ typedef std::pointer_to_unary_function<int, int> generator_type;
+
+ template void random_shuffle(iterator_type, iterator_type);
+ template void random_shuffle(iterator_type, iterator_type,
+ generator_type&);
+}
diff --git a/libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc
new file mode 100644
index 000000000..f1b59b38c
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc
@@ -0,0 +1,37 @@
+// { dg-do compile }
+
+// 2007-09-20 Benjamin Kosnik <bkoz@redhat.com>
+
+// Copyright (C) 2007, 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/>.
+
+
+#include <algorithm>
+#include <testsuite_character.h>
+
+namespace std
+{
+ using __gnu_test::pod_int;
+
+ typedef pod_int value_type;
+ typedef value_type* iterator_type;
+ typedef std::pointer_to_unary_function<int, int> generator_type;
+
+ template void random_shuffle(iterator_type, iterator_type);
+ template void random_shuffle(iterator_type, iterator_type,
+ generator_type&);
+}