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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <numeric>
// template <InputIterator InIter,
// OutputIterator<auto, const InIter::value_type&> OutIter>
// requires HasMinus<InIter::value_type, InIter::value_type>
// && Constructible<InIter::value_type, InIter::reference>
// && OutputIterator<OutIter,
// HasMinus<InIter::value_type, InIter::value_type>::result_type>
// && MoveAssignable<InIter::value_type>
// OutIter
// adjacent_difference(InIter first, InIter last, OutIter result);
#include <numeric>
#include <cassert>
#include "../iterators.h"
template <class InIter, class OutIter>
void
test()
{
int ia[] = {15, 10, 6, 3, 1};
int ir[] = {15, -5, -4, -3, -2};
const unsigned s = sizeof(ia) / sizeof(ia[0]);
int ib[s] = {0};
OutIter r = std::adjacent_difference(InIter(ia), InIter(ia+s), OutIter(ib));
assert(base(r) == ib + s);
for (unsigned i = 0; i < s; ++i)
assert(ib[i] == ir[i]);
}
int main()
{
test<input_iterator<const int*>, output_iterator<int*> >();
test<input_iterator<const int*>, forward_iterator<int*> >();
test<input_iterator<const int*>, bidirectional_iterator<int*> >();
test<input_iterator<const int*>, random_access_iterator<int*> >();
test<input_iterator<const int*>, int*>();
test<forward_iterator<const int*>, output_iterator<int*> >();
test<forward_iterator<const int*>, forward_iterator<int*> >();
test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
test<forward_iterator<const int*>, random_access_iterator<int*> >();
test<forward_iterator<const int*>, int*>();
test<bidirectional_iterator<const int*>, output_iterator<int*> >();
test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
test<bidirectional_iterator<const int*>, int*>();
test<random_access_iterator<const int*>, output_iterator<int*> >();
test<random_access_iterator<const int*>, forward_iterator<int*> >();
test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
test<random_access_iterator<const int*>, random_access_iterator<int*> >();
test<random_access_iterator<const int*>, int*>();
test<const int*, output_iterator<int*> >();
test<const int*, forward_iterator<int*> >();
test<const int*, bidirectional_iterator<int*> >();
test<const int*, random_access_iterator<int*> >();
test<const int*, int*>();
}
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