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f851db3dae
After this patch, the only parts of P0879 that remain missing will be std::nth_element, std::sort, and the heap/partial_sort algorithms. Differential Revision: https://reviews.llvm.org/D93443
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <algorithm>
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// template<BidirectionalIterator Iter>
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// requires HasSwap<Iter::reference, Iter::reference>
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// constexpr void // constexpr in C++20
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// reverse(Iter first, Iter last);
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#include <algorithm>
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#include <cassert>
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#include "test_macros.h"
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#include "test_iterators.h"
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template <class Iter>
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TEST_CONSTEXPR_CXX20 bool
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test()
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{
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int ia[] = {0};
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const unsigned sa = sizeof(ia)/sizeof(ia[0]);
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std::reverse(Iter(ia), Iter(ia));
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assert(ia[0] == 0);
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std::reverse(Iter(ia), Iter(ia+sa));
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assert(ia[0] == 0);
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int ib[] = {0, 1};
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const unsigned sb = sizeof(ib)/sizeof(ib[0]);
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std::reverse(Iter(ib), Iter(ib+sb));
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assert(ib[0] == 1);
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assert(ib[1] == 0);
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int ic[] = {0, 1, 2};
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const unsigned sc = sizeof(ic)/sizeof(ic[0]);
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std::reverse(Iter(ic), Iter(ic+sc));
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assert(ic[0] == 2);
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assert(ic[1] == 1);
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assert(ic[2] == 0);
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int id[] = {0, 1, 2, 3};
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const unsigned sd = sizeof(id)/sizeof(id[0]);
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std::reverse(Iter(id), Iter(id+sd));
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assert(id[0] == 3);
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assert(id[1] == 2);
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assert(id[2] == 1);
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assert(id[3] == 0);
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return true;
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}
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int main(int, char**)
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{
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test<bidirectional_iterator<int*> >();
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test<random_access_iterator<int*> >();
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test<int*>();
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#if TEST_STD_VER >= 20
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static_assert(test<bidirectional_iterator<int*>>());
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static_assert(test<random_access_iterator<int*>>());
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static_assert(test<int*>());
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#endif
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return 0;
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}
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