31cbe0f240
C++98 and C++03 are effectively aliases as far as Clang is concerned. As such, allowing both std=c++98 and std=c++03 as Lit parameters is just slightly confusing, but provides no value. It's similar to allowing both std=c++17 and std=c++1z, which we don't do. This was discovered because we had an internal bot that ran the test suite under both c++98 AND c++03 -- one of which is redundant. Differential Revision: https://reviews.llvm.org/D80926
64 lines
1.7 KiB
C++
64 lines
1.7 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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// REQUIRES: c++03 || c++11 || c++14
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// template<RandomAccessIterator Iter>
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// requires ShuffleIterator<Iter>
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// void
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// random_shuffle(Iter first, Iter last);
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#define _LIBCPP_DISABLE_DEPRECATION_WARNINGS
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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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void
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test_with_iterator()
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{
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int empty[] = {};
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std::random_shuffle(Iter(empty), Iter(empty));
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const int all_elements[] = {1, 2, 3, 4};
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int shuffled[] = {1, 2, 3, 4};
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const unsigned size = sizeof(all_elements)/sizeof(all_elements[0]);
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std::random_shuffle(Iter(shuffled), Iter(shuffled+size));
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assert(std::is_permutation(shuffled, shuffled+size, all_elements));
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std::random_shuffle(Iter(shuffled), Iter(shuffled+size));
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assert(std::is_permutation(shuffled, shuffled+size, all_elements));
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}
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int main(int, char**)
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{
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int ia[] = {1, 2, 3, 4};
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int ia1[] = {1, 4, 3, 2};
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int ia2[] = {4, 1, 2, 3};
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const unsigned sa = sizeof(ia)/sizeof(ia[0]);
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std::random_shuffle(ia, ia+sa);
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LIBCPP_ASSERT(std::equal(ia, ia+sa, ia1));
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assert(std::is_permutation(ia, ia+sa, ia1));
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std::random_shuffle(ia, ia+sa);
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LIBCPP_ASSERT(std::equal(ia, ia+sa, ia2));
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assert(std::is_permutation(ia, ia+sa, ia2));
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test_with_iterator<random_access_iterator<int*> >();
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test_with_iterator<int*>();
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return 0;
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}
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