4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
70 lines
2 KiB
C++
70 lines
2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <algorithm>
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// template<ForwardIterator Iter, class T, CopyConstructible Compare>
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// requires Predicate<Compare, T, Iter::value_type>
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// && Predicate<Compare, Iter::value_type, T>
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// pair<Iter, Iter>
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// equal_range(Iter first, Iter last, const T& value, Compare comp);
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#include <algorithm>
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#include <functional>
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#include <vector>
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#include <cassert>
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#include "test_iterators.h"
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template <class Iter, class T>
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void
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test(Iter first, Iter last, const T& value)
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{
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std::pair<Iter, Iter> i = std::equal_range(first, last, value, std::greater<int>());
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for (Iter j = first; j != i.first; ++j)
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assert(std::greater<int>()(*j, value));
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for (Iter j = i.first; j != last; ++j)
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assert(!std::greater<int>()(*j, value));
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for (Iter j = first; j != i.second; ++j)
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assert(!std::greater<int>()(value, *j));
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for (Iter j = i.second; j != last; ++j)
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assert(std::greater<int>()(value, *j));
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}
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template <class Iter>
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void
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test()
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{
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const unsigned N = 1000;
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const unsigned M = 10;
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std::vector<int> v(N);
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int x = 0;
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for (int i = 0; i < v.size(); ++i)
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{
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v[i] = x;
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if (++x == M)
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x = 0;
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}
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std::sort(v.begin(), v.end(), std::greater<int>());
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for (x = 0; x <= M; ++x)
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test(Iter(v.data()), Iter(v.data()+v.size()), x);
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}
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int main()
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{
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int d[] = {3, 2, 1, 0};
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for (int* e = d; e <= d+4; ++e)
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for (int x = -1; x <= 4; ++x)
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test(d, e, x);
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test<forward_iterator<const int*> >();
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test<bidirectional_iterator<const int*> >();
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test<random_access_iterator<const int*> >();
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test<const int*>();
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}
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