| // 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::input_iterator_wrapper; |
| using __gnu_test::forward_iterator_wrapper; |
| |
| namespace ranges = std::ranges; |
| |
| void |
| test01() |
| { |
| int x[] = {1, 2, 3, 4, 5}; |
| char y[] = {1, 2, 3, 5}; |
| long z[] = {1, 2, 3, 4, 5, 6}; |
| |
| { |
| test_range<int, input_iterator_wrapper> rx(x); |
| test_range<char, input_iterator_wrapper> ry(y); |
| test_range<long, input_iterator_wrapper> rz(z); |
| |
| VERIFY( ranges::lexicographical_compare(rx, ry) ); |
| rx.bounds.first = x; |
| ry.bounds.first = y; |
| VERIFY( !ranges::lexicographical_compare(ry, rx) ); |
| } |
| |
| test_range<int, forward_iterator_wrapper> rx(x); |
| test_range<char, forward_iterator_wrapper> ry(y); |
| test_range<long, forward_iterator_wrapper> rz(z); |
| |
| VERIFY( ranges::lexicographical_compare(rx, rz) ); |
| VERIFY( !ranges::lexicographical_compare(rz, rx) ); |
| |
| VERIFY( !ranges::lexicographical_compare(rx, rx) ); |
| VERIFY( ranges::lexicographical_compare(rx, rx, {}, std::negate<>{}) ); |
| VERIFY( ranges::lexicographical_compare(rx, rx, std::greater{}, |
| {}, std::negate<>{}) ); |
| |
| VERIFY( !ranges::lexicographical_compare(rx, ry, {}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| VERIFY( ranges::lexicographical_compare(ry, rx, {}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| |
| VERIFY( ranges::lexicographical_compare(rx, rz, ranges::greater{}) ); |
| VERIFY( !ranges::lexicographical_compare(rz, rx, ranges::greater{}) ); |
| |
| VERIFY( ranges::lexicographical_compare(rx, ry, ranges::greater{}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| VERIFY( !ranges::lexicographical_compare(ry, rx, ranges::greater{}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| } |
| |
| void |
| test02() |
| { |
| int x[] = {1, 2, 3, 4, 5}; |
| int y[] = {1, 2, 3, 5}; |
| int z[] = {1, 2, 3, 4, 5, 6}; |
| |
| VERIFY( ranges::lexicographical_compare(x, y) ); |
| VERIFY( !ranges::lexicographical_compare(y, x) ); |
| |
| VERIFY( ranges::lexicographical_compare(x, z) ); |
| VERIFY( !ranges::lexicographical_compare(z, x) ); |
| |
| VERIFY( !ranges::lexicographical_compare(x, x) ); |
| |
| VERIFY( !ranges::lexicographical_compare(x, y, {}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| VERIFY( ranges::lexicographical_compare(y, x, {}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| |
| VERIFY( ranges::lexicographical_compare(x, z, ranges::greater{}) ); |
| VERIFY( !ranges::lexicographical_compare(z, x, ranges::greater{}) ); |
| |
| VERIFY( ranges::lexicographical_compare(x, y, ranges::greater{}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| VERIFY( !ranges::lexicographical_compare(y, x, ranges::greater{}, |
| std::negate<>{}, |
| std::negate<>{}) ); |
| } |
| |
| void |
| test03() |
| { |
| int x[] = {1, 2, 3, 4, 5}; |
| int y[] = {1, 2, 5, 3}; |
| int z[] = {1, 2, 3, 5}; |
| |
| do |
| { |
| VERIFY( ranges::lexicographical_compare(x, y) ); |
| VERIFY( !ranges::lexicographical_compare(x, y, ranges::greater{}) ); |
| VERIFY( !ranges::lexicographical_compare(y, x) ); |
| VERIFY( ranges::lexicographical_compare(y, x, ranges::greater{}) ); |
| |
| test_container<int, forward_iterator_wrapper> cy(y); |
| VERIFY( ranges::lexicographical_compare(x, cy) ); |
| VERIFY( !ranges::lexicographical_compare(x, cy, ranges::greater{}) ); |
| VERIFY( !ranges::lexicographical_compare(cy, x) ); |
| VERIFY( ranges::lexicographical_compare(cy, x, ranges::greater{}) ); |
| |
| test_container<int, forward_iterator_wrapper> cz(z); |
| VERIFY( ranges::lexicographical_compare(cz.begin(), cz.end(), |
| cy.begin(), cy.end()) ); |
| VERIFY( !ranges::lexicographical_compare(cy.begin(), cy.end(), |
| cz.begin(), cz.end()) ); |
| |
| std::vector<int> vx(x, x+5), vy(y, y+4); |
| VERIFY( ranges::lexicographical_compare(vx, vy) ); |
| VERIFY( !ranges::lexicographical_compare(vx, vy, ranges::greater{}) ); |
| VERIFY( !ranges::lexicographical_compare(vy, vx) ); |
| VERIFY( ranges::lexicographical_compare(vy, vx, ranges::greater{}) ); |
| } while (ranges::next_permutation(y).found); |
| } |
| |
| constexpr bool |
| test04() |
| { |
| int x[] = {1}; |
| int y[] = {1}; |
| return (ranges::lexicographical_compare((int[]){1,2,3,5}, |
| (int[]){1,2,4}) |
| && !ranges::lexicographical_compare(x, x, y, y)); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| static_assert(test04()); |
| } |