| // Copyright (C) 2020-2023 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> |
| #include <list> |
| |
| using __gnu_test::test_container; |
| using __gnu_test::test_range; |
| using __gnu_test::input_iterator_wrapper; |
| using __gnu_test::output_iterator_wrapper; |
| using __gnu_test::forward_iterator_wrapper; |
| |
| namespace ranges = std::ranges; |
| |
| struct X |
| { |
| int i; |
| }; |
| |
| void |
| test01() |
| { |
| const int c[6] = { 17, 17, 17, 4, 5, 6 }; |
| { |
| X x[6] = { {1}, {2}, {3}, {4}, {5}, {6} }; |
| VERIFY( ranges::fill_n(x, 3, X{17}) == x+3 ); |
| VERIFY( ranges::equal(x, c, {}, &X::i) ); |
| } |
| |
| { |
| char x[6]; |
| VERIFY( ranges::fill_n(x, 3, 17) == x+3 ); |
| VERIFY( ranges::equal(x, x+3, c, c+3) ); |
| } |
| |
| { |
| X x[6] = { 1, 2, 3, 4, 5, 6 }; |
| test_container<X, forward_iterator_wrapper> cx(x); |
| VERIFY( ranges::fill_n(cx.begin(), 3, X{17})->i == 4 ); |
| VERIFY( ranges::equal(cx, c, {}, &X::i) ); |
| } |
| |
| { |
| int x[6] = { 1, 2, 3, 4, 5, 6 };; |
| test_range<int, output_iterator_wrapper> rx(x); |
| ranges::fill_n(ranges::begin(rx), 3, 17); |
| VERIFY( ranges::equal(x, c) ); |
| } |
| |
| { |
| std::list<int> list({1, 2, 3, 4, 5, 6}); |
| ranges::fill_n(list.begin(), 3, 17); |
| VERIFY( ranges::equal(list, c) ); |
| } |
| } |
| |
| template<typename T> |
| constexpr bool |
| test02() |
| { |
| bool ok = true; |
| T x[6] = { 1, 2, 3, 4, 5, 6 }; |
| const int y[6] = { 1, 2, 3, 4, 5, 6 }; |
| const int z[6] = { 17, 17, 17, 4, 5, 6 }; |
| |
| ranges::fill_n(x, 0, 17); |
| ranges::fill_n(x, -1, 17); |
| ok &= ranges::equal(x, y); |
| |
| ranges::fill_n(x, 3, 17); |
| ok &= ranges::equal(x, z); |
| return ok; |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| static_assert(test02<int>()); |
| static_assert(test02<unsigned char>()); // PR libstdc++/101608 |
| } |