| // Copyright (C) 2020-2021 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/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| |
| #include <algorithm> |
| #include <testsuite_hooks.h> |
| #include <testsuite_iterators.h> |
| |
| using __gnu_test::test_container; |
| using __gnu_test::test_range; |
| using __gnu_test::forward_iterator_wrapper; |
| |
| namespace ranges = std::ranges; |
| |
| void |
| test01() |
| { |
| float x[] = {1, 2, 3, 4, 5, 5, 6, 7}; |
| test_container<float, forward_iterator_wrapper> cx(x); |
| for (int i = 0; i < 7; i++) |
| { |
| VERIFY( ranges::binary_search(cx, i, {}, [] (int a) { return a-1; }) ); |
| VERIFY( !ranges::binary_search(cx.begin(), cx.end(), i+0.5) ); |
| } |
| VERIFY( !ranges::binary_search(cx, 0) ); |
| |
| ranges::reverse(x); |
| test_range<float, forward_iterator_wrapper> rx(x); |
| VERIFY( ranges::binary_search(rx, 5, ranges::greater{}) ); |
| } |
| |
| constexpr bool |
| test02() |
| { |
| int x[] = {1, 2, 3}; |
| return (ranges::binary_search(x, 3) |
| && !ranges::binary_search(x, x, 3)); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| static_assert(test02()); |
| } |