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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/25_algorithms/max/constrained.cc
1 // Copyright (C) 2020-2021 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do run { target c++2a } }
22 #include <testsuite_hooks.h>
23 #include <testsuite_iterators.h>
25 using __gnu_test::test_container
;
26 using __gnu_test::test_range
;
27 using __gnu_test::input_iterator_wrapper
;
29 namespace ranges
= std::ranges
;
39 VERIFY( ranges::max(1, 2) == 2);
40 VERIFY( ranges::max(2, 1) == 2);
41 VERIFY( ranges::max(1, 2, ranges::greater
{}) == 1);
42 VERIFY( ranges::max(1, 2, ranges::greater
{}, std::negate
<>{}) == 2);
43 VERIFY( ranges::max(1, 2, {}, std::negate
<>{}) == 1);
44 VERIFY( ranges::max(X
{1,2}, X
{1,3}, {}, &X::i
).j
== 2 );
53 test_range
<int, input_iterator_wrapper
> cx(x
);
54 VERIFY( ranges::max(cx
) == 4 );
56 VERIFY( ranges::max(cx
, ranges::greater
{}) == 1 );
58 VERIFY( ranges::max(cx
, {}, std::negate
<>{}) == 1);
60 VERIFY( ranges::max(cx
, ranges::greater
{}, std::negate
<>{}) == 4 );
61 } while (ranges::next_permutation(x
).found
);
63 constexpr X y
[] = {{0,5},{1,2},{1,3}};
64 static_assert(ranges::max(y
, {}, &X::i
).j
== 2);
70 VERIFY( ranges::max({2,3,1,4}) == 4 );
71 VERIFY( ranges::max({2,3,1,4}, ranges::greater
{}) == 1 );
72 VERIFY( ranges::max({2,3,1,4}, {}, std::negate
<>{}) == 1 );
73 VERIFY( ranges::max({2,3,1,4}, ranges::greater
{}, std::negate
<>{}) == 4 );