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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.
//
//===----------------------------------------------------------------------===//
// <iterator>
// class istream_iterator
// template <class T, class charT, class traits, class Distance>
// bool operator==(const istream_iterator<T,charT,traits,Distance> &x,
// const istream_iterator<T,charT,traits,Distance> &y);
//
// template <class T, class charT, class traits, class Distance>
// bool operator!=(const istream_iterator<T,charT,traits,Distance> &x,
// const istream_iterator<T,charT,traits,Distance> &y);
#include <iterator>
#include <sstream>
#include <cassert>
int main()
{
std::istringstream inf1(" 1 23");
std::istringstream inf2(" 1 23");
std::istream_iterator<int> i1(inf1);
std::istream_iterator<int> i2(inf1);
std::istream_iterator<int> i3(inf2);
std::istream_iterator<int> i4;
std::istream_iterator<int> i5;
assert(i1 == i1);
assert(i1 == i2);
assert(i1 != i3);
assert(i1 != i4);
assert(i1 != i5);
assert(i2 == i2);
assert(i2 != i3);
assert(i2 != i4);
assert(i2 != i5);
assert(i3 == i3);
assert(i3 != i4);
assert(i3 != i5);
assert(i4 == i4);
assert(i4 == i5);
}
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