Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/algorithms/alg.sorting/alg.min.max/max.pass.cpp

@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<LessThanComparable T>
+//   const T&
+//   max(const T& a, const T& b);
+
+#include <algorithm>
+#include <cassert>
+
+template <class T>
+void
+test(const T& a, const T& b, const T& x)
+{
+    assert(&std::max(a, b) == &x);
+}
+
+int main()
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, x);
+    test(y, x, y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, y);
+    test(y, x, y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, x);
+    test(y, x, x);
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::max(x, y) == x, "" );
+    static_assert(std::max(y, x) == x, "" );
+    }
+#endif
+}

test/std/algorithms/alg.sorting/alg.min.max/max_comp.pass.cpp

@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, StrictWeakOrder<auto, T> Compare>
+//   requires !SameType<T, Compare> && CopyConstructible<Compare>
+//   const T&
+//   max(const T& a, const T& b, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+template <class T, class C>
+void
+test(const T& a, const T& b, C c, const T& x)
+{
+    assert(&std::max(a, b, c) == &x);
+}
+
+int main()
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, std::greater<int>(), y);
+    test(y, x, std::greater<int>(), y);
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::max(x, y, std::greater<int>()) == y, "" );
+    static_assert(std::max(y, x, std::greater<int>()) == y, "" );
+    }
+#endif
+}

test/std/algorithms/alg.sorting/alg.min.max/max_element.pass.cpp

@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   Iter
+//   max_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::max_element(first, last);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!(*i < *j));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::random_shuffle(a, a+N);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+int main()
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+}

test/std/algorithms/alg.sorting/alg.min.max/max_element_comp.pass.cpp

@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   Iter
+//   max_element(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::max_element(first, last, std::greater<int>());
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!std::greater<int>()(*i, *j));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::random_shuffle(a, a+N);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+template <class Iter, class Pred>
+void test_eq0(Iter first, Iter last, Pred p)
+{
+    assert(first == std::max_element(first, last, p));
+}
+
+void test_eq()
+{
+    const size_t N = 10;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 10; // all the same
+    test_eq0(a, a+N, std::less<int>());
+    test_eq0(a, a+N, std::greater<int>());
+    delete [] a;
+}
+
+int main()
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test_eq();
+}

test/std/algorithms/alg.sorting/alg.min.max/max_init_list.pass.cpp

@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class T>
+//   T
+//   max(initializer_list<T> t);
+
+#include <algorithm>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+    int i = std::max({2, 3, 1});
+    assert(i == 3);
+    i = std::max({2, 1, 3});
+    assert(i == 3);
+    i = std::max({3, 1, 2});
+    assert(i == 3);
+    i = std::max({3, 2, 1});
+    assert(i == 3);
+    i = std::max({1, 2, 3});
+    assert(i == 3);
+    i = std::max({1, 3, 2});
+    assert(i == 3);
+#if _LIBCPP_STD_VER > 11
+    {
+    static_assert(std::max({1, 3, 2}) == 3, "");
+    static_assert(std::max({2, 1, 3}) == 3, "");
+    static_assert(std::max({3, 2, 1}) == 3, "");
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+}

test/std/algorithms/alg.sorting/alg.min.max/max_init_list_comp.pass.cpp

@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, class Compare>
+//   T
+//   max(initializer_list<T> t, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+    int i = std::max({2, 3, 1}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({2, 1, 3}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({3, 1, 2}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({3, 2, 1}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({1, 2, 3}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({1, 3, 2}, std::greater<int>());
+    assert(i == 1);
+#if _LIBCPP_STD_VER > 11
+    {
+    static_assert(std::max({1, 3, 2}, std::greater<int>()) == 1, "");
+    static_assert(std::max({2, 1, 3}, std::greater<int>()) == 1, "");
+    static_assert(std::max({3, 2, 1}, std::greater<int>()) == 1, "");
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+}

test/std/algorithms/alg.sorting/alg.min.max/min.pass.cpp

@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<LessThanComparable T>
+//   const T&
+//   min(const T& a, const T& b);
+
+#include <algorithm>
+#include <cassert>
+
+template <class T>
+void
+test(const T& a, const T& b, const T& x)
+{
+    assert(&std::min(a, b) == &x);
+}
+
+int main()
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, x);
+    test(y, x, y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, x);
+    test(y, x, x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, y);
+    test(y, x, y);
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::min(x, y) == y, "" );
+    static_assert(std::min(y, x) == y, "" );
+    }
+#endif
+}

test/std/algorithms/alg.sorting/alg.min.max/min_comp.pass.cpp

@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, StrictWeakOrder<auto, T> Compare>
+//   requires !SameType<T, Compare> && CopyConstructible<Compare>
+//   const T&
+//   min(const T& a, const T& b, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+template <class T, class C>
+void
+test(const T& a, const T& b, C c, const T& x)
+{
+    assert(&std::min(a, b, c) == &x);
+}
+
+int main()
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, std::greater<int>(), y);
+    test(y, x, std::greater<int>(), y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), x);
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::min(x, y, std::greater<int>()) == x, "" );
+    static_assert(std::min(y, x, std::greater<int>()) == x, "" );
+    }
+#endif
+}

test/std/algorithms/alg.sorting/alg.min.max/min_element.pass.cpp

@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   Iter
+//   min_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::min_element(first, last);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!(*j < *i));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::random_shuffle(a, a+N);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+int main()
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+}

test/std/algorithms/alg.sorting/alg.min.max/min_element_comp.pass.cpp

@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   Iter
+//   min_element(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::min_element(first, last, std::greater<int>());
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!std::greater<int>()(*j, *i));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::random_shuffle(a, a+N);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+template <class Iter, class Pred>
+void test_eq0(Iter first, Iter last, Pred p)
+{
+    assert(first == std::min_element(first, last, p));
+}
+
+void test_eq()
+{
+    const size_t N = 10;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 10; // all the same
+    test_eq0(a, a+N, std::less<int>());
+    test_eq0(a, a+N, std::greater<int>());
+    delete [] a;
+}
+
+int main()
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test_eq();
+}

test/std/algorithms/alg.sorting/alg.min.max/min_init_list.pass.cpp

@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T>
+//   T
+//   min(initializer_list<T> t);
+
+#include <algorithm>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+    int i = std::min({2, 3, 1});
+    assert(i == 1);
+    i = std::min({2, 1, 3});
+    assert(i == 1);
+    i = std::min({3, 1, 2});
+    assert(i == 1);
+    i = std::min({3, 2, 1});
+    assert(i == 1);
+    i = std::min({1, 2, 3});
+    assert(i == 1);
+    i = std::min({1, 3, 2});
+    assert(i == 1);
+#if _LIBCPP_STD_VER > 11
+    {
+    static_assert(std::min({1, 3, 2}) == 1, "");
+    static_assert(std::min({2, 1, 3}) == 1, "");
+    static_assert(std::min({3, 2, 1}) == 1, "");
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+}

test/std/algorithms/alg.sorting/alg.min.max/min_init_list_comp.pass.cpp

@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, class Compare>
+//   T
+//   min(initializer_list<T> t, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+    int i = std::min({2, 3, 1}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({2, 1, 3}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({3, 1, 2}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({3, 2, 1}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({1, 2, 3}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({1, 3, 2}, std::greater<int>());
+    assert(i == 3);
+#if _LIBCPP_STD_VER > 11
+    {
+    static_assert(std::min({1, 3, 2}, std::greater<int>()) == 3, "");
+    static_assert(std::min({2, 1, 3}, std::greater<int>()) == 3, "");
+    static_assert(std::min({3, 2, 1}, std::greater<int>()) == 3, "");
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+}

test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp

@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<LessThanComparable T>
+//   pair<const T&, const T&>
+//   minmax(const T& a, const T& b);
+
+#include <algorithm>
+#include <cassert>
+
+template <class T>
+void
+test(const T& a, const T& b, const T& x, const T& y)
+{
+    std::pair<const T&, const T&> p = std::minmax(a, b);
+    assert(&p.first == &x);
+    assert(&p.second == &y);
+}
+
+int main()
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, x, y);
+    test(y, x, y, x);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, x, y);
+    test(y, x, x, y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, y, x);
+    test(y, x, y, x);
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+//  Note that you can't take a reference to a local var, since 
+//  its address is not a compile-time constant.
+    constexpr static int x = 1;
+    constexpr static int y = 0;
+    constexpr auto p1 = std::minmax (x, y);
+    static_assert(p1.first  == y, "");
+    static_assert(p1.second == x, "");
+    constexpr auto p2 = std::minmax (y, x);
+    static_assert(p2.first  == y, "");
+    static_assert(p2.second == x, "");
+    }
+#endif
+}

test/std/algorithms/alg.sorting/alg.min.max/minmax_comp.pass.cpp

@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, StrictWeakOrder<auto, T> Compare>
+//   requires !SameType<T, Compare> && CopyConstructible<Compare>
+//   pair<const T&, const T&>
+//   minmax(const T& a, const T& b, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+template <class T, class C>
+void
+test(const T& a, const T& b, C c, const T& x, const T& y)
+{
+    std::pair<const T&, const T&> p = std::minmax(a, b, c);
+    assert(&p.first == &x);
+    assert(&p.second == &y);
+}
+
+
+int main()
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, std::greater<int>(), x, y);
+    test(y, x, std::greater<int>(), y, x);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, std::greater<int>(), y, x);
+    test(y, x, std::greater<int>(), y, x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, std::greater<int>(), x, y);
+    test(y, x, std::greater<int>(), x, y);
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+//  Note that you can't take a reference to a local var, since 
+//  its address is not a compile-time constant.
+    constexpr static int x = 1;
+    constexpr static int y = 0;
+    constexpr auto p1 = std::minmax(x, y, std::greater<>());
+    static_assert(p1.first  == x, "");
+    static_assert(p1.second == y, "");
+    constexpr auto p2 = std::minmax(y, x, std::greater<>());
+    static_assert(p2.first  == x, "");
+    static_assert(p2.second == y, "");
+    }
+#endif
+}

test/std/algorithms/alg.sorting/alg.min.max/minmax_element.pass.cpp

@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   pair<Iter, Iter>
+//   minmax_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    std::pair<Iter, Iter> p = std::minmax_element(first, last);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+        {
+            assert(!(*j < *p.first));
+            assert(!(*p.second < *j));
+        }
+    }
+    else
+    {
+        assert(p.first == last);
+        assert(p.second == last);
+    }
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::random_shuffle(a, a+N);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+    {
+    const unsigned N = 100;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 5;
+    std::random_shuffle(a, a+N);
+    std::pair<Iter, Iter> p = std::minmax_element(Iter(a), Iter(a+N));
+    assert(base(p.first) == a);
+    assert(base(p.second) == a+N-1);
+    delete [] a;
+    }
+}
+
+int main()
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+}

test/std/algorithms/alg.sorting/alg.min.max/minmax_element_comp.pass.cpp

@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   pair<Iter, Iter>
+//   minmax_element(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    typedef std::greater<int> Compare;
+    Compare comp;
+    std::pair<Iter, Iter> p = std::minmax_element(first, last, comp);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+        {
+            assert(!comp(*j, *p.first));
+            assert(!comp(*p.second, *j));
+        }
+    }
+    else
+    {
+        assert(p.first == last);
+        assert(p.second == last);
+    }
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::random_shuffle(a, a+N);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+    {
+    const unsigned N = 100;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 5;
+    std::random_shuffle(a, a+N);
+    typedef std::greater<int> Compare;
+    Compare comp;
+    std::pair<Iter, Iter> p = std::minmax_element(Iter(a), Iter(a+N), comp);
+    assert(base(p.first) == a);
+    assert(base(p.second) == a+N-1);
+    delete [] a;
+    }
+}
+
+int main()
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+}

test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp

@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T>
+//   pair<T, T>
+//   minmax(initializer_list<T> t);
+
+#include <algorithm>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+    assert((std::minmax({1, 2, 3}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({1, 3, 2}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({2, 1, 3}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({2, 3, 1}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({3, 1, 2}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({3, 2, 1}) == std::pair<int, int>(1, 3)));
+#if _LIBCPP_STD_VER > 11
+    {
+    static_assert((std::minmax({1, 2, 3}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({1, 3, 2}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({2, 1, 3}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({2, 3, 1}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({3, 1, 2}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({3, 2, 1}) == std::pair<int, int>(1, 3)), "");
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+}

test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list_comp.pass.cpp

@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, class Compare>
+//   pair<T, T>
+//   minmax(initializer_list<T> t, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+    assert((std::minmax({1, 2, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({1, 3, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({2, 1, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({2, 3, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({3, 1, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({3, 2, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+#if _LIBCPP_STD_VER > 11
+    {
+    static_assert((std::minmax({1, 2, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({1, 3, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({2, 1, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({2, 3, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({3, 1, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({3, 2, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+}