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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
// requires CopyConstructible<Pred>
// Iter::difference_type
// count_if(Iter first, Iter last, Pred pred);
#include <algorithm>
#include <functional>
#include <cassert>
#include "test_iterators.h"
struct eq {
eq (int val) : v(val) {}
bool operator () (int v2) const { return v == v2; }
int v;
};
int main()
{
int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::count_if(input_iterator<const int*>(ia),
input_iterator<const int*>(ia + sa),
eq(2)) == 3);
assert(std::count_if(input_iterator<const int*>(ia),
input_iterator<const int*>(ia + sa),
eq(7)) == 0);
assert(std::count_if(input_iterator<const int*>(ia),
input_iterator<const int*>(ia),
eq(2)) == 0);
}
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