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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/25_algorithms/find_end/constexpr.cc
1 // Copyright (C) 2019-2020 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 compile { target c++2a } }
27 constexpr std::array
<int, 12> ca0
{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}};
28 constexpr std::array
<int, 3> cam
{{4, 5, 6}};
29 constexpr std::array
<int, 3> camm
{{-4, -5, -6}};
31 const auto outf
= std::find_end(ca0
.begin(), ca0
.end(),
32 cam
.begin(), cam
.end());
34 const auto outg
= std::find_end(ca0
.begin(), ca0
.end(),
35 camm
.begin(), camm
.end(),
36 [](int i
, int j
){ return i
+ 1 == -j
; });
38 return outf
== (ca0
.begin() + 4) && outg
== (ca0
.begin() + 3);
41 static_assert(test());