66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
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//===----------------------------------------------------------------------===//
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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, Predicate<auto, T, Iter::value_type> Compare>
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// requires CopyConstructible<Compare>
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// Iter
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// upper_bound(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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Iter i = std::upper_bound(first, last, value, std::greater<int>());
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for (Iter j = first; j != i; ++j)
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assert(!std::greater<int>()(value, *j));
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for (Iter j = i; 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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