33 …t HasCopyBackwardIt = requires(In in, Sent sent, Out out) { std::ranges::copy_backward(in, sent, o…
46 concept HasCopyBackwardR = requires(Range range, Out out) { std::ranges::copy_backward(range, out);…
64       std::array<int, 4> out;  in test_iterators()  local
66 …anges::copy_backward(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data() + out.size()));  in test_iterators()
67       assert(in == out);  in test_iterators()
69       assert(base(ret.out) == out.data());  in test_iterators()
73       std::array<int, 4> out;  in test_iterators()  local
76           std::ranges::copy_backward(range, Out(out.data() + out.size()));  in test_iterators()
77       assert(in == out);  in test_iterators()
79       assert(base(ret.out) == out.data());  in test_iterators()
86       std::array<int, 0> out;  in test_iterators()  local
88 …anges::copy_backward(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data() + out.size()));  in test_iterators()
90       assert(base(ret.out) == out.data());  in test_iterators()
94       std::array<int, 0> out;  in test_iterators()  local
96       auto ret = std::ranges::copy_backward(range, Out(out.data()));  in test_iterators()
98       assert(base(ret.out) == out.data());  in test_iterators()
134     std::array<int, 4> out;  in test()  local
136       std::ranges::copy_backward(std::array {1, 2, 3, 4}, out.data() + out.size());  in test()
137     assert(ret.out == out.data());  in test()
138     assert((out == std::array{1, 2, 3, 4}));  in test()
143     std::array<int, 4> out;  in test()  local
145         std::ranges::copy_backward(std::views::all(in), out.data() + out.size());  in test()
147     assert(ret.out == out.data());  in test()
148     assert(in == out);  in test()
164       std::array<CopyOnce, 4> out {};  in test()  local
165       auto ret = std::ranges::copy_backward(in.begin(), in.end(), out.end());  in test()
167       assert(ret.out == out.begin());  in test()
168       assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));  in test()
172       std::array<CopyOnce, 4> out {};  in test()  local
173       auto ret = std::ranges::copy_backward(in, out.end());  in test()
175       assert(ret.out == out.begin());  in test()
176       assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));  in test()
194       std::array<OnlyBackwardsCopyable, 3> out {};  in test()  local
195       out[1].next = &out[0];  in test()
196       out[2].next = &out[1];  in test()
197       out[2].canCopy = true;  in test()
198       auto ret = std::ranges::copy_backward(in, out.end());  in test()
200       assert(ret.out == out.begin());  in test()
201       assert(out[0].canCopy);  in test()
202       assert(out[1].canCopy);  in test()
203       assert(out[2].canCopy);  in test()
207       std::array<OnlyBackwardsCopyable, 3> out {};  in test()  local
208       out[1].next = &out[0];  in test()
209       out[2].next = &out[1];  in test()
210       out[2].canCopy = true;  in test()
211       auto ret = std::ranges::copy_backward(in.begin(), in.end(), out.end());  in test()
213       assert(ret.out == out.begin());  in test()
214       assert(out[0].canCopy);  in test()
215       assert(out[1].canCopy);  in test()
216       assert(out[2].canCopy);  in test()