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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/25_algorithms/merge/constrained.cc
1 // Copyright (C) 2020-2023 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 } }
23 #include <testsuite_hooks.h>
24 #include <testsuite_iterators.h>
26 using __gnu_test::test_container
;
27 using __gnu_test::test_range
;
28 using __gnu_test::input_iterator_wrapper
;
29 using __gnu_test::output_iterator_wrapper
;
31 namespace ranges
= std::ranges
;
36 int x
[] = {1,2,3,4,5};
37 for (int i
= 0; i
<= 5; i
++)
38 for (int j
= 0; j
<= 5; j
++)
41 test_range
<int, input_iterator_wrapper
> rx(x
, x
+i
), ry(x
, x
+j
);
42 test_range
<int, output_iterator_wrapper
> rz(z
, z
+i
+j
);
43 auto [in1
,in2
,out
] = ranges::merge(rx
, ry
, rz
.begin());
44 VERIFY( in1
== rx
.end() );
45 VERIFY( in2
== ry
.end() );
46 VERIFY( out
== rz
.end() );
48 std::vector
<int> v(x
, x
+i
);
49 v
.insert(v
.end(), x
, x
+j
);
52 VERIFY( ranges::equal(v
.begin(), v
.end(), z
, z
+i
+j
) );
62 ranges::merge(x
, x
+3, y
, y
+3, z
,
63 ranges::greater
{}, {}, [] (int a
) { return -a
; });
65 const int w
[6] = {-1, 2, -3, 4, -5, 6};
66 return ranges::equal(w
, z
);
74 static_assert(test02());